ADU Pass
Anaheim
Orange County portion
Also in: No County
ADU Pass helps homeowners in Anaheim, Orange County, California navigate the permit paperwork for building an accessory dwelling unit. This area covers 7 ZIP codes.
Map
ADU details
ADU legality: allowed
ADUs allowed by-right in single-family and most multi-family zones. Anaheim runs an ADU Express expedited program (1-3 day approval for detached new construction using city pre-approved plans). Detached ADU height up to 16 ft (or 18-25 ft if attached to primary or near transit), parking exempt within 1/2 mile of public transit.
Cost scenarios
| Scenario | Sq ft | Permit | Build | Total |
|---|---|---|---|---|
| minimum | 150 | $5,500 | $75,000 | $80,500 |
| 600 | 600 | $7,800 | $300,000 | $307,800 |
| midpoint | 675 | $8,400 | $337,500 | $345,900 |
| 1000 | 1,000 | $16,800 | $490,000 | $506,800 |
| maximum | 1,200 | $19,500 | $576,000 | $595,500 |
Fee breakdown (as of 2026-04)
Permitting process
Viability (permitted uses)
- Long-term rental: yes Long-term rental (30+ days) explicitly permitted with no owner-occupancy requirement (AB 976, effective 2024-01-01).
- Short-term rental: with-restrictions Anaheim has a long history of restricting STRs (especially given Disneyland tourism dynamics). Short-Term Rental (STR) of an ADU requires a separate Short-Term Rental Permit with limited zoning eligibility; many residential zones do not allow STRs at all. Owners must remit Transient Occupancy Tax.
- Office rental: with-restrictions Standalone commercial office rental of an ADU is not a permitted ADU use. Home occupations within an owner-occupied ADU are allowed.
- Home office: yes Home occupation permitted with traffic / employee / signage limits per Anaheim Municipal Code.
- Studio / workshop: yes Personal artist studio / workshop is a permitted accessory residential use.
- Agriculture: with-restrictions Anaheim is heavily urbanized and zoning permits only minimal urban agriculture in residential districts; livestock is generally prohibited in single-family zones.
- Relative support: yes Family-occupancy ADU explicitly permitted; multigenerational housing is one of the most common Anaheim ADU use cases.
Incentives
Contacts
Contractor directory (6)
Scope: city, 12 mi radius.
General Contractor (6)
Utilities
- Water: Anaheim Public Utilities (APU) — municipal water utility serving all of Anaheim · 21d connect · $4,200
APU is a municipal utility — Anaheim is unusual in OC for being its own water and electric provider rather than relying on Cal Water / Golden State Water / SoCal Edison. Bimonthly billing for residential customers. - Sewer: Orange County Sanitation District (OC San / OCSD) for treatment; City of Anaheim collection system · 30d connect · $4,800
OC San operates Plant No. 1 in Fountain Valley, which receives Anaheim wastewater. OC San charges sewer fees separately on the property tax bill (annual sewer service charge) rather than per-connection. ADU connections are typically a city collection-system tap; OC San does not directly bill the homeowner for ADU connection. - Electric: Anaheim Public Utilities (APU) · 21d connect · $1,900
APU is a municipal electric utility (an SCPPA member). APU rates are typically lower than Southern California Edison's. New ADU service drop or panel upgrade typical for detached units; separate meter optional. - Gas: Southern California Gas Company (SoCalGas) · 30d connect · $1,500
Anaheim does not operate a municipal gas utility; SoCalGas serves Anaheim residential customers. Many ADU builders now spec all-electric heat pumps to skip the gas extension entirely.
Property values & taxes
Construction timeline
Realistic total: best 6mo · typical 10mo · worst 16mo
Deep OC contractor pool means lead times are moderate. ADU Express + a Pre-Approved Plan Catalogue choice can compress timeline below 8 months total.
Modular pathway inspectors are experienced with modular
Financing
State ADU loans:
- CalHFA ADU Grant Program up to $40,000
- HCD ADU Funding index
Insurance impact
Anaheim is in low wildfire-exposure territory (urban OC), so the FAIR Plan availability crisis affecting Sierra and coastal-canyon CA does not materially apply. Standard market carriers remain available.
HOA prevalence & preemption
Anaheim Hills, Platinum Triangle townhome / condo communities, and several master-planned subdivisions have HOAs. California's combined AB 670 (2019) + AB 3182 (2020) preemption voids covenants prohibiting ADUs and rental restrictions below 25% of separate interests. Some HOA design-standards regimes can still delay ADU approval per the 2026 Carlsbad case precedent.
Regulatory overlays (4)
- airport-noise-zone
Northwest Anaheim parcels lie under the FAA's Long Beach Airport (LGB) and Fullerton Airport approach zones, with noise contour overlays that affect residential construction. South Anaheim is influenced by John Wayne Airport (SNA) climbout patterns. - other
Disneyland Resort Specific Plan (SP 92-1, Anaheim Municipal Code Chapter 18.114) covers ~490 acres around the Disneyland Resort. Parcels within the SP follow the Specific Plan zoning rather than Section 18.38.015 standards. The Anaheim Resort Specific Plan and Platinum Triangle Master Land Use Plan are similar overlays elsewhere in the city. - seismic-retrofit-zone
All of Orange County is in California seismic design category D for the IBC/CRC. Newport-Inglewood / Whittier fault systems cross the metro. - flood-zone
Portions of Anaheim along the Santa Ana River corridor and Carbon Canyon Channel are mapped FEMA SFHAs. Most Anaheim residential parcels are outside SFHA but localized flooding risks exist near drainage infrastructure.
Technical envelope (climate & building code)
Climate & energy code
Building code
Amendments:
- Amendment
- Amendment
Contractor market (aggregate)
Legal history (timeline)
Current ordinance: Anaheim Municipal Code § 18.38.015 — Accessory Dwelling Units and Junior Accessory Dwelling Units, adopted 2017-09-26, last amended 2026-01-13
- 2017-09-26 — Anaheim Ordinance 6420 — initial AB 2299/SB 1069 ADU code (city-ordinance)
Anaheim City Council adopted the first local ADU ordinance to comply with the 2017 state ADU statute changes.
Effect: Established the local ADU framework in Anaheim Municipal Code Section 18.38.015. - 2020-09-22 — Anaheim Ordinance No. 6483 — comprehensive ADU rewrite (AB 68/881/587/671/SB 13/AB 670 conformance) (city-ordinance)
City Council comprehensively rewrote Section 18.38.015 to conform to the 2020 California ADU statute package.
Effect: Created the modern Anaheim ADU framework — ministerial review, 60-day clock, 4-ft side/rear setback floor, 16-ft height minimum for detached, transit-adjacent parking exemption, no owner-occupancy. - 2022-01-15 — Anaheim ADU Express expedited-pathway launch (city-ordinance)
Anaheim launched the ADU Express program: 1-3 day approval for detached, new-construction ADUs using City pre-approved plans on eligible single-family residential parcels.
Effect: Created one of California's fastest local ADU pathways for owners willing to use the Anaheim Pre-Approved Plan Catalogue (studio, 1BR/1BA, 2BR/2BA, 3BR/3BA options). Conversions and additions are NOT eligible for ADU Express. - 2025-01-14 — Anaheim ADU Section 18.38.015 update — SB 897 / AB 2221 conformance (city-ordinance)
Amended Section 18.38.015 for height standardization (16-ft minimum, up to 25-ft for attached ADUs in some configurations) and to remove ADU minimum-lot-size requirements.
Effect: Aligned Anaheim with the 2023-effective state ADU statute package. - 2026-01-13 — Anaheim ADU Section 18.38.015 update — 2025 statute package conformance (city-ordinance)
Anaheim City Council amended Section 18.38.015 for the latest California ADU statute updates effective 2025.
Effect: Latest conforming amendments — final amendment date in active code chapter is January 2026.
Known issues (1)
- other — Disneyland Resort Specific Plan (SP 92-1), Anaheim Resort Specific Plan, and Platinum Triangle Master Land Use Plan overlays govern parcels within those areas. Owners on those parcels follow the Specific Plan standards rather than Section 18.38.015 — most of those overlay areas are non-residential, so few SFR ADU projects are affected, but verify before assuming Section 18.38.015 applies.
Orange County — county ADU rules and overlays
County ADU ordinance
California state — ADU law and programs
State ADU law
California has the most aggressive statewide ADU preemption regime in the US, built from ~15 bills passed 2019-2025 and enforced by the Department of Housing and Community Development (HCD). The 2026 HCD ADU Handbook addendum (in effect with the 2025 Title 24 code cycle) is the operative state-level reference. The regime does four things at once: (1) preempts local zoning that would ban or unreasonably restrict ADUs; (2) imposes by-right ministerial approval with short statutory deadlines; (3) caps fees and utility-connection charges; and (4) empowers HCD to void non-compliant local ordinances.
State HOA preemption
California has the strongest statewide HOA-preemption regime in the US for accessory dwelling units, built from two bills: AB 670 (2019) voided ADU-prohibiting covenants on single-family residential lots, and AB 3182 (2020) extended and codified the preemption into the Davis-Stirling Common Interest Development Act (Civil Code §§ 4740 / 4741). The combination prohibits common-interest communities from banning ADUs, restricting rentals below 25% of separate interests, or treating ADUs as separate HOA interests. Limits remain: HOAs retain authority over reasonable design standards and statutory height limits, and the 2026 Carlsbad case (CalMatters coverage) established that an HOA's documented design-standards regime can effectively delay or constrain ADU approval short of outright prohibition.
State financing programs
California's flagship state-level ADU financing program — the CalHFA ADU Grant Program — is paused and has not been refunded since the original $100 million allocation was fully deployed 2023-12-28. The program provided up to $40,000 per qualifying homeowner for pre-construction and non-recurring closing costs and financed approximately 2,500 ADUs in two rounds. As of 2026-04, no new funding round has been announced in the state budget. CalHFA continues to publish anti-scam warnings because bad actors actively solicit homeowners claiming access to grant funds that no longer exist. State-level financing activity has shifted to local pilot programs (San Francisco, San Jose, Los Angeles, San Diego) and private financing products (Fannie Mae ADU mortgage, HELOC, construction-to-permanent).
State housing programs
California's state-level ADU programs are concentrated at HCD (technical guidance, ordinance review, enforcement) and the paused CalHFA grant pipeline (covered under stateFinancing). The state does not operate a central pre-approved ADU plan library — instead, AB 1332 (2024) created a preemption framework for local pre-approved plans with a 30-day ministerial-approval deadline, and major cities (Los Angeles, San Diego, San Jose, Sacramento, Berkeley) have rolled out their own plan catalogs. The California YIMBY coalition and other housing-policy organizations play an influential role in bill drafting; they are not state agencies but effectively drive much of the ADU legislative agenda. The Title 24 code cycle (now 2025, in effect for 2026 permits) is the authoritative building-code baseline.
Federal (United States) — ADU-relevant rules and programs
Federal ADU law
The United States has no federal statute that directly regulates accessory dwelling unit entitlement or design. Land-use authority over ADUs resides with states and local governments under the traditional police power. Federal engagement is limited to financing (Fannie/Freddie/FHA/VA/USDA), flood insurance (FEMA/NFIP), and discretionary housing programs (HUD), which are recorded in sibling sections of this file.
Federal financing programs
Federal housing-finance agencies and GSEs set nationwide underwriting rules that govern whether an ADU can be financed, appraised, and counted toward mortgage qualifying income. The relevant actors are Fannie Mae, Freddie Mac, FHA (HUD), VA, and USDA Rural Development.
Federal tax credits
There is no ADU-specific federal tax credit. ADUs may incidentally qualify for existing federal energy-efficiency and clean-energy tax credits when the ADU construction includes qualifying measures.
Federal housing programs
HUD administers several discretionary programs that can fund ADU-related activity at the grantee's election, but none is an ADU-specific program.
ZIP Codes
- 92801
- 92802
- 92804
- 92805
- 92806
- 92807
- 92808
Post Office
- 1180 W Ball Rd, 92812
- 2255 W Ball Rd, 92814
- 2320 E Lincoln Ave, 92816
- 5505 E Santa Ana Canyon Rd, 92817
- 701 N Loara St, 92803