52 W Nicasio Rd
San Geronimo 94963 · San Geronimo Valley · Unincorporated Marin · Coordinates: 38.02176, -122.67022
Executive Verdict · Public-Records Synthesis
Zoned ARP-20-SGV in Unincorporated Marin and mapped CAL FIRE high fire hazard severity zone (state responsibility area) due diligence; benchmark value $1,408,000 ($1,239,000–$1,577,000).
Upsides & Opportunities
- ✓ Documented permitted upgrades (+$68,308 contributory est.)
Public building records show issued construction/renovation work on this parcel (6 total permits, latest Sep 30, 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) (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 (172685): Issued after 5 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 home at 80 W Nicasio Rd (420 ft SW, applied). 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:
- 88,688 sq ft (2.04 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 52 W NICASIO RD
Zoning & Land Use
ARP-20-SGV — Agriculture Residential Planned (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADUCan't tell
Zoned ARP-20-SGV (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-20-SGV (agricultural), not a single-family residential zone.
- SB 9: split into two lotsUnlikely
Zoned ARP-20-SGV (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: $1,239,000 – $1,577,000 · Status: Off market
HUD Small Area FMR (ZIP 94963) · FY 2026
Studio $2,500 · 1BR $3,000 · 2BR $3,630 · 3BR $4,630 · 4BR $4,800
Developments Deserving Closer Investigation & Active Area Builders
- Solar / battery storage (172685) (Issued)On this parcel
Issued after 5 mo — slower than 90% of solar / battery storage permits in Unincorporated Marin (median 0d, 90th pct 2d, n=2,977).
- New home at 80 W Nicasio Rd (Applied)420 ft SW
In "Applied" for 5.5 yr (since May 18, 2021), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
- New home at 98 W Nicasio Rd (Finaled / completed)0.14 mi SW
High-impact scale (1 housing unit, $1,181,600 declared valuation across 1 permit).
Entity-resolved builders & contractors in ½ mile: Larkspur Builders (3 on parcel, 3 in ½ mi · Electrical / panel); Luminalt Energy (2 on parcel, 2 in ½ mi · Solar / battery storage); Apollo Building And Roofing Group (1 on parcel, 1 in ½ mi · Roof replacement); Summit Professional Builders (2 in ½ mi · New garage / accessory structure); Valentine Builders (1 in ½ mi · Remodel / interior alteration).
Permit & Project History on This Parcel (6 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B48571 | Roof replacement | Issued | Iss. Sep 30, 2026 | $53,000 | ReRoofing |
| B40559 | Solar / battery storage | Issued | Iss. Dec 16, 2024 | $14,500 | New energy storage system (ESS) only installation paired with existing solar system that installed on permit #B29543. Eq… |
| 172685 | Solar / battery storage | Issued | Iss. Nov 7, 2022 | $26,000 | Ground Mount Hydronic Solar Thermal System |
| B29543 | Solar / battery storage | Issued | Iss. Apr 26, 2022 | $55,865 | Removal of existing roof-mounted solar photovoltaic system. Replacement with new roof-mounted solar photovoltaic system,… |
| B28540 | Electrical / panel | Issued |