128 Seadrift Rd
Stinson Beach 94970 · Stinson Beach · Unincorporated Marin · Coordinates: 37.90393, -122.65560
Executive Verdict · Public-Records Synthesis
Zoned C-RSPS-2.9 in Unincorporated Marin and mapped FEMA VE flood / CAL FIRE high fire hazard severity zone (local responsibility area) due diligence; benchmark value $3,301,000 ($2,905,000–$3,697,000).
Upsides & Opportunities
- ✓ Documented permitted upgrades (+$14,400 contributory est.)
Public building records show issued construction/renovation work on this parcel (4 total permits, latest Mar 10, 2021).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (parcel APN)
Watchouts & Due Diligence
- ! FEMA Special Flood Hazard Area (VE, about 82% of the lot of lot)
Zone VE: 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 (Local Responsibility Area) (about 47% 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 Mar 24, 2025)
- ! Delayed or open permit activity on this parcel
Solar / battery storage (167360): Issued after 2 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)
- ! 4 slow or stalled nearby projects within ½ mile
Closest lead: New home at 150 Seadrift Rd (0.12 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:
- 26,049 sq ft (0.60 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 128 SEADRIFT RD
Zoning & Land Use
C-RSPS-2.9 — Residential Single Family Planned (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADUPossible, with conditions
Zoned C-RSPS-2.9 (single-family residential): state law allows ADUs where homes are allowed. Very High Fire Hazard Severity Zone covers about 30% of the lot: cities may limit ADUs here for fire safety and evacuation.
- SB 9: two homes on the lotPossible, with conditions
Zoned C-RSPS-2.9, a single-family residential zone. Very High Fire Hazard Severity Zone (local responsibility area) covers about 30% of the lot: SB 9 requires the project to meet the fire hazard mitigation standards. FEMA Special Flood Hazard Area (Zone VE) covers about 82% of the lot: the project must meet the National Flood Insurance Program floodplain standards, or the lot needs a map revision.
- SB 9: split into two lotsPossible, with conditions
Zoned C-RSPS-2.9, a single-family residential zone. The lot is 26,049 sq ft by the assessor, room for two lots of at least 1,200 sq ft, each at least 40% of the original. Very High Fire Hazard Severity Zone (local responsibility area) covers about 30% of the lot: SB 9 requires the project to meet the fire hazard mitigation standards. FEMA Special Flood Hazard Area (Zone VE) covers about 82% of the lot: the project must meet the National Flood Insurance Program floodplain standards, or the lot needs a map revision.
Mapped Hazard Zones on This Lot
- CAL FIRE Fire Hazard Severity Zone
- High Fire Hazard Severity Zone (Local Responsibility Area) (about 47% of the lot, map Mar 24, 2025); Very High Fire Hazard Severity Zone (Local Responsibility Area) (about 30% of the lot, map Mar 24, 2025)
- FEMA National Flood Hazard Layer
- Zone VE: 1% annual chance flood (Special Flood Hazard Area) (about 82% of the lot); Zone X: 0.2% annual chance flood hazard (shaded X) (about 18% of the lot) · FIRM panel 06041C0444E, effective August 15, 2017
Surrounding Rent & Value Benchmarks (Public Records)
Range: $2,905,000 – $3,697,000 · Status: Off market
HUD Small Area FMR (ZIP 94970) · FY 2026
Studio $2,090 · 1BR $2,510 · 2BR $3,030 · 3BR $3,870 · 4BR $4,010
Developments Deserving Closer Investigation & Active Area Builders
- Solar / battery storage (167360) (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).
- New home at 150 Seadrift Rd (Issued)0.12 mi NW
Active in "Issued" for 10.2 yr (first record Sep 6, 2016) with no new permit activity recorded in 9.9 yr. High-impact scale (1 housing unit, $1,750,000 declared valuation across 1 permit).
- New home at 4 Sacramento Patio (adu 4a) (Issued)0.22 mi E
Active in "Issued" for 2.6 yr (first record Apr 24, 2024) with no new permit activity recorded in 2.3 yr. High-impact scale (1 housing unit, $1,800,000 declared valuation across 1 permit).
- New home at 128 Seadrift Rd (Finaled / completed)On this parcel
High-impact scale (1 housing unit, $1,100,000 declared valuation across 1 permit).
Entity-resolved builders & contractors in ½ mile: Gubbins Building (2 on parcel, 13 in ½ mi · Remodel / interior alteration); Sun First (1 on parcel, 1 in ½ mi · Solar / battery storage); Boyce Electric (1 on parcel, 1 in ½ mi · Electrical / panel); Allen Construction (8 in ½ mi · New garage / accessory structure); Schalich Brothers Construction (5 in ½ mi · New single-family home).
Permit & Project History on This Parcel (4 permits, 1 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 167360 | Solar / battery storage | Issued | Iss. Mar 10, 2021 | $50,500 | 6kw Roof Mount Photovotaic & 2 Energy Storage Systems |
| 163217 | New garage / accessory structure | Issued | Iss. Nov 14, 2019 | $400,000 | Guest House, Storage, Stairs/Decks |
| 163216 | New single-family home | Issued | Iss. Nov 14, 2019 | $1,100,000 | Tear-Down Rbld, Stairs/Deck & Storage |
| B20129 | Electrical / panel | Issued | Iss. Oct 15, 2019 | $750 | 100 amp temp power pole — Service Upgrade |