20 Mesa Rd
Bolinas 94924 · Bolinas · Unincorporated Marin · Coordinates: 37.91230, -122.69185
Executive Verdict · Public-Records Synthesis
Zoned C-ARP-10 in Unincorporated Marin and mapped CAL FIRE high fire hazard severity zone (state responsibility area) / Alquist-Priolo fault due diligence; benchmark value $2,193,000 ($1,930,000–$2,456,000).
Upsides & Opportunities
- ✓ 2 documented municipal building permits on file
On-parcel permit history is indexed through Aug 30, 2022, 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) (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
Roof replacement (90263): Pending in review for 4.2 yr — slower than 90% of roof replacement permits in Unincorporated Marin (median 0d, 90th pct 0d, n=3,663).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (review-time benchmark)
Parcel & Assessor
- Lot size:
- 32,539 sq ft (0.75 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 20 MESA RD
Zoning & Land Use
C-ARP-10 — Agriculture Residential Planned (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADUCan't tell
Zoned C-ARP-10 (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-10 (agricultural), not a single-family residential zone.
- SB 9: split into two lotsUnlikely
Zoned C-ARP-10 (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) (all 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: $1,930,000 – $2,456,000 · 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
- Roof replacement (90263) (Applied)On this parcel
Pending in review for 4.2 yr — slower than 90% of roof replacement permits in Unincorporated Marin (median 0d, 90th pct 0d, n=3,663).
- New commercial building at 72 Wharf Rd (Issued)0.47 mi E
Active in "Issued" for 5.5 yr (first record May 13, 2021) with no new permit activity recorded in 3.1 yr. High-impact scale ($1,980,000 declared valuation across 2 permits).
- Demolition at 32 Crescente Ave (Applied)0.46 mi SE
In "Applied" for 11.1 yr (since Oct 22, 2015), exceeding the 55d median and 261d 90th percentile for demolition permits in Unincorporated Marin (n=130).
- New home at 31 Wharf Rd Bldg C D (Issued)0.35 mi E
Active in "Issued" for 20 mo (first record Mar 19, 2025) with no new permit activity recorded in 10 mo. High-impact scale ($2,500,000 declared valuation across 2 permits).
Entity-resolved builders & contractors in ½ mile: Aussie Roofing (1 on parcel, 1 in ½ mi · Roof replacement); Owner Builder (4 in ½ mi · Remodel / interior alteration); Owner (4 in ½ mi · Commercial tenant improvement); Wick Brothers Construction (3 in ½ mi · Accessory dwelling unit (new or conversion)); Arntz Builders (1 in ½ mi · New commercial / non-residential building).
Permit & Project History on This Parcel (2 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B30891 | Roof replacement | Issued | Iss. Aug 30, 2022 | $27,500 | Re Roof Class 'A' FR Comp Shingle w/Tear-Off, Ridged Insulation, Plywood. — ReRoofing |
| 90263 | Roof replacement | Applied | App. Aug 29, 2022 | $27,500 | Reroof |