Same zip, different jurisdiction: this page covers LA County Public Works (DPW). The same zip code(s) also cover parts of Pasadena (Pasadena (its own permits)). Verify your parcel's jurisdiction before filing — different agencies, different rules.
San Gabriel Valley · LA County (Unincorporated)
ADU permits in East Pasadena
Zip codes:91107
East Pasadena is a small unincorporated community of about 6,500 people immediately east of the City of Pasadena, between Sierra Madre and Arcadia. It is not a city. Building permits run through Los Angeles County Public Works (Building & Safety), not Pasadena's building department. Premium home values reflect proximity to the Pasadena school district + parks.
Unincorporated LA County, not LADBS
East Pasadena 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 East Pasadena-specific permit pathway is detailed below.
East Pasadena by the numbers
Rounded figures from the 2020 US Census, LA County Assessor parcel data, and LA County DPW permit records.
Population
6,500
2020 Census
Single-family homes
~1,700
LA County Assessor
Median lot size
6,800 sqft
Approximate
ADU permits filed 2025
~21
Source: HCD 2025 total (1,278) distributed proportionally across 2024 per-area shares. 2024: 24.
What makes East Pasadena different
East Pasadena residents often default to Pasadena city for permits. All East Pasadena permits run through LA County DPW Building & Safety at the Alhambra office via EPIC-LA. Adjacent to Eaton Canyon Natural Area + the Eaton Fire 2025 burn perimeter — though East Pasadena itself was largely spared.
LA County ADU rules for East Pasadena
Last verified: 2026-04-15
Current LA County rules from Title 22 of the County Code, as applied to East Pasadena. 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 East Pasadena
LA County overlays + state-level designations that hit a meaningful share of East Pasadena parcels.
Eaton Canyon foothill adjacency
~25% of parcelsNorthern parcels near Eaton Canyon face hillside + VHFHSZ considerations.
Watch-outs specific to East Pasadena
- 01
Don't file with Pasadena — it's LA County
East Pasadena residents often start permits with Pasadena city's building department, then have to restart with LA County DPW.
- 02
Eaton Canyon foothill VHFHSZ awareness
Northern East Pasadena parcels near Eaton Canyon face VHFHSZ + hillside review. Verify before plans.
Need a person, not a wizard?
Routes that fit East Pasadena
Based on what we know about East Pasadena, these are the lead types that usually make sense here. Pick whichever fits your situation. All free, no obligation.
Complex permit context
Request a East Pasadena permit referral
Coastal, hillside, historic, fire-zone, or multi-overlay parcels in East Pasadena usually mean a permit expediter pays for itself in saved months. We work with affiliated Los Angeles permit expediters and expeditors (both spellings) who've handled East Pasadena projects.
Complex permit context
Request a East Pasadena permit referral
Coastal, hillside, historic, fire-zone, or multi-overlay parcels in East Pasadena usually mean a permit expediter pays for itself in saved months. We work with affiliated Los Angeles permit expediters and expeditors (both spellings) who've handled East Pasadena 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.
Amenities + civic services in East Pasadena
Parks, libraries, and the school district that serve the area. Context that matters for renter appeal, family relocation, and long-term resale.
Parks + sports
Eaton Canyon Natural Area (adjacent)
Altadena Drive
190-acre LA County natural area with hiking trails. Adjacent to East Pasadena.
Eaton Canyon Falls hiking destination
- Trails
- Picnic
Libraries
Pasadena Public Library (used by residents)
Pasadena Public Library
Pasadena (adjacent)
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
Pasadena Unified School District
Getting around East Pasadena
Walkable + Metro A Line nearby.
Transit + walkability
Bus lines
- Metro 264
- Pasadena Transit
Nearest rail
Metro A Line (Gold) — Sierra Madre Villa Station (about 0.5 mi west)
Walkability
Walkable along Foothill + Colorado.
Transit parking exemption applies. Lots within ½ mile of a major transit corridor skip the off-street parking requirement for Accessory Dwelling Units (ADUs) under California state rules. Confirm with the city or county that your specific parcel qualifies.
Nearby airports
Distance + type for each major Los Angeles-area airport reachable from East Pasadena. Useful for travel, commute, and any flight-path noise concerns on specific parcels.
Hollywood Burbank Airport (BUR)
~10 miRegional / domestic
Los Angeles International (LAX)
~24 miInternational
Nearby areas to East Pasadena
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
Altadena →
Altadena's large historic lots and Los Angeles County jurisdiction (LADBS rules don't apply here) make Accessory Dwelling Unit (ADU) economics attractive, but the active rebuild context, Very High Fire Hazard Severity Zone (VHFHSZ) rules, and county-not-city permitting all add complexity worth understanding upfront.
LA County unincorporated
Mayflower Village →
Small premium-mid-tier SGV unincorporated community between Arcadia + Monrovia. LA County jurisdiction shapes the Accessory Dwelling Unit (ADU) permitting path.
LA County unincorporated
East San Gabriel →
Central-SGV unincorporated community surrounded by 4 cities (San Gabriel, Pasadena, San Marino, Temple City). LA County jurisdiction + strong Asian-American cultural anchor + premium home values shape the Accessory Dwelling Unit (ADU) calculus.
Frequently asked questions about East Pasadena ADUs
›Can I build an ADU in East Pasadena?
Yes. East Pasadena 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 East Pasadena is unincorporated territory rather than a city.
›Why does East Pasadena use LA County rules instead of LA City rules?
East Pasadena 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 East Pasadena 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 East Pasadena?
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. East Pasadena-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 East Pasadena. 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 East Pasadena lot can do?
Our free address checker pulls real zoning, overlay, and parcel data for any Los Angeles County address, including unincorporated East Pasadena. 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.
East Pasadena 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