11 Sonoma Patio
Stinson Beach 94970 · Stinson Beach · Unincorporated Marin · Coordinates: 37.90299, -122.65225
Executive Verdict · Public-Records Synthesis
Zoned C-RSP-2 in Unincorporated Marin and mapped FEMA VE flood / CAL FIRE very high fire hazard severity zone (local responsibility area) due diligence; benchmark value $3,142,000 ($2,765,000–$3,519,000).
Upsides & Opportunities
- ✓ 2 documented municipal building permits on file
On-parcel permit history is indexed through Jul 24, 2023, 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 (VE, about 85% 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 Very High Fire Hazard Severity Zone (Local 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 Mar 24, 2025)
- ! Delayed or open permit activity on this parcel
Electrical / panel (167030): Issued after 2 mo — slower than 90% of electrical / panel permits in Unincorporated Marin (median 0d, 90th pct 2d, n=3,019).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (review-time benchmark)
- ! 5 slow or stalled nearby projects within ½ mile
Closest lead: New home at 4 Sacramento Patio (adu 4a) (190 ft E, 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:
- 13,504 sq ft (0.31 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 11 SONOMA PATIO
Zoning & Land Use
C-RSP-2 — Residential Single Family Planned (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADUPossible, with conditions
Zoned C-RSP-2 (single-family residential): state law allows ADUs where homes are allowed. Very High Fire Hazard Severity Zone covers all of the lot: cities may limit ADUs here for fire safety and evacuation.
- SB 9: two homes on the lotPossible, with conditions
Zoned C-RSP-2, a single-family residential zone. Very High Fire Hazard Severity Zone (local responsibility area) covers all of the lot: SB 9 requires the project to meet the fire hazard mitigation standards. FEMA Special Flood Hazard Area (Zone VE) covers about 85% 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-RSP-2, a single-family residential zone. The lot is 13,504 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 all of the lot: SB 9 requires the project to meet the fire hazard mitigation standards. FEMA Special Flood Hazard Area (Zone VE) covers about 85% 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
- Very High Fire Hazard Severity Zone (Local Responsibility Area) (all of the lot, map Mar 24, 2025)
- FEMA National Flood Hazard Layer
- Zone VE: 1% annual chance flood (Special Flood Hazard Area) (about 85% of the lot); Zone X: 0.2% annual chance flood hazard (shaded X) (about 15% of the lot) · FIRM panel 06041C0444E, effective August 15, 2017
Surrounding Rent & Value Benchmarks (Public Records)
Range: $2,765,000 – $3,519,000 · 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
- Electrical / panel (167030) (Issued)On this parcel
Issued after 2 mo — slower than 90% of electrical / panel permits in Unincorporated Marin (median 0d, 90th pct 2d, n=3,019).
- New home at 4 Sacramento Patio (adu 4a) (Issued)190 ft 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 7 Jose Patio (Issued)0.15 mi SE
Active in "Issued" for 3.5 yr (first record May 16, 2023) with no new permit activity recorded in 2.4 yr. High-impact scale (1 housing unit, $1,750,000 declared valuation across 1 permit).
- New home at 150 Seadrift Rd (Issued)0.32 mi W
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).
Entity-resolved builders & contractors in ½ mile: Hayes And Assoc Const (1 on parcel, 1 in ½ mi · Electrical / panel); King Electric (1 on parcel, 1 in ½ mi · Electrical / panel); Gubbins Building (10 in ½ mi · Remodel / interior alteration); Owner Builder (6 in ½ mi · Remodel / interior alteration); Allen Construction (5 in ½ mi · New garage / accessory structure).
Permit & Project History on This Parcel (2 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B34815 | Electrical / panel | Issued | Iss. Jul 24, 2023 | $8,000 | Upgrade 100-amp overhead service to a 200-amp underground service and relocate new meter panel. — Service Upgrade |
| 167030 | Electrical / panel | Issued | Iss. Feb 1, 2021 | $30,000 | Fence; Deck; Hot Tub Elect |