South Bay · LA County
ADU permits in La Mirada
Zip codes:90638
La Mirada is an independent city of about 49,000 people in southeast Los Angeles County, at the Orange County border. It runs its own building and planning departments. The city is home to Biola University (a major private Christian university), the 1,200-seat La Mirada Theatre for the Performing Arts, and La Mirada Regional Park's Splash water park.
Independent city — not LADBS
La Mirada runs its own building department. Permits go through La Mirada 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 La Mirada ordinance breakdown below covers the city-specific permit path.
La Mirada 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
49,000
2020 Census
Single-family homes
~13,500
LA County Assessor
Median lot size
6,500 sqft
Approximate
Median home value
$0.9M
Zillow / Redfin
What makes La Mirada different
La Mirada's ADU ordinance is in La Mirada Municipal Code Title 22. The city aligns with the California state baseline. Plan check is typically 45-60 days.
La Mirada ADU ordinance — the rules that apply
Last verified: 2026-05-12
The current ADU rules in La Mirada, 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 La Mirada
City overlays + state-level designations that hit a meaningful share of La Mirada parcels. Each affects what you can build, how long it takes, or how much it costs.
Watch-outs specific to La Mirada
Patterns we see across La MiradaADU permits. None are dealbreakers — they're just the things people get wrong most often.
- 01
Norwalk-La Mirada Unified school fees apply
Norwalk-La Mirada Unified School District (NLMUSD) charges school facility fees on ADUs over 500 sqft.
- 02
Biola University drives rental demand
Biola University's 6,500 students + faculty drive steady long-term rental demand on residential parcels within walking distance of campus.
Need a person, not a wizard?
Routes that fit La Mirada
Based on what we know about La Mirada, these are the lead types that usually make sense here. Pick whichever fits your situation. All free, no obligation.
Complex permit context
Request a La Mirada permit referral
Coastal, hillside, historic, fire-zone, or multi-overlay parcels in La Mirada 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 La Mirada projects.
Complex permit context
Request a La Mirada permit referral
Coastal, hillside, historic, fire-zone, or multi-overlay parcels in La Mirada 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 La Mirada projects.
Plans that fit La Mirada lots
La Miradadoesn'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 La Mirada
Parks, libraries, and the school district that serve the area. Context that matters for renter appeal, family relocation, and long-term resale.
Parks + sports
La Mirada Regional Park + Splash La Mirada Aquatic Park
Adelfa Drive, central La Mirada
Major regional park with the Splash water park (slides + lazy river), recreation center, ball fields.
Splash water park with slides + lazy river
- Pool
- Splash Pad
- Baseball
- Soccer
- Playground
- Community Center
- Picnic
La Mirada Theatre Plaza
Adjacent to the La Mirada Theatre
Civic plaza adjacent to the regional performing arts theater.
- Picnic
Libraries
La Mirada Library
LA County Library
La Mirada Boulevard
Public schools
School assignments vary by exact address. The district + notable schools below cover most of the area.
District
Norwalk-La Mirada Unified School District (NLMUSD)
Notable schools in the area
- La Mirada High School
- Biola University (private Christian university)
Getting around La Mirada
Car-dependent. Norwalk Transit serves the city.
Transit + walkability
Bus lines
- Norwalk Transit Routes
- Metro 460
Walkability
Mostly car-dependent. Walkable pockets around Biola University + La Mirada Theatre.
Nearby airports
Distance + type for each major Los Angeles-area airport reachable from La Mirada. Useful for travel, commute, and any flight-path noise concerns on specific parcels.
Long Beach Daugherty Field (LGB)
~12 miRegional / domestic
John Wayne Airport (SNA)
~15 miInternational
Los Angeles International (LAX)
~23 miInternational
Community + landmarks in La Mirada
Annual events, landmarks, and the places that anchor the area's identity. Context for renter appeal and long-term resale.
Annual events
La Mirada Theatre season
September - June (annual season)
Major touring + Broadway-style productions at the 1,200-seat La Mirada Theatre for the Performing Arts.
Source ↗
What makes La Mirada La Mirada
Theater
La Mirada Theatre for the Performing Arts
1977-built 1,200-seat theater. Major regional arts venue staging Broadway-style productions + touring acts.
Private university
Biola University
Christian liberal-arts university. 6,500 students. Major regional employer.
Water park
Splash La Mirada Aquatic Park
Public water park with slides + lazy river. Major summer family destination.
Nearby areas to La Mirada
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
Norwalk →
Affordable mid-tier home values, two rail-line transit access (Metro C Line + Metrolink), and Cerritos College's employment base make Norwalk a steady Southeast LA Accessory Dwelling Unit (ADU) market.
Independent city
Whittier →
Walkable Uptown Whittier historic downtown, Whittier College's employment base, the Whittier Greenway Trail bike infrastructure, and foothill character drive solid Accessory Dwelling Unit (ADU) demand. Northern Whittier hillside parcels qualify for premium financing leads.
Frequently asked questions about La Mirada ADUs
›Can I build an ADU in La Mirada?
Yes. La Mirada 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 La Mirada Community Development Department, not LADBS — see the ordinance table above for the specific rules.
›How does La Mirada differ from LA City for ADU permits?
Three main differences: the permit agency (La Mirada 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 La Mirada?
Median home value in La Mirada is around $0.9M, 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 La Mirada have pre-approved standard plans like LA's YOU-ADU?
No. Unlike LADBS, La Mirada 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 La Mirada address?
Yes. The wizard pulls real zoning, overlay, and parcel data for any Los Angeles County address, including La Mirada. What you'll see today: feasibility for your specific lot, the overlays that apply, and a routing summary pointing at La Mirada Community Development Department for the permit submittal. Deeper La Mirada-specific permit walkthroughs are next on the roadmap as we expand from LADBS into the independent-city ordinances.
Ready to see what your La Mirada lot can do?
Our free address checker pulls real zoning, overlay, and parcel data for any Los Angeles County address — including La Mirada. 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.
La Mirada ordinance data last reviewed .
See an error or stale rule? corrections@permitpath.la
Primary sources: La Mirada planning · La Mirada Community Development Department permits