9791 State Route 1
Olema 94950 · Unincorporated Marin · Coordinates: 38.03178, -122.79414
Executive Verdict · Public-Records Synthesis
Zoned A60 in Unincorporated Marin and mapped FEMA A flood / CAL FIRE high fire hazard severity zone (state responsibility area) / Alquist-Priolo fault due diligence.
Upsides & Opportunities
- ✓ 4 documented municipal building permits on file
On-parcel permit history is indexed through Jan 23, 2025, letting you verify roof, HVAC, electrical, or structural work against seller disclosures.
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (parcel APN)
Watchouts & Due Diligence
- ! FEMA Special Flood Hazard Area (A, about 8% of the lot of lot)
Zone A: 1% annual chance flood (Special Flood Hazard Area) overlaps this parcel. Expect mandatory flood insurance for federally backed loans and floodplain elevation/mitigation rules for new units or SB 9 applications.
Source: FEMA National Flood Hazard Layer (parcel polygon)
- ! CAL FIRE High Fire Hazard Severity Zone (State Responsibility Area) (about 52% of the lot of lot)
Located in a mapped Fire Hazard Severity Zone. Expect Chapter 7A ignition-resistant building standards, defensible-space inspections, and stricter property insurance underwriting.
Source: CAL FIRE FHSZ (map Apr 1, 2024)
- ! Alquist-Priolo Earthquake Fault Zone (about 49% of the lot of lot)
Intersects a State-mapped surface fault rupture zone. Adding habitable structures or subdividing typically requires a site-specific geologic fault investigation.
Source: California Geological Survey Alquist-Priolo Zones
Parcel & Assessor
- Lot size:
- 22,922,666 sq ft (526.23 ac)
- Assessor use:
- Exemption - Improved
- Addresses on lot:
- 9791 STATE ROUTE 1; 9799 STATE ROUTE 1
Zoning & Land Use
A60 — Agriculture and Conservation (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADUCan't tell
Zoned A60 (agricultural): ADUs are allowed if the zone allows a home, which depends on the zone's rules.
- SB 9: two homes on the lotUnlikely
Zoned A60 (agricultural), not a single-family residential zone.
- SB 9: split into two lotsUnlikely
Zoned A60 (agricultural), 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) (about 52% of the lot, map Apr 1, 2024); Moderate Fire Hazard Severity Zone (State Responsibility Area) (about 48% of the lot, map Apr 1, 2024)
- FEMA National Flood Hazard Layer
- Zone A: 1% annual chance flood (Special Flood Hazard Area) (about 8% of the lot); Zone D: possible but undetermined flood hazard (about 82% of the lot); Zone X: minimal flood hazard (about 10% of the lot) · FIRM panel 06041C0245D, effective May 4, 2009
- CGS Alquist-Priolo Earthquake Fault Zone
- Alquist-Priolo Earthquake Fault Zone (Inverness quadrangle) (about 49% of the lot)
Surrounding Rent & Value Benchmarks (Public Records)
HUD Small Area FMR (ZIP 94950) · FY 2026
Studio $2,050 · 1BR $2,510 · 2BR $2,990 · 3BR $3,730 · 4BR $3,960
Nearby Activity (½ mile radius, since —)
0 active or recent development projects and 0 total building permits recorded within ½ mile.
Developments Deserving Closer Investigation & Active Area Builders
Entity-resolved builders & contractors in ½ mile: Henris Supply (2 on parcel, 2 in ½ mi · Roof replacement); Henris Roofing (1 on parcel, 1 in ½ mi · Roof replacement); Fiona Lee (1 on parcel, 1 in ½ mi · Plumbing / water heater / sewer).
Permit & Project History on This Parcel (4 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B40974 | Roof replacement | Issued | Iss. Jan 23, 2025 | $4,150 | Tear off and dispose of existing roofing down to roofing substrate. Adhere GAF weather Watch Peel and Stick membrane to … |
| B29081 | Roof replacement | Issued | Iss. Mar 15, 2022 | $35,685 | TEAR OFF COMP ROOFS ONLY. PROTECT SINGLE PLY ROOF AREAS. INSTALL NEW COMP SHINGLES WITH TIGER PAW UNDERLAYMANT. ALL NEW … |
| B24194 | Plumbing / water heater / sewer | Issued | Iss. Nov 23, 2020 | $8,000 | Bathroom improvements on 2nd floor: replace (2) shower heads, (2) shower pans, (2) ceiling fans, and apply vinyl floorin… |
| 148090 | Roof replacement | Issued | Iss. Jul 22, 2015 | $42,000 | Reroof |