45 Horseshoe Hill Rd
Bolinas 94924 · Bolinas · Unincorporated Marin · Coordinates: 37.92095, -122.69669
Executive Verdict · Public-Records Synthesis
Zoned C-ARP-5 in Unincorporated Marin and mapped CAL FIRE high fire hazard severity zone (state responsibility area) / Alquist-Priolo fault due diligence; benchmark value $1,968,000 ($1,732,000–$2,204,000).
Upsides & Opportunities
- ✓ 2 documented municipal building permits on file
On-parcel permit history is indexed through Sep 3, 2026, 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
- ! Mapped flood awareness zone (Zone X: minimal flood hazard)
all of the lot of the parcel intersects Zone X: minimal flood hazard. Outside mandatory federal SFHA insurance rules, but check local drainage and finished-floor requirements.
Source: FEMA National Flood Hazard Layer (parcel polygon)
- ! CAL FIRE High Fire Hazard Severity Zone (State Responsibility Area) (about 44% 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
- ! 1 slow or stalled nearby project within ½ mile
Closest lead: New home at 75 Horseshoe Hill Rd (0.11 mi NW, issued). Inspect timeline history before assuming near-term completion.
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · HCD APR (½-mile radius)
Parcel & Assessor
- Lot size:
- 218,976 sq ft (5.03 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 45 HORSESHOE HILL RD
Zoning & Land Use
C-ARP-5 — Agriculture Residential Planned (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADUCan't tell
Zoned C-ARP-5 (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 C-ARP-5 (agricultural), not a single-family residential zone.
- SB 9: split into two lotsUnlikely
Zoned C-ARP-5 (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 44% of the lot, map Apr 1, 2024); Very High Fire Hazard Severity Zone (State Responsibility Area) (about 56% of the lot, map Apr 1, 2024)
- FEMA National Flood Hazard Layer
- Zone X: minimal flood hazard (all of the lot) · FIRM panel 06041C0440E, effective August 15, 2017
- CGS Alquist-Priolo Earthquake Fault Zone
- Alquist-Priolo Earthquake Fault Zone (Bolinas quadrangle) (all of the lot)
Surrounding Rent & Value Benchmarks (Public Records)
Range: $1,732,000 – $2,204,000 · Status: Off market
HUD Small Area FMR (ZIP 94924) · FY 2026
Studio $2,050 · 1BR $2,510 · 2BR $2,990 · 3BR $3,730 · 4BR $3,960
Developments Deserving Closer Investigation & Active Area Builders
- New home at 75 Horseshoe Hill Rd (Issued)0.11 mi NW
Active in "Issued" for 2.5 yr (first record May 30, 2024) with no new permit activity recorded in 2.2 yr.
Entity-resolved builders & contractors in ½ mile: Gvd Renovations (1 on parcel, 1 in ½ mi · Windows / doors / siding); Sunshine Roofing (1 on parcel, 1 in ½ mi · Roof replacement); Owner Builder (6 in ½ mi · Accessory dwelling unit (new or conversion)); Precision Build (5 in ½ mi · New garage / accessory structure); Seegert Construction (4 in ½ mi · New garage / accessory structure).
Permit & Project History on This Parcel (2 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B48209 | Windows / doors / siding | Issued | Iss. Sep 3, 2026 | $92,176 | Siding Replacement, Non-structural Door/Window Replacement |
| B38237 | Roof replacement | Issued | Iss. May 31, 2024 | $15,000 | Reroof home, tear off existing roof layer, install new GAF comp shingle on 1,300 sq. ft, haul away debris. — ReRoofing |