Parcel Context · Public-Records Property BriefAPN 125-040-37

1285 San Antonio Rd

Petaluma 94952 · Unincorporated Marin · Coordinates: 38.18250, -122.65163

Executive Verdict · Public-Records Synthesis

Zoned A60 in Unincorporated Marin and mapped FEMA A flood / CAL FIRE moderate fire hazard severity zone (state responsibility area) due diligence.

✓ 1 documented municipal building permit on file
On-parcel permit history is indexed through Feb 16, 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)

! FEMA Special Flood Hazard Area (A, about 99% 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 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)

A60 — Agriculture and Conservation (Unincorporated Marin)

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.

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 A: 1% annual chance flood (Special Flood Hazard Area) (about 99% of the lot) · FIRM panel 06041C0150D, effective May 4, 2009
CGS Alquist-Priolo Earthquake Fault Zone: Not in an Alquist-Priolo Earthquake Fault Zone

HUD Small Area FMR (ZIP 94952) · FY 2026

Studio $2,050 · 1BR $2,510 · 2BR $2,990 · 3BR $4,010 · 4BR $4,280

0 active or recent development projects and 1 total building permits recorded within ½ mile.

Entity-resolved builders & contractors in ½ mile: Northern Pacific Power (1 on parcel, 1 in ½ mi · Other).

Record #	Category	Status	Applied / Issued	Valuation	Description
B45889	Other	Issued	Iss. Feb 16, 2026	$51,492	—

Executive Verdict · Public-Records Synthesis

Zoned A60 in Unincorporated Marin and mapped FEMA A flood / CAL FIRE moderate fire hazard severity zone (state responsibility area) due diligence.

✓ 1 documented municipal building permit on file
On-parcel permit history is indexed through Feb 16, 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)

! FEMA Special Flood Hazard Area (A, about 99% 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 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)

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

Moderate Fire Hazard Severity Zone (State Responsibility Area) (all of the lot, map Apr 1, 2024)

FEMA National Flood Hazard Layer

Zone A: 1% annual chance flood (Special Flood Hazard Area) (about 99% of the lot) · FIRM panel 06041C0150D, effective May 4, 2009

CGS Alquist-Priolo Earthquake Fault Zone

Not in an Alquist-Priolo Earthquake Fault Zone

Record #