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 1,698 residential and building permits in Los Angeles County, CA — including 270 classified accessory-dwelling-unit (ADU) filings. The most active ZIP is 91001. The most recent filing Igni tracked was Oct 28, 2026. All records come from LA County EPIC-LA (ArcGIS), an official government open-data feed, and are refreshed continuously.
1698
Permits tracked
270
ADU permits
61
Distinct ZIP codes
Oct 28, 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 |
|---|---|---|---|---|
| 91001 | Residential | — | $3,000 | Oct 26, 2026 |
| 90001 | Residential | — | $8,500 | Oct 27, 2026 |
| 91001 | Residential | — | $0 | Oct 28, 2026 |
| 91001 | Residential | — | $800,000 | Oct 28, 2026 |
| 91001 | Residential | Unknown | $86,200 | Oct 28, 2026 |
| 90001 | Residential | — | $3,000 | Oct 28, 2026 |
| 90022 | Residential | — | $7,600 | Oct 28, 2026 |
| 91006 | Residential | — | $5,000 | Oct 28, 2026 |
| 91001 | Residential | Unknown | $200,000 | Oct 28, 2026 |
| 90744 | Commercial | — | $90,000 | Oct 28, 2026 |
| 90290 | Residential | Unknown | $12,000 | Oct 28, 2026 |
| 90063 | Commercial | — | $4,000 | Oct 28, 2026 |
| 91214 | Residential | — | $6,000 | Oct 28, 2026 |
| 91001 | Residential | — | — | Oct 28, 2026 |
| 91744 | Residential | — | $5,000 | Oct 28, 2026 |
| 91001 | Residential | — | $1 | Oct 28, 2026 |
| 91744 | Residential | — | $4,200 | Oct 28, 2026 |
| 90255 | Residential | — | $412,000 | Oct 28, 2026 |
| 90248 | Residential | — | $15,000 | Oct 28, 2026 |
| 91745 | Residential | — | $12,000 | Oct 28, 2026 |
Top ZIP codes by recent activity
ADU types in the recent set
Permit activity in Los Angeles County
Igni counted 10,504 permits issued in Los Angeles County over the last 12 months (Oct 2025 – Sep 2026) — down 7.1% on the 11,309 in the 12 months before. The forecast expects about 5,250 over the next 6 months.
Forecast: trailing mean, typical error ±11% in backtests one to six months ahead. How we forecast
| Permit type | Last 12 months | Year over year | Forecast, next 6 months |
|---|---|---|---|
| All permits | 10,504 | Down 7.1% | ≈ 5,250 |
| Residential building | 9,912 | Down 5.3% | ≈ 4,956 |
| Commercial building | 507 | Down 27.6% | ≈ 261 |
| Trade (electrical, plumbing, mechanical) | 85 | Down 41.4% | — |
| ADU | 1,758 | Up 52.6% | ≈ 984 |
Monthly figures
| Month | Permits | 10th–90th percentile |
|---|---|---|
| Oct 2023 | 1,094 | — |
| Nov 2023 | 905 | — |
| Dec 2023 | 647 | — |
| Jan 2024 | 888 | — |
| Feb 2024 | 739 | — |
| Mar 2024 | 794 | — |
| Apr 2024 | 1,133 | — |
| May 2024 | 941 | — |
| Jun 2024 | 895 | — |
| Jul 2024 | 954 | — |
| Aug 2024 | 906 | — |
| Sep 2024 | 890 | — |
| Oct 2024 | 1,079 | — |
| Nov 2024 | 901 | — |
| Dec 2024 | 879 | — |
| Jan 2025 | 819 | — |
| Feb 2025 | 911 | — |
| Mar 2025 | 1,023 | — |
| Apr 2025 | 1,217 | — |
| May 2025 | 1,043 | — |
| Jun 2025 | 897 | — |
| Jul 2025 | 846 | — |
| Aug 2025 | 821 | — |
| Sep 2025 | 873 | — |
| Oct 2025 | 953 | — |
| Nov 2025 | 701 | — |
| Dec 2025 | 748 | — |
| Jan 2026 | 839 | — |
| Feb 2026 | 840 | — |
| Mar 2026 | 1,038 | — |
| Apr 2026 | 1,010 | — |
| May 2026 | 793 | — |
| Jun 2026 | 964 | — |
| Jul 2026 | 1,000 | — |
| Aug 2026 | 802 | — |
| Sep 2026 | 816 | — |
| Oct 2026 (forecast) | ≈ 875 | 676–1,009 |
| Nov 2026 (forecast) | ≈ 875 | 698–1,006 |
| Dec 2026 (forecast) | ≈ 875 | 709–1,002 |
| Jan 2027 (forecast) | ≈ 875 | 767–991 |
| Feb 2027 (forecast) | ≈ 875 | 767–976 |
| Mar 2027 (forecast) | ≈ 875 | 764–973 |
Counts are permits issued per calendar month as Los Angeles County publishes them to its open-data feed — not a complete census; a change in what the city publishes moves them too. The current month is left out, and the most recent months are provisional. A forecast is a statistical estimate with a range, not a prediction for any project. Informational only.
How long do permits take in Los Angeles County?
Based on 36,559 Los Angeles County permits applied for between Nov 2023 and Aug 2026, the typical (median) permit was issued 73 days after application, and the middle half of permits took 5–345 days.
| Permit type | Median | Typical range | Permits |
|---|---|---|---|
| All permits | 73 days | 5–345 days | 36,559 |
| Residential building | 62 days | 4–329 days | 34,135 |
| Commercial building | 204 days | 71–614 days | 1,993 |
| Trade (electrical, plumbing, mechanical) | 112 days | — | 431 |
| ADU | 300 days | 163–929 days | 5,201 |
Typical, not guaranteed: individual permits vary with project scope, application completeness and plan-review workload. Days are calendar days from application to issuance; applications still pending are counted as not-yet-issued rather than dropped. Informational only, not legal advice. How we calculate approval times.
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
Where does Igni get Los Angeles County permit data?
How fresh is Los Angeles County permit data?
How long does it take to get a building permit in Los Angeles County?
Is construction activity growing in Los Angeles County?
Does Los Angeles County allow accessory dwelling units (ADUs)?
Get permit leads — Los Angeles County
Fresh, filterable residential and ADU permit leads from Los Angeles County — delivered before your competitors even know.
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.