Marin County building & ADU permits
Recent permit activity, updated continuously.
Marin County sits directly north of the Golden Gate and permits for its unincorporated communities — San Anselmo, Kentfield, Woodacre and the surrounding valleys. California's statewide ministerial ADU rules apply here in full, and the county's permit feed carries the contractor name and licence number alongside each record.
Igni is tracking 200 residential and building permits in Marin County, CA. The most active ZIP is 94903. The most recent filing Igni tracked was Aug 15, 2026. All records come from data.marincounty.gov (Socrata), an official government open-data feed, and are refreshed continuously.
200
Permits tracked
0
ADU permits
21
Distinct ZIP codes
Aug 15, 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 |
|---|---|---|---|---|
| 94970 | Residential | — | $4,000 | Jul 31, 2026 |
| 94941 | Residential | — | $5,000 | Jul 31, 2026 |
| 94904 | Residential | — | $10,000 | Jul 31, 2026 |
| 94956 | Residential | — | $5,247 | Jul 31, 2026 |
| 94903 | Residential | — | $40,000 | Jul 31, 2026 |
| 94903 | Residential | — | $4,460 | Jul 31, 2026 |
| 94941 | Residential | — | $18,970 | Jul 31, 2026 |
| 94956 | Residential | — | $17,100 | Jul 31, 2026 |
| 94941 | Commercial | — | $25,000 | Aug 1, 2026 |
| 94941 | Residential | — | $9,900 | Jul 31, 2026 |
| 94901 | Residential | — | $43,920 | Aug 3, 2026 |
| 94941 | Residential | — | $10,100 | Aug 3, 2026 |
| 94930 | Residential | — | $2,800 | Aug 3, 2026 |
| 94956 | Residential | — | $10,299 | Aug 3, 2026 |
| 94949 | Residential | — | $20,950 | Aug 3, 2026 |
| 94941 | Residential | — | $15,000 | Aug 3, 2026 |
| 94941 | Commercial | — | $38,000 | Aug 3, 2026 |
| 94941 | Residential | — | $3,500 | Aug 3, 2026 |
| 94941 | Commercial | — | $76,000 | Aug 3, 2026 |
| 94965 | Residential | — | $4,300 | Aug 3, 2026 |
Top ZIP codes by recent activity
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 data.marincounty.gov (Socrata). ODbL 1.0 — attribution required.
Attribution: © County of Marin, CA (CC BY 4.0)
Nearby cities — California
Learn more about ADUs & building permits
Background reading on accessory dwelling units, building permits, and how Igni turns Marin County permit records into leads.
Marin County permit data — FAQ
Where does Igni get Marin County permit data?
How fresh is Marin County permit data?
Does Marin County allow accessory dwelling units (ADUs)?
Get permit leads — Marin County
Fresh, filterable residential and ADU permit leads from Marin 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.