550 Nicasio Valley Rd
Nicasio 94946 · Nicasio · Unincorporated Marin · Coordinates: 38.02761, -122.66058
Executive Verdict · Public-Records Synthesis
Zoned ARP-40 in Unincorporated Marin and mapped CAL FIRE high fire hazard severity zone (state responsibility area) due diligence; benchmark value $2,107,000 ($1,854,000–$2,360,000).
Upsides & Opportunities
- ✓ Documented permitted upgrades (+$24,048 contributory est.)
Public building records show issued construction/renovation work on this parcel (3 total permits, latest Dec 8, 2025).
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)
- ! Delayed or open permit activity on this parcel
Solar / battery storage (174512): Issued after 12 mo — slower than 90% of solar / battery storage permits in Unincorporated Marin (median 0d, 90th pct 2d, n=2,977).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (review-time benchmark)
- ! 1 slow or stalled nearby project within ½ mile
Closest lead: New commercial building at 900 Nicasio Valley Rd (0.49 mi NW, issued). Inspect timeline history before assuming near-term completion.
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · HCD APR (½-mile radius)
Parcel & Assessor
- Lot size:
- 1,297,870 sq ft (29.79 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 550 NICASIO VALLEY RD
Zoning & Land Use
ARP-40 — Agriculture Residential Planned (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADUCan't tell
Zoned ARP-40 (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-40 (agricultural), not a single-family residential zone.
- SB 9: split into two lotsUnlikely
Zoned ARP-40 (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 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: $1,854,000 – $2,360,000 · 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
- Solar / battery storage (174512) (Issued)On this parcel
Issued after 12 mo — slower than 90% of solar / battery storage permits in Unincorporated Marin (median 0d, 90th pct 2d, n=2,977).
- New commercial building at 900 Nicasio Valley Rd (Issued)0.49 mi NW
Active in "Issued" for 9.3 yr (first record Jul 20, 2017) with no new permit activity recorded in 9.1 yr.
Entity-resolved builders & contractors in ½ mile: Earthwise Energy Solutions (2 on parcel, 2 in ½ mi · Electrical / panel); Electrician (1 on parcel, 1 in ½ mi · Solar / battery storage); Hennessey Construction (1 in ½ mi · Remodel / interior alteration); Sc Live (1 in ½ mi · New commercial / non-residential building).
Permit & Project History on This Parcel (3 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B44752 | Solar / battery storage | Issued | Iss. Dec 8, 2025 | $19,000 | Installing Battery back up STORAGE CHARGING CAPACITY 46.8 kWh |
| B35058 | Electrical / panel | Issued | Iss. Aug 14, 2023 | $4,214 | Main Service Panel Upgrade- remove existing, install new 225A panel with a 200A breaker. — Service Upgrade |
| 174512 | Solar / battery storage | Issued | Iss. Jul 17, 2023 | $134,000 | 31.60kw Ground Mount Photovoltaic |