Same zip, different jurisdiction: this page covers LA County Public Works (DPW). The same zip code(s) also cover parts of Covina (Covina (its own permits)). Verify your parcel's jurisdiction before filing — different agencies, different rules.
San Gabriel Valley · LA County (Unincorporated)
ADU permits in Vincent
Zip codes:9172291723
Vincent is an unincorporated community of about 16,000 people in the central San Gabriel Valley, between the cities of Covina and West Covina. It is not a city. Building permits run through Los Angeles County Public Works (Building & Safety).
Unincorporated LA County, not LADBS
Vincent is unincorporated territory. Building permits go through LA County Public Works (Building & Safety) ↗ under LA County Code Title 22, not the Los Angeles Department of Building and Safety (LADBS). Our address checker pulls real feasibility data for any LA County address; the Vincent-specific permit pathway is detailed below.
Vincent by the numbers
Rounded figures from the 2020 US Census, LA County Assessor parcel data, and LA County DPW permit records.
Population
16,000
2020 Census
Single-family homes
~4,200
LA County Assessor
Median lot size
6,800 sqft
Approximate
ADU permits filed 2025
~42
Source: HCD 2025 total (1,278) distributed proportionally across 2024 per-area shares. 2024: 48.
What makes Vincent different
Vincent is unincorporated despite tight integration with Covina + West Covina. Permits run through LA County DPW Building & Safety at the Alhambra office via EPIC-LA.
LA County ADU rules for Vincent
Last verified: 2026-04-15
Current LA County rules from Title 22 of the County Code, as applied to Vincent. State preemption (Gov Code §65852.2) means the county can't reduce below the state baseline. We note where that applies.
| 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) |
| Permitting agency | LA County Public Works (Building & Safety), Alhambra office |
| Local processing time | 60 days from complete submittal (state-mandated) |
Active overlays + extra rules in Vincent
LA County overlays + state-level designations that hit a meaningful share of Vincent parcels.
Watch-outs specific to Vincent
- 01
Don't file with Covina or West Covina — it's LA County
Vincent residents frequently default to Covina or West Covina city for permits, then have to restart with LA County.
Amenities + civic services in Vincent
Parks, libraries, and the school district that serve the area. Context that matters for renter appeal, family relocation, and long-term resale.
Public schools
School assignments vary by exact address. Performance levels below are from the official California School Dashboard — California's official accountability system uses colored levels (blue highest, red lowest) rather than 1-10 numeric scores.
District
Covina-Valley Unified School District + West Covina Unified School District (split)
Getting around Vincent
Bus-served suburban.
Transit + walkability
Bus lines
- Foothill Transit 187
- Foothill Transit 280
Walkability
Moderately walkable along Workman.
Nearby airports
Distance + type for each major Los Angeles-area airport reachable from Vincent. Useful for travel, commute, and any flight-path noise concerns on specific parcels.
Brackett Field (POC)
~6 miGeneral aviation
Ontario International (ONT)
~18 miInternational
Nearby areas to Vincent
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.
LA County unincorporated
Avocado Heights →
Eastern SGV unincorporated community with equestrian-zoned pockets. Large lots + LA County jurisdiction shape Accessory Dwelling Unit (ADU) opportunities.
LA County unincorporated
Bassett →
Central SGV unincorporated community. LA County jurisdiction + affordable mid-tier home values shape Accessory Dwelling Unit (ADU) economics for rental + family-use builds.
LA County unincorporated
Rowland Heights →
Dense Chinese-American + Taiwanese-American unincorporated SGV community. Strong long-term Accessory Dwelling Unit (ADU) rental demand from multigenerational-household culture + premium-Asian-retail commercial anchor.
Other permits in Vincent
LA County Public Works (Building & Safety) handles ADU, solar, and garage-conversion permits for Vincentand the rest of unincorporated LA County. We've broken each out as its own pathway page.
Frequently asked questions about Vincent ADUs
›Can I build an ADU in Vincent?
Yes. Vincent allows ADUs under LA County Code Title 22, aligned with California Gov Code §65852.2. Most single-family lots can host one ADU plus one JADU. Permits go through LA County Public Works (Building & Safety), not LADBS, since Vincent is unincorporated territory rather than a city.
›Why does Vincent use LA County rules instead of LA City rules?
Vincent is unincorporated. It's never been formally incorporated as its own city, so LA County serves as the local government. Building permits, zoning, sheriff, libraries (in many cases), and most other services run through county departments rather than city ones.
›Where do I submit my Vincent ADU permit?
Online via LA County's EPIC-LA portal, or in-person at the LA County Public Works Building & Safety counter in Alhambra (900 S. Fremont Avenue). The EPIC-LA online portal handles most ADU submittals end-to-end, so you rarely need to visit in person.
›How long does the ADU permit process take in Vincent?
LA County DPW targets the state-required 60-day plan check for ADUs from a complete submittal. Hillside, VHFHSZ, or environmental-review parcels can extend timelines by 4 to 12 weeks. Vincent-specific overlays may add additional time. See the watch-outs above.
›Are LA County's pre-approved ADU plans free?
Yes. LA County maintains three pre-approved standard ADU plans (Plans A, B, and C) usable in any unincorporated area, including Vincent. They're free to use, similar to LADBS's YOU-ADU program. The trade-off is reduced design flexibility, but for a fast, low-cost permit path they're the strongest option.
Ready to see what your Vincent lot can do?
Our free address checker pulls real zoning, overlay, and parcel data for any Los Angeles County address, including unincorporated Vincent. 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.
Vincent ordinance data last reviewed .
See an error or stale rule? corrections@permitpath.la
Primary sources: LA County DPW ADU info · LA County Code Title 22