2400 Fallon Two Rock Rd
Petaluma 94952 · Unincorporated Marin · Coordinates: 38.27666, -122.87676
Executive Verdict · Public-Records Synthesis
Zoned A60 in Unincorporated Marin and mapped CAL FIRE moderate fire hazard severity zone (state responsibility area) due diligence.
Upsides & Opportunities
- ✓ 13 documented municipal building permits on file
On-parcel permit history is indexed through Jun 24, 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 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)
- ! Delayed or open permit activity on this parcel
Other (181993): Issued after 3 mo — slower than 90% of other permits in Unincorporated Marin (median 0d, 90th pct 71d, n=1,562).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (review-time benchmark)
Parcel & Assessor
- Lot size:
- 2,961,252 sq ft (67.98 ac)
- Assessor use:
- Agricultural - Improved
- Addresses on lot:
- 2400 FALLON TWO ROCK RD
Zoning & Land Use
A60 — Agriculture and Conservation (Unincorporated Marin)
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 X: minimal flood hazard (all of the lot) · FIRM panel 06041C0045D, 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 9 total building permits recorded within ½ mile.
- Building systems1 permit
- Other8 permits
Developments Deserving Closer Investigation & Active Area Builders
- Other (181993) (Issued)On this parcel
Issued after 3 mo — slower than 90% of other permits in Unincorporated Marin (median 0d, 90th pct 71d, n=1,562).
- Other (181992) (Issued)On this parcel
Issued after 3 mo — slower than 90% of other permits in Unincorporated Marin (median 0d, 90th pct 71d, n=1,562).
- Other (181991) (Issued)On this parcel
Issued after 3 mo — slower than 90% of other permits in Unincorporated Marin (median 0d, 90th pct 71d, n=1,562).
- Other (181990) (Issued)On this parcel
Issued after 4 mo — slower than 90% of other permits in Unincorporated Marin (median 0d, 90th pct 71d, n=1,562).
Entity-resolved builders & contractors in ½ mile: Mastec Communicaitons Group (4 on parcel, 4 in ½ mi · Other); Owner Builder (2 on parcel, 2 in ½ mi · Other); Owner (1 on parcel, 1 in ½ mi · Other); Entwisle Electric (1 on parcel, 1 in ½ mi · Electrical / panel).
Permit & Project History on This Parcel (13 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 181993 | Other | Issued | Iss. Jun 24, 2026 | $275,000 | Replace (E) Chicken Barn - Ag Exempt |
| 181992 | Other | Issued | Iss. Jun 24, 2026 | $275,000 | (N) Chicken Barn With Veranda - Ag Exempt |
| 181991 | Other | Issued | Iss. Jun 24, 2026 | $275,000 | (N) Chicken Barn With Veranda - Ag Exempt |
| 181990 | Other | Issued | Iss. Jun 24, 2026 | $275,000 | (N) Chicken Barn With Veranda - Ag Exempt |
| B45476 | Electrical / panel | Issued | Iss. Jan 14, 2026 | $8,000 | To replace the existing 600a switch gear with a new 600a switch gear — Service Upgrade |