6401 Lucas Valley Rd
Nicasio 94946 · Nicasio · Unincorporated Marin · Coordinates: 38.05445, -122.66545
Executive Verdict · Public-Records Synthesis
Zoned ARP-5 in Unincorporated Marin and mapped FEMA A flood / CAL FIRE high fire hazard severity zone (state responsibility area) due diligence; benchmark value $2,101,000 ($1,849,000–$2,353,000).
Upsides & Opportunities
- ✓ Documented permitted upgrades (+$17,280 contributory est.)
Public building records show issued construction/renovation work on this parcel (1 total permit, latest Oct 22, 2025).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (parcel APN)
Watchouts & Due Diligence
- ! FEMA Special Flood Hazard Area (A, about 85% 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 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)
- ! 1 slow or stalled nearby project within ½ mile
Closest lead: New home at 5760 Lucas Valley Rd (0.19 mi NE, 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)
- ! Year 1 Prop 13 tax reset (~$24,612/yr at $2,101,000)
Sale triggers reassessment to 1.00% base + ~0.15% voter debt (~$2,051/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:
- 154,246 sq ft (3.54 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 6401 LUCAS VALLEY RD; 6401 LUCAS VALLEY RD A
Zoning & Land Use
ARP-5 — Agriculture Residential Planned (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADUCan't tell
Zoned ARP-5 (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-5 (agricultural), not a single-family residential zone.
- SB 9: split into two lotsUnlikely
Zoned ARP-5 (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 A: 1% annual chance flood (Special Flood Hazard Area) (about 85% of the lot); Zone X: minimal flood hazard (about 15% 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: $1,849,000 – $2,353,000 · 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
Nearby Activity (½ mile radius, since November 2024)
0 active or recent development projects and 6 total building permits recorded within ½ mile.
- New construction2 permits
- Building systems4 permits
Developments Deserving Closer Investigation & Active Area Builders
- New home at 5760 Lucas Valley Rd (Applied)0.19 mi NE
In "Applied" for 6.9 yr (since Dec 18, 2019), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121). High-impact scale (1 housing unit, $1,365,000 declared valuation across 1 permit).
Entity-resolved builders & contractors in ½ mile: Earthwise Energy Solutions (1 on parcel, 1 in ½ mi · Solar / battery storage); Owner Builder (2 in ½ mi · New garage / accessory structure).
Permit & Project History on This Parcel (1 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B44475 | Solar / battery storage | Issued | Iss. Oct 22, 2025 | $49,751 | 5.52 kW Solar Project including a 30 kWh Battery System |