San Gabriel Valley · LA County
ADU permits in Montebello
Zip codes:90640
Montebello is an independent city of about 63,000 people that bridges the San Gabriel Valley and southeast Los Angeles County, between East LA and Pico Rivera. It runs its own building and planning departments. Montebello has deep oil-field history (the 1916 oil discovery in the Montebello Hills made the city briefly the largest oil-producing field in California), and the Quiet Cannon event venue is a major regional banquet center.
Independent city — not LADBS
Montebello runs its own building department. Permits go through Montebello Planning Division ↗, 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 Montebello ordinance breakdown below covers the city-specific permit path.
Montebello 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
63,000
2020 Census
Single-family homes
~14,500
LA County Assessor
Median lot size
6,000 sqft
Approximate
Median home value
$0.8M
Zillow / Redfin
What makes Montebello different
Montebello's ADU ordinance is in Montebello Municipal Code Title 17. The city aligns with the California state baseline. Plan check is typically 45-60 days. The Montebello Hills oil-field history means some hillside parcels face active or legacy oil-operation review.
Montebello ADU ordinance — the rules that apply
Last verified: 2026-05-12
The current ADU rules in Montebello, 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) |
| Montebello Hills oil-field review | Apply to hillside parcels near legacy or active operations |
| Local processing time | 45-60 days for standard ADUs |
| Pre-approved standard plans | None city-specific |
Source: Montebello Planning Division ↗
Active overlays + extra rules in Montebello
City overlays + state-level designations that hit a meaningful share of Montebello parcels. Each affects what you can build, how long it takes, or how much it costs.
Montebello Hills oil-field zones
~12% of parcelsHillside parcels in or near the Montebello Hills oil field face additional permitting review.
Watch-outs specific to Montebello
Patterns we see across MontebelloADU permits. None are dealbreakers — they're just the things people get wrong most often.
- 01
Montebello Unified school fees apply
Montebello Unified School District (MUSD) charges school facility fees on ADUs over 500 sqft.
- 02
Hillside parcels need oil-field disclosure
Lots in the Montebello Hills need oil-field disclosure as part of property records. Worth a title-search check before plans.
Need a person, not a wizard?
Routes that fit Montebello
Based on what we know about Montebello, these are the lead types that usually make sense here. Pick whichever fits your situation. All free, no obligation.
Complex permit context
Request a Montebello permit referral
Coastal, hillside, historic, fire-zone, or multi-overlay parcels in Montebello 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 Montebello projects.
Complex permit context
Request a Montebello permit referral
Coastal, hillside, historic, fire-zone, or multi-overlay parcels in Montebello 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 Montebello projects.
Plans that fit Montebello lots
Montebellodoesn'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 Montebello
Parks, libraries, and the school district that serve the area. Context that matters for renter appeal, family relocation, and long-term resale.
Parks + sports
Grant Rea Park
Lincoln Avenue + Wilcox
Montebello's main community park with sports facilities.
- Baseball
- Soccer
- Basketball
- Playground
- Community Center
- Picnic
Whittier Narrows Recreation Area (adjacent)
Adjacent south of Montebello
1,500-acre LA County regional recreation area. Hiking, biking, fishing lakes, the Whittier Narrows Nature Center.
Adjacent 1,500-acre county recreation area
- Trails
- Fishing
- Playground
- Picnic
Libraries
Montebello Library
LA County Library
Whittier Boulevard, central
Public schools
School assignments vary by exact address. The district + notable schools below cover most of the area.
District
Montebello Unified School District (MUSD)
Notable schools in the area
- Montebello High School
- Bell Gardens High School
Getting around Montebello
Bus-served. Montebello Bus Lines + Metro routes.
Transit + walkability
Bus lines
- Montebello Bus Lines Routes 10 + 30 + 40
- Metro 70 (Cesar Chavez to El Monte)
Walkability
Whittier Boulevard commercial district is walkable. Residential is car-dependent.
Nearby airports
Distance + type for each major Los Angeles-area airport reachable from Montebello. Useful for travel, commute, and any flight-path noise concerns on specific parcels.
Hollywood Burbank Airport (BUR)
~12 miRegional / domestic
Los Angeles International (LAX)
~17 miInternational
Community + landmarks in Montebello
Annual events, landmarks, and the places that anchor the area's identity. Context for renter appeal and long-term resale.
Annual events
Montebello Greek Festival
Spring
Annual Greek food + culture festival hosted by the Saint Anthony Greek Orthodox Church.
Source ↗
What makes Montebello Montebello
Event venue
Quiet Cannon
Major regional banquet + event venue. Hosts weddings, quinceañeras, corporate events for the eastern LA region.
Regional park
Whittier Narrows Recreation Area
1,500-acre LA County recreation area adjacent to Montebello. Major regional hiking + family destination.
Nearby areas to Montebello
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.
Frequently asked questions about Montebello ADUs
›Can I build an ADU in Montebello?
Yes. Montebello 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 Montebello Planning Division, not LADBS — see the ordinance table above for the specific rules.
›How does Montebello differ from LA City for ADU permits?
Three main differences: the permit agency (Montebello Planning Division 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 Montebello?
Median home value in Montebello is around $0.8M, 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 Montebello have pre-approved standard plans like LA's YOU-ADU?
No. Unlike LADBS, Montebello 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 Montebello address?
Yes. The wizard pulls real zoning, overlay, and parcel data for any Los Angeles County address, including Montebello. What you'll see today: feasibility for your specific lot, the overlays that apply, and a routing summary pointing at Montebello Planning Division for the permit submittal. Deeper Montebello-specific permit walkthroughs are next on the roadmap as we expand from LADBS into the independent-city ordinances.
Ready to see what your Montebello lot can do?
Our free address checker pulls real zoning, overlay, and parcel data for any Los Angeles County address — including Montebello. Start there and we'll surface what applies to your specific lot.
Check your address →