4 A Sacramento Patio
Stinson Beach 94970 · Stinson Beach · Unincorporated Marin · Coordinates: 37.90317, -122.65156
Executive Verdict · Public-Records Synthesis
Zoned C-R1 in Unincorporated Marin and mapped CAL FIRE very high fire hazard severity zone (local responsibility area) due diligence; benchmark value $3,046,000 ($2,680,000–$3,412,000).
Upsides & Opportunities
- ✓ Documented permitted upgrades (+$17,280 contributory est.)
Public building records show issued construction/renovation work on this parcel (1 total permit, latest Jan 31, 2025).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (parcel APN)
Watchouts & Due Diligence
- ! Mapped flood awareness zone (Zone X: 0.2% annual chance flood hazard (shaded X))
all of the lot of the parcel intersects Zone X: 0.2% annual chance flood hazard (shaded X). Outside mandatory federal SFHA insurance rules, but check local drainage and finished-floor requirements.
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)
- ! 6 slow or stalled nearby projects within ½ mile
Closest lead: New home at 4 Sacramento Patio (adu 4a) (On this parcel, 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)
- ! Year 1 Prop 13 tax reset (~$35,479/yr at $3,046,000)
Sale triggers reassessment to 1.00% base + ~0.15% voter debt (~$2,957/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:
- 8,364 sq ft (0.19 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 4A SACRAMENTO PATIO; 4 SACRAMENTO PATIO
Zoning & Land Use
C-R1 — Residential Single Family (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADUPossible, with conditions
Zoned C-R1 (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-R1, 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.
- SB 9: split into two lotsPossible, with conditions
Zoned C-R1, a single-family residential zone. The lot is 8,364 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.
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 X: 0.2% annual chance flood hazard (shaded X) (all of the lot) · FIRM panel 06041C0444E, 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: $2,680,000 – $3,412,000 · 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
- New home at 4 Sacramento Patio (adu 4a) (Issued)On this parcel
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)0.13 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)0.35 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).
- New home at 73 Dipsea Rd (Issued)0.48 mi NW
Active in "Issued" for 8 yr (first record Nov 13, 2018) with no new permit activity recorded in 7.8 yr. High-impact scale (1 housing unit, $925,000 declared valuation across 1 permit).
Entity-resolved builders & contractors in ½ mile: Oxypower (1 on parcel, 1 in ½ mi · Solar / battery storage); Gubbins Building (10 in ½ mi · Remodel / interior alteration); Owner Builder (7 in ½ mi · Remodel / interior alteration); Allen Construction (5 in ½ mi · New garage / accessory structure); Kasten Builders (5 in ½ mi · Pool / spa).
Permit & Project History on This Parcel (1 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B41082 | Solar / battery storage | Issued | Iss. Jan 31, 2025 | $247,138 | Install new grid interactive rooftop PV systems 24.9 kW with Franklin energy storage system 4 @ 15 kWh each total 60 kWh… |