Pasadena building & ADU permits
Recent permit activity, updated continuously.
Pasadena is one of Los Angeles County's densest ADU markets, working under California's ministerial accessory-dwelling rules. The city publishes a rolling layer of currently-active building permits rather than a historical archive — a small file, but the highest share of accessory-dwelling projects of any source Igni tracks.
Igni is tracking 200 residential and building permits in Pasadena, CA — including 95 classified accessory-dwelling-unit (ADU) filings. The most active ZIP is 91104. The most recent filing Igni tracked was Aug 17, 2026. All records come from City of Pasadena (ArcGIS), an official government open-data feed, and are refreshed continuously.
200
Permits tracked
95
ADU permits
7
Distinct ZIP codes
Aug 17, 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 |
|---|---|---|---|---|
| 91106 | Residential | — | — | Aug 3, 2026 |
| 91104 | Residential | Attached ADU | — | Aug 3, 2026 |
| 91104 | Residential | Detached ADU | — | Aug 4, 2026 |
| 91104 | Residential | Detached ADU | — | Aug 4, 2026 |
| 91104 | Residential | Detached ADU | — | Aug 4, 2026 |
| 91104 | Residential | Detached ADU | — | Aug 4, 2026 |
| 91104 | Residential | Detached ADU | — | Aug 4, 2026 |
| 91107 | Residential | Garage conversion | — | Aug 4, 2026 |
| 91105 | Residential | — | — | Aug 4, 2026 |
| 91104 | Residential | Garage conversion | — | Aug 4, 2026 |
| 91104 | Residential | Attached ADU | — | Aug 4, 2026 |
| 91107 | Residential | — | — | Aug 4, 2026 |
| 91103 | Residential | Detached ADU | — | Aug 4, 2026 |
| 91105 | Residential | — | — | Aug 4, 2026 |
| 91104 | Residential | Garage conversion | — | Aug 4, 2026 |
| 91101 | Residential | Garage conversion | — | Aug 4, 2026 |
| 91106 | Residential | — | — | Aug 5, 2026 |
| 91107 | Residential | Unknown | — | Aug 5, 2026 |
| 91106 | Residential | — | — | Aug 5, 2026 |
| 91104 | Residential | — | — | Aug 5, 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 City of Pasadena (ArcGIS). Public records (CA CPRA).
Nearby cities — California
Learn more about ADUs & building permits
Background reading on accessory dwelling units, building permits, and how Igni turns Pasadena permit records into leads.
Pasadena 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.