18855 State Route 1
Marshall 94940 · East Shore · Unincorporated Marin · Coordinates: 38.14686, -122.88320
Executive Verdict · Public-Records Synthesis
Zoned C-CP in Unincorporated Marin and mapped FEMA AE flood / CAL FIRE moderate fire hazard severity zone (state responsibility area) due diligence; benchmark value $1,756,000 ($1,545,000–$1,967,000).
Upsides & Opportunities
- ✓ 7 documented municipal building permits on file
On-parcel permit history is indexed through Dec 21, 2022, 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
- ! FEMA Special Flood Hazard Area (AE, about 98% of the lot of lot)
Zone AE: 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 Moderate 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)
- ! Year 1 Prop 13 tax reset (~$20,644/yr at $1,756,000)
Sale triggers reassessment to 1.00% base + ~0.15% voter debt (~$1,720/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:
- 62,509 sq ft (1.44 ac)
- Assessor use:
- Commercial - Improved
- Addresses on lot:
- 18855 STATE ROUTE 1; 18861 STATE ROUTE 1; 18863 STATE ROUTE 1
Zoning & Land Use
C-CP — Planned Commercial (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADUUnlikely
Zoned C-CP (commercial): the zone doesn't allow homes, so state ADU rules don't apply.
- SB 9: two homes on the lotUnlikely
Zoned C-CP (commercial), not a single-family residential zone.
- SB 9: split into two lotsUnlikely
Zoned C-CP (commercial), 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) (about 27% of the lot, map Apr 1, 2024)
- FEMA National Flood Hazard Layer
- Zone AE: 1% annual chance flood (Special Flood Hazard Area) (about 98% of the lot); Zone X: minimal flood hazard (about 2% of the lot) · FIRM panel 06041C0095E, effective August 15, 2017
- CGS Alquist-Priolo Earthquake Fault Zone
- Not in an Alquist-Priolo Earthquake Fault Zone
Surrounding Rent & Value Benchmarks (Public Records)
Range: $1,545,000 – $1,967,000 · Status: Off market
HUD Small Area FMR (ZIP 94940) · FY 2026
Studio $2,050 · 1BR $2,510 · 2BR $2,990 · 3BR $3,870 · 4BR $4,090
Developments Deserving Closer Investigation & Active Area Builders
Entity-resolved builders & contractors in ½ mile: Trainor Commercial Construction (5 on parcel, 5 in ½ mi · Commercial tenant improvement); Northbay Roofing And Gutters (1 on parcel, 1 in ½ mi · Roof replacement); John Philip Berg (1 in ½ mi · New garage / accessory structure).
Permit & Project History on This Parcel (7 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B32115 | Roof replacement | Issued | Iss. Dec 21, 2022 | $15,995 | T/O existing roof and install new Class A Comp Shingle, 1200 sq ft — ReRoofing |
| 160434 | Other | Issued | Iss. Dec 27, 2018 | $5,000 | New Ramp T.D. 12/24/18 |
| 159099 | Commercial tenant improvement | Issued | Iss. Jul 19, 2018 | $75,000 | Storage & A D A Bathrooms T.D. 5/23/18 |
| 159098 | Commercial tenant improvement | Issued | Iss. Jul 19, 2018 | $275,000 | Restaurant T I T.D. 5/23/18 |
| 158923 | New garage / accessory structure | Issued | Iss. Jun 28, 2018 | $30,000 |