San Diego building & ADU permits
Recent permit activity, updated continuously.
San Diego, California's second-largest city, publishes a bulk open-data export under an explicit public-domain (PDDL) license — among the cleanest sourcing terms of any jurisdiction Igni tracks. Many records lack an address ZIP, so Igni recovers it from each permit's coordinates, then applies SB-9/SB-10 flags and typed ADU classification.
Igni is tracking 12,054 residential and building permits in San Diego, CA — including 515 classified accessory-dwelling-unit (ADU) filings. The most active ZIP is 92101. The most recent filing Igni tracked was Sep 18, 2026. All records come from data.sandiego.gov bulk open data (CSV), an official government open-data feed, and are refreshed continuously.
12054
Permits tracked
515
ADU permits
31
Distinct ZIP codes
Sep 18, 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 |
|---|---|---|---|---|
| 92101 | Other | — | — | Aug 14, 2026 |
| 92103 | Other | — | — | Aug 14, 2026 |
| 92037 | Other | — | — | Jun 29, 2026 |
| 92014 | Commercial | — | — | Mar 30, 2026 |
| 92126 | Residential | — | $9,278 | Sep 22, 2025 |
| 92122 | Residential | — | $32,968 | Aug 3, 2026 |
| 92108 | Commercial | — | — | May 12, 2026 |
| 92108 | Commercial | — | $81,328 | May 12, 2026 |
| 92108 | Commercial | — | — | May 12, 2026 |
| 92104 | Other | — | — | Jul 24, 2026 |
| 92101 | Commercial | — | — | May 21, 2026 |
| 92122 | Commercial | — | — | Aug 12, 2026 |
| 92108 | Commercial | — | — | Apr 16, 2026 |
| 92111 | Residential | — | — | Aug 6, 2026 |
| 92037 | Commercial | — | $618,176 | May 15, 2026 |
| 92103 | Commercial | — | — | Oct 15, 2025 |
| 92116 | Other | — | — | Aug 17, 2026 |
| 92107 | Residential | — | $224,649 | Nov 21, 2024 |
| 92107 | Residential | — | $368,781 | Nov 22, 2024 |
| 92109 | Residential | — | — | Jul 9, 2025 |
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.
San Diego ADU rules
San Diego permits accessory dwelling units under California's ministerial, by-right framework — detached and attached units, conversions, and junior ADUs — with no owner-occupancy requirement for standard ADUs (a junior ADU still requires it) and a 60-day decision deadline. A standard ADU is generally capped at 1,200 square feet, while a conversion of existing space is exempt from that cap.
The city is best known for its Accessory Dwelling Unit Bonus Program, a local incentive layered on top of the state rules: for each income-restricted, deed-restricted affordable ADU a homeowner builds, the program lets them add an additional market-rate 'bonus' ADU, with the most generous allowances near transit. The program drove a surge of permits, and in 2025 the city refined it — adding per-lot caps that scale with lot size and narrowing where it applies — so the exact number of units a given parcel can support now depends on its size and location.
Different rules can apply inside San Diego's Coastal Overlay Zone, where some recent changes await Coastal Commission certification. The city also offers an expedited path for pre-approved ADU plans under California's AB 1332.
This is an informational summary — verify current rules with the city's planning/permitting department; not legal advice.
See also: California ADU law and what is an ADU?
Data source
Sourced from data.sandiego.gov bulk open data (CSV). PDDL — Open Data Commons Public Domain.
Nearby cities — California
Learn more about ADUs & building permits
Background reading on accessory dwelling units, building permits, and how Igni turns San Diego permit records into leads.
San Diego permit data — FAQ
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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.