Planning, Design, Permitting and Construction – Managed From Start to Finish
We evaluate the property, available space, access, setbacks, utilities and site constraints before recommending a project direction.
We coordinate the design, structural requirements and technical documentation needed to move the ADU toward approval.
We help organize permit documents, agency coordination, pricing and pre-construction details before work begins.
Our construction team manages the build with attention to scheduling, coordination, workmanship and the approved project scope.
An ADU is not just a set of plans. Its success depends on the property, utilities, access, engineering, city requirements and construction budget working together. Our planning-first process helps identify these issues before homeowners commit substantial money to the wrong design.
Detached Maximum Size: Up to 1,200 sq ft under Anaheim's current local ordinance; an 800 sq ft state-protected pathway also applies.
Maximum Height: Anaheim's table allows detached ADUs up to 18 ft plus 2 ft for roof pitch, or the height of the main dwelling, whichever is greater; attached height follows the underlying zone and state protections.
Parking: No space for a studio or JADU; one space for an ADU with one or more bedrooms unless a statutory exemption applies.
Maximum Units: Qualifying single-family property: primary dwelling plus a conversion ADU, new-construction ADU, and one JADU, with no more than four total dwellings; multifamily allowances are broader.
| Rule | City Requirement |
|---|---|
| ADUs Generally Allowed | Generally allowed on qualifying properties in areas that permit single-family or multifamily residential use. |
| Maximum Attached ADU Size | Generally 50% of the primary dwelling or 1,200 sq ft, whichever is less, with protected 850/1,000 sq ft minimum allowances. |
| Maximum JADU Size | Up to 500 sq ft within qualifying single-family space or attached to a newly constructed detached ADU. |
| Side Setback | Generally 4 ft for qualifying new attached and detached ADUs; conversions and same-footprint replacements may be treated differently. |
| Rear Setback | Generally 4 ft for qualifying new attached and detached ADUs; conversions and same-footprint replacements may be treated differently. |
| Front Setback | Underlying-zone standards generally apply, and a detached ADU is usually placed behind the front-most wall of the primary home; the City may modify the standard if needed to allow a qualifying 800 sq ft unit. |
| Owner-Occupancy Requirement | Not required for a regular ADU. A JADU requires owner occupancy only when it shares sanitation with the primary residence, subject to statutory exceptions. |
| Permit Review | Ministerial review; written completeness determination within 15 business days and generally a 60-day decision period after a complete qualifying application. |
| Pre-Approved Plans | Four free detached plans from 224 to 1,199 sq ft; ADU Express is available only on eligible single-family properties. |
Team All Star Construction ADU Builder helps Anaheim homeowners move from early property research into a practical ADU construction plan. Our work may include property feasibility review, ADU type selection, preliminary cost planning, design coordination, permit coordination, pre-construction planning, and construction for qualified projects.
We can help evaluate detached ADUs, garage conversions, attached ADUs, JADUs, over-garage or second-story concepts, pre-approved plan options, and qualifying multifamily ADU combinations. The right approach depends on the legal dwelling count, property layout, existing structures, parking and access, utility capacity, fire conditions, historic status, homeowner goals, and budget.
Working with an ADU builder early can help identify issues that are easy to miss on established Anaheim properties, including older garage foundations, alley or driveway access, a required ten-foot building separation for certain larger detached units, electrical meter and panel work, sewer-lateral routing, historic-property requirements, east Anaheim fire-hazard conditions, slope and retaining-wall work, and construction staging around occupied homes or apartments.
Team All Star Construction ADU Builder is operated by Team All Star Construction, CSLB #1009760. Final feasibility, design, pricing, permit approval, and construction timelines depend on the property, City review, utilities, engineering, fire requirements, site conditions, selected finishes, and final construction documents.
Everything you need to know before spending thousands on plans or permits.
Most homeowners spend hundreds or even thousands on planning before knowing what can actually be built. Our Professional ADU Feasibility Report helps you understand your property’s potential before making that investment.
ADUs are generally allowed on qualifying Anaheim properties in areas that permit single-family or multifamily residential use. Anaheim recognizes detached ADUs, attached ADUs, conversions of existing space, junior ADUs, and broader combinations on qualifying multifamily properties.
A detached ADU may be as large as 1,200 square feet under Anaheim’s current ordinance. An attached ADU is generally limited to 50% of the primary dwelling or 1,200 square feet, whichever is less, while state law protects minimum allowances of 850 square feet for a studio or one-bedroom unit and 1,000 square feet for a unit with two or more bedrooms. A JADU may be up to 500 square feet.
Actual feasibility depends on the legal dwelling count, lot configuration, front placement, four-foot side and rear setbacks, building separation, parking exemptions, utilities, fire access, historic status, slopes, easements, existing structures, and construction access. Anaheim also offers four free pre-approved detached plans and an ADU Express program for eligible single-family properties, but every project still requires site-specific review.
Anaheim adopted Ordinance No. 6620 on January 13, 2026. The current code allows qualifying single-family combinations that may include an existing-space conversion ADU, a new-construction ADU, and one JADU, with no more than four total dwelling units including the primary residence. Qualifying lots with an existing multifamily dwelling may include up to eight detached ADUs, not exceeding the existing primary-unit count.
The City also offers four free pre-approved detached plans and the ADU Express program for eligible single-family properties. ADU Express is not available for every parcel or every project type, so applicants should use the City’s eligibility tool and compare the accelerated process with a custom standard submittal.
Anaheim stretches from established west and central neighborhoods to the Anaheim Colony historic area, major multifamily and mixed-use corridors, resort and specific-plan districts, and hillside communities in east Anaheim. This range creates many ADU opportunities, but it also means that one citywide summary cannot establish the buildable area for every parcel.
The City’s Property Info tool can identify zoning, general-plan designation, parcel size, entitlements, and recent building permits. Applicants should also check historic status, fire-hazard mapping, specific-plan conditions, legal dwelling count, easements, utility routes, and ADU Express eligibility before design begins.
Common Anaheim properties include postwar single-family tract homes, older homes and detached garages near downtown, alley-access lots, duplexes and small apartment properties, larger multifamily sites, townhomes, and hillside or custom homes in east Anaheim. Many established lots have additions, patios, pools, rear garages, narrow side yards, overhead or underground utilities, and records that should be compared with existing conditions.
Garage slabs, foundations, framing, sewer laterals, electrical panels, driveway widths, and the legal number of dwellings should be verified rather than assumed. A property that appears spacious on an aerial image may have easements, required access, historic conditions, or utility routes that reduce the practical ADU area.
Common opportunities include a detached backyard ADU, conversion of an attached or detached garage, an attached addition, a JADU, an over-garage or second-story concept, or a pre-approved detached plan. The City’s four free plan options range from a 224-square-foot studio to a 1,199-square-foot three-bedroom unit.
Qualifying single-family properties may support more than one accessory-unit pathway, while multifamily properties may support conversions of non-livable space and detached ADUs. The most productive configuration depends on the legal unit count, tenant conditions, parking and circulation, utility capacity, fire access, privacy, construction staging, and long-term use.
Common constraints include narrow side-yard or driveway access, existing garages near property lines, pools and patios, a ten-foot separation requirement for certain larger detached units, easements, mature trees, sewer-lateral location, electrical-service capacity, street or alley staging, and unpermitted alterations.
East Anaheim and Anaheim Hills properties may add slope, retaining-wall, drainage, fire-hazard, access, and geotechnical considerations. Historic properties and Mills Act sites can require specific exterior design treatment. Multifamily projects also need careful planning for tenant access, fire separation, utility allocation, parking loss, and work around occupied buildings.
Anaheim applies objective design standards to ADUs. Attached ADUs and JADUs are expected to use materials, colors, roof form, and architectural details consistent with the primary dwelling. Exterior stairs, doors, windows, and upper-level openings should be arranged to reduce visibility and privacy impacts where feasible.
Driveways and walkways are limited within required street setbacks, and emergency access must remain available. A property in the Anaheim Colony or another historic district, listed on a historic register, or under a Mills Act contract requires additional design attention before exterior work is finalized.
Much of central and west Anaheim is relatively flat, but east Anaheim includes sloped and hillside properties where grading, retaining walls, drainage, soil conditions, foundation design, access, and fire requirements can materially affect feasibility and cost. A survey, topographic information, soils report, or geotechnical engineering may be required based on the site and structural scope.
Even on flatter parcels, the ADU must be set at workable elevations with positive drainage. Existing patios, driveways, property-line walls, low points, and runoff toward neighboring property should be reviewed before the foundation plan is completed.
Anaheim’s fire-hazard zones are concentrated particularly in east Anaheim and are classified as moderate, high, or very high based on terrain, fire history, and other hazard factors. The parcel should be checked against current City and CAL FIRE mapping rather than assuming all Anaheim properties have the same fire requirements.
The local ADU code requires adequate emergency access and allows fire sprinklers to remain unnecessary when they are not required for the primary residence, unless an alternative means or method is needed to address fire-department access or water-supply conditions. Final requirements depend on the address, building configuration, access, and applicable codes.
Anaheim has designated historic districts and historic properties, including areas within the Anaheim Colony, Five Points, Historic Palm, and Hoskins districts, along with Mills Act properties and other citywide historic resources. The City’s ADU code applies additional objective standards to lots containing a building listed in the National or California registers or under a Mills Act contract.
Historic-property standards may affect materials, roof form, windows, additions, building width, and garage-conversion treatment. A street-facing garage conversion on an affected historic property may need to retain the appearance of the garage door and driveway. Confirm the property’s status through the City’s historic preservation resources before altering an older structure.
Anaheim homeowners may consider an ADU for aging parents, adult children, multigenerational living, long-term rental housing, guest space, or a flexible independent suite. Owners of qualifying multifamily properties may consider ADUs as additional long-term housing created through conversions or detached construction.
The best unit is not always the largest option. A smaller design may preserve yard area, parking circulation, privacy, tenant access, historic character, or construction access while reducing utility and structural work.
Anaheim ADUs are governed by Anaheim Municipal Code section 18.38.015, the residential parking provisions in section 18.42.030, California Government Code sections 66310 through 66342, and the current building, fire, energy, utility, and public-works requirements. The applicable standards depend on whether the project is a detached or attached new unit, conversion, JADU, pre-approved plan, ADU Express project, or multifamily ADU.
A detached 1,200-square-foot maximum or a four-foot setback should not be treated as a complete feasibility determination. Front placement, building separation, lot coverage for larger units, utilities, fire access, historic conditions, easements, and existing structures remain property-specific.
Anaheim allows a detached ADU up to 1,200 square feet, subject to the local development standards that lawfully apply. A separate state-protected pathway preserves the ability to create a qualifying detached ADU of up to 800 square feet with four-foot side and rear setbacks and the applicable protected height.
The City’s table generally places a detached ADU behind the front-most building wall of the primary residence, although a modified front standard may be allowed when necessary to create a qualifying 800-square-foot unit. Larger detached units are subject to underlying-zone lot-coverage standards and may require ten feet of separation from the primary dwelling.
An attached Anaheim ADU is generally limited to 50% of the primary dwelling’s floor area or 1,200 square feet, whichever is less. That limitation cannot reduce the protected ability to create at least 850 square feet for a studio or one-bedroom unit or 1,000 square feet for a unit with two or more bedrooms when the state-law conditions are met.
Attached projects must coordinate the addition with the existing structure, roof, setbacks, egress, fire separation, utilities, energy compliance, and objective design standards. The City’s code applies the underlying-zone height standard, while current state law also protects qualifying attached ADUs up to the applicable statutory limit.
A JADU may be up to 500 square feet. Anaheim allows it within the walls of an existing or proposed single-family dwelling or attached to a newly constructed detached ADU, subject to the selected pathway and building requirements. A JADU needs an independent exterior entrance and an efficiency kitchen.
The JADU may have separate sanitation or share sanitation with the primary dwelling. When sanitation is shared, interior access must be provided and the owner-occupancy requirement applies, subject to statutory exceptions. A recorded covenant is required before permit issuance.
Legally established space in a dwelling or accessory structure may be converted to an ADU. Eligible space can include garages, attics, basements, and other parts of a residential property. A conversion may include up to 150 square feet of expansion when limited to accommodating ingress and egress.
Conversions of legally permitted structures are exempt from the City’s lot-coverage, structural-setback, structural-height, and building-separation requirements. A legally established accessory structure may also be demolished and rebuilt in the same location and dimensions without additional structural setbacks. Fire, structural, moisture, energy, ventilation, egress, and habitability standards still apply.
Within an existing multifamily structure, qualifying non-livable space may be converted to ADUs. Anaheim must allow at least one conversion and up to 25% of the existing multifamily unit count when statutory conditions are met.
A lot with a proposed multifamily dwelling may include up to two detached ADUs. A lot with an existing multifamily dwelling may qualify for up to eight detached ADUs, but the number cannot exceed the existing primary-unit count. These detached units use four-foot side and rear setbacks and the applicable local and state height standards. Tenant protection, parking and recreation-space impacts, utilities, access, fire separation, and construction sequencing should be reviewed early.
Anaheim’s current development table allows detached ADUs up to 18 feet plus two additional feet for roof pitch, or the height of the primary dwelling, whichever is greater. The exact application can depend on unit size, property type, building configuration, and any applicable state-law protection.
Attached ADU height follows the underlying zone in the local code. Current state law protects qualifying attached ADUs up to 25 feet or the underlying-zone height limit, whichever is lower, and allows specified detached height exceptions. Historic, fire, structural, privacy, and specific-plan requirements should still be checked.
Qualifying new attached and detached ADUs generally use four-foot side and rear setbacks. Front setbacks follow the underlying zone, and Anaheim generally locates a detached ADU no closer to the front property line than the front-most wall of the primary dwelling. The Planning and Building Director may modify that front placement when applying it would prevent a qualifying 800-square-foot unit.
Eaves and roof overhangs must remain at least 12 inches from a property line. Conversions and same-footprint replacements may avoid new structural setbacks, while larger detached units can be subject to a ten-foot separation from the primary dwelling. Easements, utility clearances, fire access, and drainage remain separate constraints.
Anaheim applies the underlying-zone lot-coverage standard to larger locally regulated ADUs. The City’s table does not apply lot coverage to the 800-square-foot category, and legal conversions are exempt from lot-coverage requirements. State law also prevents lot coverage, floor-area, open-space, or front-setback rules from eliminating the protected ability to create a qualifying 800-square-foot ADU.
Pools, patios, required egress, building separation, driveways, trees, trash storage, tenant circulation, and usable outdoor space still affect the practical building area even when a zoning calculation does not prohibit the unit.
Qualifying Anaheim ADUs are ministerial and reviewed under objective standards rather than a discretionary neighborhood hearing. Attached ADUs and JADUs must use exterior materials, colors, roof form, and architectural details consistent with the primary dwelling. Upper-level windows, doors, and stairs should be placed to reduce privacy impacts where feasible.
Historic-register and Mills Act properties have additional objective standards. A pre-approved plan or ADU Express pathway does not waive site-specific zoning, utility, fire, structural, energy, public-works, address, or inspection requirements.
Anaheim requires no ADU parking for a studio and one space for an ADU with one or more bedrooms, unless an exemption applies. A JADU requires no parking.
Common exemptions include an ADU within one-half mile walking distance of a transit stop, location in an architecturally and historically significant district, conversion within the primary residence or an existing accessory structure, a permit-parking area where permits are not offered to the ADU occupant, proximity to a car-share station, demolition or conversion of parking in conjunction with the ADU, and qualifying concurrent construction with a new primary dwelling. Confirm the selected pathway and exemption on the parcel.
No replacement parking is required when a garage, carport, covered parking structure, or uncovered parking space is demolished or converted in conjunction with an ADU or JADU. Driveway access, curb cuts, historic-property requirements, and the remaining parking and circulation plan may still need review.
Anaheim does not require owner occupancy for a regular ADU under current state law. For a JADU, owner occupancy applies when the JADU shares sanitation facilities with the primary residence, subject to exceptions for governmental agencies, land trusts, and qualifying housing organizations. A JADU with separate sanitation is treated differently under current law.
Anaheim operates a separate and limited short-term rental permit program. Homeowners should not assume that a newly permitted ADU is eligible for nightly or vacation-rental use simply because it is near the resort area. Existing permit eligibility, zoning, business-license rules, operational standards, and any moratorium or program restrictions must be reviewed separately.
A JADU subject to Anaheim’s owner-occupancy provisions may be rented only for periods of at least 30 consecutive days. For conservative planning, evaluate an ADU as long-term housing unless the City confirms that the specific property and unit qualify for a short-term rental permit.
A design may appear workable but still conflict with setbacks, site access, utility locations, or other property constraints.
Anaheim’s mix of postwar homes, older detached garages, alley lots, multifamily properties, historic districts, and hillside neighborhoods supports several ADU approaches. The practical choice depends on the legal unit count, usable yard area, building separation, utilities, fire and historic conditions, access, homeowner goals, and budget.
A detached ADU is a separate, standalone residence built on the same property as the primary home.
A JADU is a smaller unit within the primary residence and is subject to additional state and local requirements.
A garage conversion ADU repurposes an existing garage into livable space, often reducing construction time by using an existing structure.
An attached ADU is connected to the primary home while providing a separate entrance and independent living space.
A second-story ADU is built above a home, garage, or other structure to add living space vertically.
A multifamily ADU adds new or converted residential units to a property containing an existing multifamily building.
Anaheim provides three ADU approval paths. Most custom ADUs and JADUs use the standard Planning and Building review process. A property owner may also use one of the City’s pre-approved plans through standard review. Eligible single-family properties can use ADU Express, which pairs a pre-approved detached plan with City staff assistance and an accelerated review process.
Ministerial review does not mean automatic approval. The application still needs a complete site plan, architectural and structural documents, energy compliance, utility planning, address assignment, public-works and fire information where applicable, fees, permits, and inspections.
Anaheim’s current code requires the City to provide a written application-completeness determination within 15 business days. Resubmittals are subject to the same 15-business-day completeness review. Once a qualifying application is complete and an existing dwelling is on the lot, California law generally requires approval or denial within 60 days.
These periods are not the full design-to-permit schedule. Surveying, property research, address assignment, utility planning, meter-spot work, plan preparation, engineering, applicant decisions, correction cycles, school fees, Public Works review, and unresolved existing conditions can extend the calendar. The ADU Express eligibility screening itself may take several weeks before the full permit package is ready.
Anaheim does not publish one dependable all-in ADU permit amount for every project. The City’s ADU FAQ states that fees are generally based on square footage and fixture counts. The project may also involve Planning, Building, Public Works, electrical, plumbing, mechanical, address, utility, fire, school-district, impact-fee, recordation, and inspection charges.
Anaheim posted updated development impact fees effective May 25, 2026. Request a current property- and scope-specific fee estimate after the ADU type, size, approval pathway, utility work, and site requirements are understood rather than relying on a generic online range.
Under current state law, an ADU with less than 750 square feet of interior livable area is exempt from local impact fees. For an ADU of 750 square feet or more, allowable impact fees must be charged proportionally in relation to the primary dwelling or applicable average unit size. Water and sewer connection or capacity charges are treated separately.
Anaheim’s current pre-approved-plan pages note updated development impact fees effective May 25, 2026. Confirm the current schedule and project-specific calculation with the City before permit issuance.
Anaheim directs ADU applicants to the applicable school district before building-permit issuance. Current California law generally allows school-facility fees on qualifying ADUs larger than 500 square feet, while the exact rate, district, threshold, exemptions, and payment procedure should be confirmed for the address and current year.
A JADU requires a recorded covenant addressing separate sale, legal use, owner occupancy when sanitation is shared, and the approved JADU attributes. Anaheim requires the document to be recorded with the Orange County Recorder before permit issuance. Use the current City form and instructions because statutory owner-occupancy rules changed in 2026.
Required inspections can include underground utilities, footing and foundation, slab, framing, rough plumbing, rough electrical, rough mechanical, insulation, drywall, energy measures, exterior work, utility connections, and final building approval. Inspection requirements depend on the selected plan and scope.
Use Anaheim’s Building Division inspection services and keep the approved plans and permit available on site. Work should not be covered before the required inspection, and the ADU should not be occupied until final approval is complete.
Anaheim’s current catalogue lists four free detached plans: Plan 001, a 224-square-foot studio; Plan 002, a 499-square-foot one-bedroom and one-bathroom unit; Plan 003, a 990-square-foot two-bedroom and two-bathroom unit; and Plan 004, a 1,199-square-foot three-bedroom and three-bathroom unit.
The plans may be used through standard review, and eligible single-family properties may use them through ADU Express. ADU Express plans cannot be modified and are limited to detached units. Site-specific work still includes eligibility screening, a meter spot, site plan, address, Title 24 and energy documents, structural or soils information where required, utilities, public-works review, fees, permits, and inspections.
General city rules are only the starting point. Your report helps identify possible ADU pathways and planning considerations for your specific property.
Get My Property-Specific ReviewAnaheim Public Utilities is the City’s electric and water provider. The City of Anaheim Public Works Department maintains municipal sewer infrastructure, while the property owner is responsible for the private sewer lateral serving the parcel. Southern California Gas commonly provides natural gas service, but the provider and selected all-electric or gas design should be confirmed by address.
Utility planning should begin before the footprint is fixed. An ADU that fits the zoning envelope may become more expensive if the electrical service needs a meter or panel upgrade, the sewer lateral is distant or damaged, a water service is undersized, or trenching crosses driveways, patios, tenants’ routes, trees, or public right-of-way.
| Utility Item | What Homeowners Should Know |
|---|---|
| Electrical service and panel capacity | Confirm the existing service rating, panel capacity, meter location, overhead or underground service, and planned ADU loads for HVAC, water heating, cooking, laundry, solar, batteries, and EV charging. Anaheim’s ADU FAQ states that a panel upgrade or other utility work may be required. For ADU Express, the City instructs applicants to contact Anaheim Public Utilities at (714) 765-6847 for a free meter spot and request a 400-amp multi-meter location. The meter-spot information is needed before staff can complete the site-specific process. Standard projects should also coordinate with Public Utilities early. |
| Water connection | Confirm the existing water-meter size, service-line condition, pressure, backflow requirements, fixture demand, and route to the ADU. The selected service arrangement may use the existing meter or require utility work based on current Anaheim Public Utilities standards and the total demand. |
| Sewer connection | Locate the private sewer lateral and confirm its depth, slope, material, cleanouts, condition, and connection point before placing the ADU. A camera inspection can identify roots, breaks, offsets, or unrecorded routing. The City code also allows the City Council to identify areas with insufficient sewer infrastructure where ADUs could affect health and safety, so address-specific capacity and Public Works requirements should be confirmed. |
| Separate metering | Anaheim’s code allows an ADU or JADU to be separately metered for gas, electricity, communications, water, and sewer, and a separate connection may be required for new construction. Separate meters are not automatically the best or required arrangement for every project. Metering decisions affect equipment location, trenching, utility applications, tenant billing, legal addressing, and schedule. Confirm the arrangement with Anaheim Public Utilities and the other serving providers before the exterior layout is finalized. |
| Requirement | What Homeowners Should Know |
|---|---|
| Fire access | Anaheim requires adequate emergency access to the primary dwelling, ADU, and JADU. Long rear-yard routes, gates, narrow side yards, hillside streets, building separation, hydrant and water-supply conditions, and current fire-hazard mapping should be reviewed before the plan is complete. Properties in east Anaheim may face moderate, high, or very high fire-hazard conditions. The final requirements depend on the address, building configuration, construction type, access, and Fire & Rescue review. |
| Fire sprinklers | An ADU or JADU generally does not require fire sprinklers when sprinklers are not required for the primary residence, and constructing the ADU does not by itself require sprinklers to be installed in the existing house. Anaheim may require an alternative means or method when needed to address fire-department access or water-supply conditions. |
| Solar and energy requirements | ADU permits submitted in 2026 must comply with the currently adopted California Building Standards Code, Energy Code, CALGreen requirements, and Anaheim amendments. Newly constructed detached ADUs commonly require energy modeling and may trigger photovoltaic requirements, subject to limited exceptions. Attached units and conversions can follow different compliance paths. Coordinate roof area, panel capacity, equipment locations, heat-pump systems, solar design, battery plans, and EV charging before the utility and structural documents are finalized. |
| Site Consideration | What Homeowners Should Know |
|---|---|
| Construction access | Many Anaheim lots have narrow side yards, attached garages, rear garages, alleys, pools, mature landscaping, fences, overhead lines, and limited street staging. Access affects excavation, concrete placement, framing delivery, utility trenching, debris removal, and equipment selection. On multifamily sites, the construction plan should protect tenant entrances, common areas, required egress, parking circulation, and utility service. Hillside lots may require smaller equipment, retaining-wall coordination, and additional logistics. |
| Easements | Review the preliminary title report, recorded easements, public-utility routes, sewer alignments, alleys, shared driveways, access rights, and visible site conditions before fixing the ADU location. An easement can shift the building envelope or utility route even when the zoning setbacks appear adequate. |
| Grading and retaining walls | New construction needs workable pad elevations, positive drainage, and foundation design suited to the property. Sloped east Anaheim parcels may require topographic survey work, grading plans, retaining-wall engineering, soils or geotechnical information, and fire-access coordination. On flatter lots, patios, driveways, property-line walls, localized ponding, and runoff toward neighboring property can still create drainage, wall, or site-work requirements. |
ADU cost planning in Anaheim should begin with the property, selected unit combination, and approval pathway. Team All Star Construction’s internal starting-cost model can support an early discussion, but it is not an Anaheim market average, a construction bid, or guaranteed pricing. Existing garage condition, building separation, historic review, hillside or fire conditions, utilities, tenant coordination, access, engineering, permits, finishes, and final scope can materially change the budget.
| Approximate ADU size | Team All Star internal starting-cost estimate |
|---|---|
| 180–300 sq ft | $90,000 minimum |
| 400 sq ft | $119,600 |
| 600 sq ft | $179,400 |
| 800 sq ft | $239,200 |
| 1,000 sq ft | $299,000 |
| 1,200 sq ft | $358,800 |
These estimates are based on Team All Star Construction’s internal starting-cost model for eligible ADU projects. They are not intended to represent every contractor, property, or project in Anaheim.
Planning disclaimer: Final pricing may vary based on the ADU type, property conditions, City requirements, design, engineering, permit review, utility work, structural needs, historic or fire requirements, grading, construction access, selected finishes, and final project scope.
A detached ADU requires a new foundation, complete structure and exterior envelope, plumbing, electrical, HVAC, energy compliance, utilities, and site work. On an Anaheim lot, building separation, access, electric meter work, sewer routing, historic conditions, fire-zone requirements, grading, and the selected plan size can influence cost as much as the floor area.
A garage conversion can reuse an existing shell, but it should not be priced as a basic interior remodel. The slab, footings, framing, roof, moisture protection, ceiling height, fire separation, windows, insulation, electrical service, plumbing route, drainage, and prior permits all need review. Historic properties may also have requirements for a street-facing garage door and driveway appearance.
Soft costs may include property research, measured drawings, survey or title work, architectural design, structural engineering, energy calculations, soils or geotechnical work where needed, plan check, building permits, Public Works review, school fees, impact fees where applicable, address processing, utility applications, recordation, and special inspections.
Homeowners may compare savings, a HELOC, a home-equity loan, a cash-out refinance, or a construction-related loan. Team All Star Construction is not a lender. Third-party lenders determine rates, terms, approvals, fees, monthly payments, underwriting, and borrower eligibility.
Long-term rental planning in Anaheim should consider bedroom count, privacy, parking expectations, utilities, laundry, outdoor space, tenant access, maintenance, vacancy, lease terms, and recent comparable listings. Anaheim’s tourism economy does not mean that every residential property or new ADU qualifies for short-term rental use.
Confirm the City’s current short-term rental permit rules, business-license requirements, and property eligibility before planning nightly rentals. This guide does not provide numerical rent estimates or promise rental income, occupancy, property-value growth, or investment returns.
Before comparing construction budgets or financing options, understand what may realistically fit on your property and which ADU approach makes the most sense for your goals.
The City Council adopted Ordinance No. 6620 on January 13, 2026. The current code update addresses ADU and JADU provisions, parking, unit combinations, application processing, multifamily allowances, and related zoning standards.
Anaheim’s current code allows qualifying single-family pathways for one existing-space conversion ADU, one new-construction ADU, and one JADU, with no more than four total dwelling units including the primary residence.
A lot with an existing multifamily dwelling may qualify for up to eight detached ADUs, provided the detached ADU count does not exceed the number of existing primary units on the property.
The current catalogue includes free detached plans for a 224-square-foot studio, a 499-square-foot one-bedroom, a 990-square-foot two-bedroom, and a 1,199-square-foot three-bedroom ADU. ADU Express eligibility and site-specific requirements still apply.
Anaheim’s ADU pages state that updated development impact fees went into effect on May 25, 2026. The final amount depends on the unit size, statutory exemptions, and current City calculation.
The right ADU contractor for an Anaheim property should look beyond a generic floor plan and preliminary price. Existing garage condition, front placement, building separation, utilities, historic status, fire-hazard mapping, slopes, tenant conditions, and construction access can materially change the design and build strategy.
Team All Star’s planning-first approach begins with the property. We review the proposed ADU type, City pathway, existing structures, setbacks, access, utilities, site conditions, homeowner goals, and preliminary budget factors before major design or construction decisions are made.
For qualified projects, Team All Star Construction can help homeowners move from property feasibility and early cost planning into design coordination, permit preparation, pre-construction planning, and the ADU build itself. The goal is to give homeowners clearer information before they commit significant money to plans, engineering, permits, or construction.
Team All Star Construction ADU Builder is operated by Team All Star Construction, CSLB #1009760. Approval, final scope, pricing, and timelines cannot be confirmed until the property and proposed project have been reviewed.
Team All Star ADU Builder is operated by Team All Star Construction, CSLB #1009760. The team helps qualified Anaheim homeowners evaluate ADU feasibility, compare construction options, plan preliminary costs, coordinate design and permitting considerations, and construct detached ADUs, attached ADUs, garage conversions, JADUs, pre-approved plan projects, and other qualifying ADUs.
Final feasibility, scope, pricing, and scheduling depend on the property, City requirements, utilities, historic or fire conditions, site access, design, engineering, permit review, selected finishes, and final construction documents.
ADUs are generally allowed on qualifying properties in areas that permit single-family or multifamily residential use. Final feasibility depends on the parcel's zoning, legal dwelling count, selected ADU pathway, front placement, setbacks, building separation, parking, utilities, fire and historic conditions, easements, and construction access.
Anaheim's current ordinance allows a detached ADU up to 1,200 square feet. A separate state-protected pathway preserves a qualifying detached ADU of up to 800 square feet with four-foot side and rear setbacks and the applicable protected height. A larger unit remains subject to lawful objective standards and site conditions.
Anaheim's current code recognizes qualifying pathways for one ADU created within existing or proposed space, one new-construction ADU, and one JADU. Including the primary dwelling, the total number of dwelling units may not exceed four. The exact combination must satisfy the applicable state and local requirements.
Qualifying new attached and detached ADUs generally use four-foot side and rear setbacks. Front standards follow the underlying zone, although they cannot eliminate a qualifying 800-square-foot unit. Anaheim's local table also requires ten feet of separation between the primary dwelling and certain larger detached ADUs. Conversions and same-footprint replacements may be treated differently.
A studio ADU and a JADU require no additional parking. An ADU with one or more bedrooms generally requires one space unless an exemption applies, such as qualifying transit proximity, conversion within existing space, a historic district, nearby car share, permit-parking restrictions, or demolition or conversion of parking in connection with the ADU.
Yes. Anaheim currently lists four free detached plans: 224, 499, 990, and 1,199 square feet. Eligible single-family properties may use the plans through ADU Express. The plans still need site-specific screening, utility planning, a site plan, address work, supporting technical documents, fees, permits, and inspections.
Anaheim must provide a written completeness determination within 15 business days and generally must approve or deny a complete qualifying application within 60 days when an existing dwelling is on the lot. The full design-to-permit calendar can be longer because property research, utilities, address assignment, plan preparation, engineering, corrections, fees, and outside clearances are separate steps.
A qualifying legally established garage may be converted to an ADU. Legal conversions are exempt from the City's lot-coverage, structural-setback, structural-height, and building-separation requirements, but the slab, foundation, framing, roof, moisture, fire separation, windows, utilities, energy compliance, and permit history still need review. Replacement parking is generally not required.
It may. Anaheim Public Utilities should review the existing service, planned loads, meter location, and panel capacity. ADU Express applicants are instructed to obtain a meter spot and request a 400-amp multi-meter location before staff completes the site-specific process. The final service design depends on the property and project.
Cost depends on the ADU type and size, existing garage condition, building separation, design, engineering, utilities, historic or fire requirements, grading, access, permits, energy systems, finishes, and final scope. Team All Star's figures are internal starting-cost estimates for eligible projects, not universal Anaheim pricing or a construction bid.
Get the official California HCD guide covering ADU types, setbacks, parking, permits, fees, utilities, owner occupancy, multifamily properties, and recent changes to state law.
Citywide rules explain what may be allowed in general, but they do not show the practical building area, legal dwelling count, condition of an existing garage, utility route, ADU Express eligibility, historic or fire requirements, access limitations, or likely project scope for one Anaheim address.
Qualified homeowners may request a Complimentary Professional ADU Feasibility Report prepared around the property and project goals before committing significant money to design, engineering, permits, or construction.
Team All Star Construction ADU Builder is operated by Team All Star Construction, CSLB #1009760. Our approach begins with understanding the property before major design, permitting, or construction commitments are made.
