South Bay · LA County
ADU permits in Cerritos
Zip codes:9070190703
Cerritos is an independent city of about 50,000 people in southeast Los Angeles County, bordered by Long Beach, Lakewood, La Mirada, and Norwalk. It runs its own building and planning departments. The city is famous for two civic-infrastructure achievements: the Cerritos Library (the 'Library of the Future' — a futuristic 2002 titanium-clad building) and the Cerritos Center for the Performing Arts. Cerritos is also home to one of the largest auto-retail districts in the United States.
Independent city — not LADBS
Cerritos runs its own building department. Permits go through Cerritos Community Development Department ↗, not the Los Angeles Department of Building and Safety (LADBS). Our address checker pulls real zoning + overlay data for any Los Angeles County address. The Cerritos ordinance breakdown below covers the city-specific permit path.
Cerritos by the numbers
Rounded figures from the 2020 US Census, LA County Assessor parcel data, and the city's own published reports. Estimates only — your specific lot can vary widely.
Population
50,000
2020 Census
Single-family homes
~14,500
LA County Assessor
Median lot size
7,800 sqft
Approximate
Median home value
$1.1M
Zillow / Redfin
What makes Cerritos different
Cerritos's ADU ordinance is in Cerritos Municipal Code Title 22. The city aligns with the California state baseline. Plan check is typically 45-60 days. The city has unusually consistent architectural standards across its residential neighborhoods, dating to the 1950s-70s master-planned development era.
Cerritos ADU ordinance — the rules that apply
Last verified: 2026-05-12
The current ADU rules in Cerritos, sourced from the city's published ordinance and verified against CA Government Code §65852.2 (which preempts local rules stricter than state baselines). When you see "state default," that means the city can't reduce below this number under state law.
| Max detached ADU size | 1,200 sqft (state default) |
| Max ADU height | 16 ft / 18 ft with second-story setbacks |
| Setbacks | 4 ft side / 4 ft rear (state minimum) |
| Local processing time | 45-60 days for standard ADUs |
| Pre-approved standard plans | None city-specific |
Active overlays + extra rules in Cerritos
City overlays + state-level designations that hit a meaningful share of Cerritos parcels. Each affects what you can build, how long it takes, or how much it costs.
Watch-outs specific to Cerritos
Patterns we see across CerritosADU permits. None are dealbreakers — they're just the things people get wrong most often.
- 01
ABC Unified school fees apply
ABC Unified School District (ABCUSD) charges school facility fees on ADUs over 500 sqft. ABCUSD is consistently among California's higher-performing public districts.
- 02
Architectural consistency standards across residential blocks
Cerritos has unusually consistent residential architectural standards from its 1950s-70s master-planning era. Exterior-visible ADUs face design-compatibility review.
Need a person, not a wizard?
Routes that fit Cerritos
Based on what we know about Cerritos, these are the lead types that usually make sense here. Pick whichever fits your situation. All free, no obligation.
Complex permit context
Request a Cerritos permit referral
Coastal, hillside, historic, fire-zone, or multi-overlay parcels in Cerritos usually mean a permit expediter pays for itself in saved months. We work with vetted Los Angeles permit expediters and expeditors (both spellings) who've handled Cerritos projects.
Complex permit context
Request a Cerritos permit referral
Coastal, hillside, historic, fire-zone, or multi-overlay parcels in Cerritos usually mean a permit expediter pays for itself in saved months. We work with vetted Los Angeles permit expediters and expeditors (both spellings) who've handled Cerritos projects.
Talk to our financing broker
Want someone to walk you through your options?
Our in-house broker has 30+ years in LA mortgage and ADU financing. He'll lay out HELOC, construction-to-perm, and ADU-specific products like Renofi against your situation — free, no obligation.
Talk to our financing broker
Want someone to walk you through your options?
Our in-house broker has 30+ years in LA mortgage and ADU financing. He'll lay out HELOC, construction-to-perm, and ADU-specific products like Renofi against your situation — free, no obligation.
Plans that fit Cerritos lots
Cerritosdoesn't maintain a city-specific pre-approved plan library the way the Los Angeles Department of Building and Safety (LADBS) does. California Department of Housing and Community Development (HCD)-approved prefab (which bypasses local plan check) and custom designer plans are the main paths:
Amenities + civic services in Cerritos
Parks, libraries, and the school district that serve the area. Context that matters for renter appeal, family relocation, and long-term resale.
Parks + sports
Heritage Park
Bloomfield Avenue, central Cerritos
Themed park modeled after Heritage Park USA history. Includes a sculpture garden + community programs.
- Playground
- Picnic
- Community Center
Cerritos Regional Park
183rd Street, central Cerritos
Multi-use regional park with sports facilities + a fishing lake.
- Baseball
- Soccer
- Basketball
- Fishing
- Playground
- Picnic
Cerritos Sculpture Garden
Adjacent to the Cerritos Library
Outdoor public sculpture garden.
- Trails
- Picnic
Libraries
Cerritos Library
Other
183rd Street, civic center
Independent Cerritos Library system — the 'Library of the Future' — a 2002 titanium-clad building with an indoor saltwater aquarium + interactive exhibits. Internationally recognized for innovative library design.
Public schools
School assignments vary by exact address. The district + notable schools below cover most of the area.
District
ABC Unified School District (ABCUSD)
Notable schools in the area
- Cerritos High School
- Whitney High School (highly-ranked magnet, 7-12)
- Carmenita Middle School
Whitney High School (ABCUSD's magnet) is consistently ranked among California's top public secondary schools.
Getting around Cerritos
Car-dependent. Long Beach Transit + Norwalk Transit serve major corridors.
Transit + walkability
Bus lines
- Long Beach Transit
- Norwalk Transit
Walkability
Cerritos Towne Center + Los Cerritos Center mall are walkable. Most residential is car-dependent.
Nearby airports
Distance + type for each major Los Angeles-area airport reachable from Cerritos. Useful for travel, commute, and any flight-path noise concerns on specific parcels.
Long Beach Daugherty Field (LGB)
~8 miRegional / domestic
Los Angeles International (LAX)
~18 miInternational
Community + landmarks in Cerritos
Annual events, landmarks, and the places that anchor the area's identity. Context for renter appeal and long-term resale.
Annual events
Cerritos Center for the Performing Arts season
September - June (annual season)
1993-built 1,700-seat theater hosting major touring acts. Significant regional arts venue.
Source ↗
What makes Cerritos Cerritos
Library / landmark
Cerritos Library ('Library of the Future')
2002 titanium-clad innovative library building with an indoor saltwater aquarium, interactive children's exhibits, and unusual interior architecture. Internationally recognized as one of the most-distinctive public-library designs of the 21st century.
Auto-retail district
Cerritos Auto Square
One of the largest auto-retail districts in the United States. 20+ dealerships on a single boulevard.
Theater
Cerritos Center for the Performing Arts
1993-built 1,700-seat theater + concert hall.
Nearby areas to Cerritos
Other Los Angeles-area pages worth a look. Each one runs different Accessory Dwelling Unit (ADU) rules depending on jurisdiction — we show you what changes when you cross a city or county line.
Independent city
Long Beach →
Affordable lot prices (the median home value is significantly under the LA Westside) plus a dense, well-served transit grid make Long Beach one of the strongest dollar-for-dollar Accessory Dwelling Unit (ADU) markets in LA County. Coastal Development Permits affect only the harbor + Belmont Shore strip.
Independent city
Lakewood →
Mass-produced 1950s starter homes on consistent lot sizes give Lakewood unusually predictable Accessory Dwelling Unit (ADU) economics. Strong long-term rental demand from the Long Beach + South Bay employment base. Affordable price point relative to coastal South Bay cities.
Frequently asked questions about Cerritos ADUs
›Can I build an ADU in Cerritos?
Yes. Cerritos allows ADUs under its local ordinance, aligned with California Government Code §65852.2 (the state baseline that preempts overly-strict local rules). Most single-family lots can host one ADU plus one JADU. Permits go through Cerritos Community Development Department, not LADBS — see the ordinance table above for the specific rules.
›How does Cerritos differ from LA City for ADU permits?
Three main differences: the permit agency (Cerritos Community Development Department vs. LADBS), the local ordinance details (each city has some flexibility above the state baseline), and the timeline (some cities are faster, some slower than LA's 60-day plan check). See the ordinance breakdown above for the specifics on each.
›How much does it cost to build an ADU in Cerritos?
Median home value in Cerritos is around $1.1M, which usually means lot economics support a quality ADU build of $200K–$400K all-in. Hillside, coastal, or VHFHSZ lots add 7–25% on top. HCD-prefab units (Connect Homes, Cover, Plant Prefab) bypass local plan check entirely and typically run $190K–$350K turnkey.
›Does Cerritos have pre-approved standard plans like LA's YOU-ADU?
No. Unlike LADBS, Cerritos does not maintain a city-specific pre-approved plan library. The two faster paths are an HCD-approved prefab (factory-certified, skips local plan check) or a custom designer drawing for your lot. The slower path is a fully custom architect-led design.
›Will the PermitPathLA wizard work for my Cerritos address?
Yes. The wizard pulls real zoning, overlay, and parcel data for any Los Angeles County address, including Cerritos. What you'll see today: feasibility for your specific lot, the overlays that apply, and a routing summary pointing at Cerritos Community Development Department for the permit submittal. Deeper Cerritos-specific permit walkthroughs are next on the roadmap as we expand from LADBS into the independent-city ordinances.
Ready to see what your Cerritos lot can do?
Our free address checker pulls real zoning, overlay, and parcel data for any Los Angeles County address — including Cerritos. Start there and we'll surface what applies to your specific lot.
Check your address →Reviewed by Yair Harpaz, Founder, PermitPathLA. California DRE-licensed broker with 30+ years of Los Angeles real estate and mortgage industry experience.
Cerritos ordinance data last reviewed .
See an error or stale rule? corrections@permitpath.la
Primary sources: Cerritos planning · Cerritos Community Development Department permits