130 Sunset Way
Sausalito 94965 · Muir Beach · Unincorporated Marin · Coordinates: 37.86097, -122.57867
Executive Verdict · Public-Records Synthesis
Zoned C-RA-B2 in Unincorporated Marin and mapped CAL FIRE very high fire hazard severity zone (state responsibility area) due diligence; benchmark value $2,037,000 ($1,793,000–$2,281,000).
Upsides & Opportunities
- ✓ Documented permitted upgrades (+$250,582 contributory est.)
Public building records show issued construction/renovation work on this parcel (8 total permits, latest Sep 11, 2025).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (parcel APN)
Watchouts & Due Diligence
- ! Mapped flood awareness zone (Zone X: minimal flood hazard)
all of the lot of the parcel intersects Zone X: minimal flood hazard. 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 (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)
- ! Delayed or open permit activity on this parcel
Remodel / interior alteration (176306): Issued after 9 mo (3.2× the 83d median) — above the 75th percentile for remodel / interior alteration permits in Unincorporated Marin (median 83d, 75th pct 148d, n=1,054).
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: Accessory dwelling unit at 69 Starbuck Dr (adu 69a) (0.17 mi N, 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:
- 17,685 sq ft (0.41 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 130 SUNSET WAY
Zoning & Land Use
C-RA-B2 — Residential Agriculture (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADUPossible, with conditions
Zoned C-RA-B2 (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 lotCan't tell
Zoned C-RA-B2 (single-family residential): we can't tell whether it counts as a single-family zone for SB 9. Residential agriculture, estate and restricted: large-lot residential; confirm SB 9 with the county.
- SB 9: split into two lotsCan't tell
Zoned C-RA-B2 (single-family residential): we can't tell whether it counts as a single-family zone for SB 9. Residential agriculture, estate and restricted: large-lot residential; confirm SB 9 with the county.
Mapped Hazard Zones on This Lot
- CAL FIRE Fire Hazard Severity Zone
- Very High Fire Hazard Severity Zone (State Responsibility Area) (all of the lot, map Apr 1, 2024)
- FEMA National Flood Hazard Layer
- Zone X: minimal flood hazard (all of the lot) · FIRM panel 06041C0505E, 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: $1,793,000 – $2,281,000 · Status: Off market
HUD Small Area FMR (ZIP 94965) · FY 2026
Studio $2,720 · 1BR $3,260 · 2BR $3,950 · 3BR $5,050 · 4BR $5,230
Developments Deserving Closer Investigation & Active Area Builders
- Accessory dwelling unit at 69 Starbuck Dr (adu 69a) (Issued)0.17 mi N
Active in "Issued" for 2.5 yr (first record May 28, 2024) with no new permit activity recorded in 20 mo. High-impact scale (1 housing unit, $1,200,000 declared valuation across 1 permit).
- Remodel / interior alteration (176306) (Issued)On this parcel
Issued after 9 mo (3.2× the 83d median) — above the 75th percentile for remodel / interior alteration permits in Unincorporated Marin (median 83d, 75th pct 148d, n=1,054).
- Addition (adds square footage) (176305) (Issued)On this parcel
Issued after 11 mo (2.1× the 160d median) — above the 75th percentile for addition (adds square footage) permits in Unincorporated Marin (median 160d, 75th pct 249d, n=316).
- Demolition at 40 Starbuck Dr (Issued)0.19 mi NW
Active in "Issued" for 9.8 yr (first record Jan 30, 2017) with no new permit activity recorded in 9.8 yr.
Entity-resolved builders & contractors in ½ mile: Owner Builder (2 on parcel, 13 in ½ mi · Remodel / interior alteration); Sidney Builders (3 on parcel, 3 in ½ mi · Addition (adds square footage)); Solarcraft Services (3 on parcel, 3 in ½ mi · Solar / battery storage); Owner (6 in ½ mi · New garage / accessory structure); Fp Builders (2 in ½ mi · Accessory dwelling unit (new or conversion)).
Permit & Project History on This Parcel (8 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B43845 | Solar / battery storage | Issued | Iss. Sep 11, 2025 | $27,748 | (EXISTING) TILT MOUNTED PV SYSTEM W/ GRID TIED MICROINVERTERS, WITH (NEW) BATTERY STORAGE (EXISTING) MAIN SERVICE PANEL |
| B40185 | Solar / battery storage | Issued | Iss. Nov 14, 2024 | $50,890 | (NEW) 12.00 kW TILT MOUNTED PV SYSTEM W/ GRID TIED MICROINVERTERS, (NEW) MAIN SERVICE PANEL |
| 176307 | New garage / accessory structure | Issued | Iss. Mar 29, 2024 | $192,000 | New Garage |
| 176306 | Remodel / interior alteration | Issued | Iss. Mar 29, 2024 | $7,500 | Remodel Cottage #2 - Remove Kitchen, Patch And Paint |
| 176305 | Addition (adds square footage) | Issued |