105 Wilson Hill Rd
Petaluma 94952 · Unincorporated Marin · Coordinates: 38.19196, -122.70943
Executive Verdict · Public-Records Synthesis
Zoned A20 in Unincorporated Marin and mapped CAL FIRE moderate fire hazard severity zone (state responsibility area) due diligence.
Upsides & Opportunities
- ✓ 3 documented municipal building permits on file
On-parcel permit history is indexed through Sep 30, 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
- ! 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 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)
Parcel & Assessor
- Lot size:
- 206,649 sq ft (4.74 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 105 WILSON HILL RD
Zoning & Land Use
A20 — Agriculture and Conservation (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADUCan't tell
Zoned A20 (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 A20 (agricultural), not a single-family residential zone.
- SB 9: split into two lotsUnlikely
Zoned A20 (agricultural), 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 X: minimal flood hazard (all of the lot) · FIRM panel 06041C0150D, effective May 4, 2009
- CGS Alquist-Priolo Earthquake Fault Zone
- Not in an Alquist-Priolo Earthquake Fault Zone
Surrounding Rent & Value Benchmarks (Public Records)
HUD Small Area FMR (ZIP 94952) · FY 2026
Studio $2,050 · 1BR $2,510 · 2BR $2,990 · 3BR $4,010 · 4BR $4,280
Nearby Activity (½ mile radius, since November 2024)
0 active or recent development projects and 4 total building permits recorded within ½ mile.
- Additions & renovations1 permit
- Building systems2 permits
- Repairs1 permit
Developments Deserving Closer Investigation & Active Area Builders
Entity-resolved builders & contractors in ½ mile: Richard Heath And Associates (1 on parcel, 1 in ½ mi · Solar / battery storage); Sunshine Roofing (1 on parcel, 1 in ½ mi · Roof replacement); Owner (3 in ½ mi · New garage / accessory structure).
Permit & Project History on This Parcel (3 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B44109 | Solar / battery storage | Issued | Iss. Sep 30, 2025 | $15,000 | INSTALLATION OF ONE 13.5 KWH (ESS) ENERGY STORAGE SYSTEM, AND ASSOCIATED HARDWARE TO THE MAIN DWELLING. |
| 166245 | Solar / battery storage | Issued | Iss. Nov 12, 2020 | $32,000 | Photovoltaic 10.88kw |
| B23757 | Roof replacement | Issued | Iss. Oct 6, 2020 | $9,999 | Tear off one existing layer of roof, Install new 30 year GAF Timberline HD roof. 30 squares. Haul away debris. — ReRoofi… |