40 Starbuck Dr
Sausalito 94965 · Muir Beach · Unincorporated Marin · Coordinates: 37.86324, -122.58075
Executive Verdict · Public-Records Synthesis
Zoned C-RA-B4 in Unincorporated Marin and mapped CAL FIRE very high fire hazard severity zone (state responsibility area) due diligence; benchmark value $1,925,000 ($1,694,000–$2,156,000).
Upsides & Opportunities
- ✓ Documented permitted upgrades (+$93,286 contributory est.)
Public building records show issued construction/renovation work on this parcel (6 total permits, latest May 16, 2018).
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
Demolition at 40 Starbuck Dr: Active in "Issued" for 9.8 yr (first record Jan 30, 2017) with no new permit activity recorded in 9.8 yr.
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (review-time benchmark)
- ! 3 slow or stalled nearby projects within ½ mile
Closest lead: Accessory dwelling unit at 69 Starbuck Dr (adu 69a) (0.1 mi 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:
- 34,325 sq ft (0.79 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 40 STARBUCK DR
Zoning & Land Use
C-RA-B4 — Residential Agriculture (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADUPossible, with conditions
Zoned C-RA-B4 (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-B4 (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-B4 (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: $1,694,000 – $2,156,000 · 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
- Demolition at 40 Starbuck Dr (Issued)On this parcel
Active in "Issued" for 9.8 yr (first record Jan 30, 2017) with no new permit activity recorded in 9.8 yr.
- Accessory dwelling unit at 69 Starbuck Dr (adu 69a) (Issued)0.1 mi E
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).
- New commercial building at 87 Seacape Dr (Issued)0.24 mi W
Active in "Issued" for 2.6 yr (first record Apr 17, 2024) with no new permit activity recorded in 19 mo.
- Accessory dwelling unit at 77 Starbuck Dr (Applied)520 ft NE
In "Applied" for 18 mo (since May 28, 2025), exceeding the 253d median and 456d 75th percentile for new single-family home permits in Unincorporated Marin (n=121).
Entity-resolved builders & contractors in ½ mile: Owner (3 on parcel, 7 in ½ mi · New garage / accessory structure); Sun First (2 on parcel, 2 in ½ mi · Solar / battery storage); Fidelity Roof (1 on parcel, 1 in ½ mi · Roof replacement); Owner Builder (11 in ½ mi · Remodel / interior alteration); Sidney Builders (3 in ½ mi · Addition (adds square footage)).
Permit & Project History on This Parcel (6 permits, 1 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 158503 | Solar / battery storage | Issued | Iss. May 16, 2018 | $19,775 | Battery Backup |
| 157019 | Solar / battery storage | Issued | Iss. Nov 9, 2017 | $27,900 | P V Sys 6.555 K W |
| 156599 | Remodel / interior alteration | Issued | Iss. Sep 27, 2017 | $225,000 | Rmdl; Roof Changes; Deck |
| B13142 | Roof replacement | Issued | Iss. Aug 24, 2017 | $60,000 | Tear of residential re-roof. — ReRoofing |
| B12532 |