10900 Pt Reyes Petaluma Rd
Nicasio 94946 · Nicasio · Unincorporated Marin · Coordinates: 38.10031, -122.73689
Executive Verdict · Public-Records Synthesis
Zoned ARP-60 in Unincorporated Marin and mapped CAL FIRE high fire hazard severity zone (state responsibility area) due diligence; benchmark value $2,147,000 ($1,889,000–$2,405,000).
Upsides & Opportunities
- ✓ Documented permitted upgrades (+$64,144 contributory est.)
Public building records show issued construction/renovation work on this parcel (15 total permits, latest Feb 6, 2026).
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 27% 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
Windows / doors / siding (181062): Issued after 2.4 yr — slower than 90% of windows / doors / siding permits in Unincorporated Marin (median 0d, 90th pct 5d, n=1,476).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (review-time benchmark)
- ! Year 1 Prop 13 tax reset (~$25,141/yr at $2,147,000)
Sale triggers reassessment to 1.00% base + ~0.15% voter debt (~$2,095/mo). Confirm exact Mello-Roos / CFD special assessments on the county tax bill.
Source: CA Const. Art. XIIIA (Prop 13) · County Tax Collector
Parcel & Assessor
- Lot size:
- 17,960,833 sq ft (412.32 ac)
- Assessor use:
- Agricultural - Improved
- Addresses on lot:
- 10900 PT REYES PETALUMA RD
Zoning & Land Use
ARP-60 — Agriculture Residential Planned (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADUCan't tell
Zoned ARP-60 (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 ARP-60 (agricultural), not a single-family residential zone.
- SB 9: split into two lotsUnlikely
Zoned ARP-60 (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 27% of the lot, map Apr 1, 2024); Moderate Fire Hazard Severity Zone (State Responsibility Area) (about 73% of the lot, map Apr 1, 2024)
- FEMA National Flood Hazard Layer
- Zone X: minimal flood hazard (all of the lot) · FIRM panel 06041C0275D, effective May 4, 2009
- CGS Alquist-Priolo Earthquake Fault Zone
- Not in an Alquist-Priolo Earthquake Fault Zone
Surrounding Rent & Value Benchmarks (Public Records)
Range: $1,889,000 – $2,405,000 · Status: Off market
HUD Small Area FMR (ZIP 94946) · FY 2026
Studio $2,050 · 1BR $2,510 · 2BR $2,990 · 3BR $3,730 · 4BR $3,960
Developments Deserving Closer Investigation & Active Area Builders
- Windows / doors / siding (181062) (Issued)On this parcel
Issued after 2.4 yr — slower than 90% of windows / doors / siding permits in Unincorporated Marin (median 0d, 90th pct 5d, n=1,476).
- Solar / battery storage (177166) (Issued)On this parcel
Issued after 2 mo — slower than 90% of solar / battery storage permits in Unincorporated Marin (median 0d, 90th pct 2d, n=2,977).
- Solar / battery storage (177135) (Issued)On this parcel
Issued after 2 mo — slower than 90% of solar / battery storage permits in Unincorporated Marin (median 0d, 90th pct 2d, n=2,977).
- Other (90198) (Applied)On this parcel
Pending in review for 4.3 yr — slower than 90% of other permits in Unincorporated Marin (median 0d, 90th pct 71d, n=1,560).
Entity-resolved builders & contractors in ½ mile: Redhorse Constructors (7 on parcel, 7 in ½ mi · Roof replacement); Rca Electric (3 on parcel, 3 in ½ mi · Solar / battery storage); Peterson Mechanical (1 on parcel, 1 in ½ mi · HVAC / heat pump); Nebel Plumbing (1 on parcel, 1 in ½ mi · Plumbing / water heater / sewer).
Permit & Project History on This Parcel (15 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 181062 | Windows / doors / siding | Issued | Iss. Feb 6, 2026 | $1,842,000 | Structural Remodel Of Barn, Adding Bath; New Windows/Doors, (N) Exterior & Interior Finishes, Elec Upgrade; Concrete Dec… |
| 177166 | Solar / battery storage | Issued | Iss. Jul 24, 2024 | $100,000 | 18.48kw Ground Mount Pv System & Energy Storage System |
| 177135 | Solar / battery storage | Issued | Iss. Jul 19, 2024 | $95,000 | 8.4kw Ground Mount Pv System & Energy Storage System For Entry Gate |
| 176830 | New garage / accessory structure | Issued | Iss. Jun 7, 2024 | $250,000 | Install Prefab Concrete Void Bridge - South Bridge #2 |
| 176829 | New garage / accessory structure |