203 Marin Ave
Mill Valley 94941 · Tamalpais · Unincorporated Marin · Coordinates: 37.87612, -122.52688
Parcel & Assessor
- Lot size:
- 28,401 sq ft (0.65 ac)
- Assessor use:
- Tax Exempt
- Addresses on lot:
- 203 MARIN AVE
Zoning & Land Use
OA — Open Area (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADUUnlikely
Zoned OA (open space): the zone doesn't allow homes, so state ADU rules don't apply.
- SB 9: two homes on the lotUnlikely
Zoned OA (open space), not a single-family residential zone.
- SB 9: split into two lotsUnlikely
Zoned OA (open space), not a single-family residential zone.
Mapped Hazard Zones on This Lot
- CAL FIRE Fire Hazard Severity Zone
- High Fire Hazard Severity Zone (State Responsibility Area) (all of the lot, map Apr 1, 2024)
- FEMA National Flood Hazard Layer
- Zone AE: 1% annual chance flood (Special Flood Hazard Area) (about 24% of the lot); Zone AE: regulatory floodway (Special Flood Hazard Area) (about 60% of the lot); Zone X: minimal flood hazard (about 7% of the lot); Zone X: 0.2% annual chance flood hazard (shaded X) (about 8% of the lot) · FIRM panel 06041C0469F, effective March 16, 2016
- CGS Alquist-Priolo Earthquake Fault Zone
- Not in an Alquist-Priolo Earthquake Fault Zone
Surrounding Rent & Value Benchmarks (Public Records)
Range: $2,028,000 – $2,580,000 · Status: Off market
HUD Small Area FMR (ZIP 94941) · FY 2026
Studio $2,730 · 1BR $3,270 · 2BR $3,960 · 3BR $5,060 · 4BR $5,240
Developments Deserving Closer Investigation & Active Area Builders
- New commercial building at 203 Marin Ave (Applied)On this parcel
Active in "Applied" for 9.6 yr (first record Mar 20, 2017) with no new permit activity recorded in 9.6 yr.
- New home at 535 Tennessee Valley Rd (adu 531) (Issued)0.27 mi S
Active in "Issued" for 6 yr (first record Oct 29, 2020) with no new permit activity recorded in 4 yr. High-impact scale (1 housing unit, $800,000 declared valuation across 1 permit).
- New commercial building at 201 Flamingo Rd (aka 205) (Issued)0.34 mi N
Active in "Issued" for 11.7 yr (first record Feb 17, 2015) with no new permit activity recorded in 11.2 yr. High-impact scale ($3,938,400 declared valuation across 3 permits).
- New home at 334 Dolan Ave (Issued)0.37 mi NW
Active in "Issued" for 8.1 yr (first record Sep 5, 2018) with no new permit activity recorded in 7.9 yr. High-impact scale (1 housing unit, $759,000 declared valuation across 1 permit).
Permit & Project History on This Parcel (2 permits, 1 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B20223 | Electrical / panel | Issued | Iss. Oct 29, 2019 | $9,000 | ARB Inc to install approx. 100 Ft of gas house line for PG&E meter relocation — New Gas Service |
| 78928 | New commercial / non-residential building | Applied | App. Mar 20, 2017 | $250,000 | Exp Comm Kit And Bathroom For Ada Upgrades***Expired T.D. 4/3/17 Plans Tossed 12/5/18 Work Not Being Done |