Los Angeles County building & ADU permits
Recent permit activity, updated continuously.
Los Angeles County is the building department for the unincorporated basin and for the contract cities it permits on behalf of, so one record set spans communities from Azusa and La Verne to Hacienda Heights. The county tracks accessory dwelling units as a first-class field for its state housing reporting, which means ADU projects are identified at the source rather than inferred from a description.
Igni is tracking 346 residential and building permits in Los Angeles County, CA — including 69 classified accessory-dwelling-unit (ADU) filings. The most active ZIP is 91001. The most recent filing Igni tracked was Sep 14, 2026. All records come from LA County EPIC-LA (ArcGIS), an official government open-data feed, and are refreshed continuously.
346
Permits tracked
69
ADU permits
65
Distinct ZIP codes
Sep 14, 2026
Newest permit
Recent permits
A sample of the freshest permits in this jurisdiction — ZIP and city only (no street addresses).
| ZIP | Permit type | ADU type | Valuation | Applied |
|---|---|---|---|---|
| 91390 | Residential | — | $17,200 | Sep 8, 2026 |
| 90063 | Residential | — | $9,000 | Sep 8, 2026 |
| 90043 | Residential | — | $5,000 | Sep 8, 2026 |
| 91748 | Residential | — | $105,685 | Sep 8, 2026 |
| 90604 | Residential | — | $400 | Sep 8, 2026 |
| 90027 | Commercial | — | $19,000 | Sep 8, 2026 |
| 90604 | Residential | — | $500 | Sep 8, 2026 |
| 90604 | Residential | — | $500 | Sep 8, 2026 |
| 91214 | Residential | — | $8,000 | Sep 8, 2026 |
| 90604 | Residential | — | $500 | Sep 8, 2026 |
| 91744 | Residential | — | $20,000 | Sep 8, 2026 |
| 91311 | Residential | — | $10,000 | Sep 8, 2026 |
| 90604 | Residential | — | $500 | Sep 8, 2026 |
| 90606 | Residential | — | $7,500 | Sep 8, 2026 |
| 93510 | Residential | — | $602,878 | Sep 8, 2026 |
| 91001 | Residential | Detached ADU | $875,000 | Sep 9, 2026 |
| 91001 | Residential | — | $3,000 | Sep 9, 2026 |
| 91722 | Residential | Garage conversion | $79,000 | Sep 9, 2026 |
| 90022 | Residential | — | $90,200 | Sep 9, 2026 |
| 90063 | Residential | — | $4,000 | Sep 9, 2026 |
Top ZIP codes by recent activity
ADU types in the recent set
Housing law — California
California mandates ministerial (by-right) approval of accessory dwelling units statewide, with a 60-day decision deadline and one ADU plus one junior ADU allowed on most single-family lots; owner-occupancy is generally not required.
SB 9 allows by-right duplexes and urban lot splits on single-family lots, and newer transit-oriented upzoning (SB 79) phases in from 2026.
Data source
Sourced from LA County EPIC-LA (ArcGIS). LA County Open Data ToU (commercial use permitted).
Nearby cities — California
Learn more about ADUs & building permits
Background reading on accessory dwelling units, building permits, and how Igni turns Los Angeles County permit records into leads.
Los Angeles County permit data — FAQ
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How fresh is Los Angeles County permit data?
Does Los Angeles County allow accessory dwelling units (ADUs)?
Get permit leads — Los Angeles County
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Informational only, not legal advice. Headline counts reflect all permits Igni has tracked for this jurisdiction; the table shows recent activity. Housing law changes — verify current statutes before relying on this.