10189 State Route 1
Olema 94950 · Olema · Unincorporated Marin · Coordinates: 38.04449, -122.79073
Executive Verdict · Public-Records Synthesis
Zoned C-VCR in Unincorporated Marin with likely ministerial ADU eligibility and mapped FEMA AE flood / CAL FIRE moderate fire hazard severity zone (state responsibility area) / Alquist-Priolo fault due diligence; benchmark value $1,250,000 ($1,063,000–$1,438,000).
Upsides & Opportunities
- ✓ Ministerial ADU / JADU pathway likely eligible
Zone C-VCR allows residential use qualifying for ministerial ADU review under state law.
Source: Unincorporated Marin zoning · CA Gov. Code 66314
- ✓ 4 documented municipal building permits on file
On-parcel permit history is indexed through Nov 26, 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 (AE, about 48% of the lot of lot)
Zone AE: 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 Moderate Fire Hazard Severity Zone (State Responsibility Area) (all 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 (all 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
- ! Delayed or open permit activity on this parcel
Remodel / interior alteration (93576): Pending in review for 14 mo (5.0× the 83d median) — slower than 90% of remodel / interior alteration permits in Unincorporated Marin (median 83d, 90th pct 266d, n=1,054).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (review-time benchmark)
Parcel & Assessor
- Lot size:
- 155,988 sq ft (3.58 ac)
- Assessor use:
- Exemption - Improved
- Addresses on lot:
- 10189 STATE ROUTE 1
Zoning & Land Use
C-VCR — Village Commercial Residential (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned C-VCR (mixed use): state law allows ADUs where homes are allowed. On a multifamily lot the state allowance is different: ADUs in non-living space of the building, plus up to eight detached ADUs.
- SB 9: two homes on the lotUnlikely
Zoned C-VCR (mixed use), not a single-family residential zone.
- SB 9: split into two lotsUnlikely
Zoned C-VCR (mixed use), not a single-family residential zone.
Mapped Hazard Zones on This Lot
- CAL FIRE Fire Hazard Severity Zone
- Moderate 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 48% of the lot); Zone X: minimal flood hazard (about 52% of the lot) · FIRM panel 06041C0241D, effective May 4, 2009
- CGS Alquist-Priolo Earthquake Fault Zone
- Alquist-Priolo Earthquake Fault Zone (Inverness quadrangle) (all of the lot)
Surrounding Rent & Value Benchmarks (Public Records)
Range: $1,063,000 – $1,438,000 · Status: Off market
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 November 2024)
0 active or recent development projects and 7 total building permits recorded within ½ mile.
- Additions & renovations1 permit
- Building systems5 permits
Developments Deserving Closer Investigation & Active Area Builders
- Remodel / interior alteration (93576) (Applied)On this parcel
Pending in review for 14 mo (5.0× the 83d median) — slower than 90% of remodel / interior alteration permits in Unincorporated Marin (median 83d, 90th pct 266d, n=1,054).
- New garage / accessory structure (92734) (Applied)On this parcel
Pending in review for 2 yr (4.5× the 164d median) — slower than 90% of new garage / accessory structure permits in Unincorporated Marin (median 164d, 90th pct 485d, n=356).
Entity-resolved builders & contractors in ½ mile: Tom Mccafferty (1 on parcel, 1 in ½ mi · Roof replacement); Jeff Casto Construction (1 on parcel, 1 in ½ mi · Electrical / panel); Bic Construction (2 in ½ mi · Commercial tenant improvement); Diamond Engineering Services Dba Des Builders (1 in ½ mi · New garage / accessory structure).
Permit & Project History on This Parcel (4 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B44548 | Roof replacement | Issued | Iss. Nov 26, 2025 | $444,000 | Replacing like for like roofing, replacing siding with Hardie plank, replacing windows with double pane units, upgrading… |
| 93576 | Remodel / interior alteration | Applied | App. Sep 24, 2025 | $750,000 | Non-Structural Remodel - Reduce Bedroom Number, Elec And Mech Upgrades (Temp Housing - Emergency Shelter Crisis Declarat… |
| 92734 | New garage / accessory structure | Applied | App. Oct 29, 2024 | $250,000 | Cell Site Modification: Extend Steeple Upward; (N) Equipment Enclosure @ Ground Level - A T & T |
| B29780 | Electrical / panel | Issued | Iss. May 17, 2022 | $2,500 | ATTENTION!! This main panel should be replaced ASAP!! It is a 100 AMP underground service with a meter. Damage to bus ba… |