18 A Main Dock
Sausalito 94965 · Waldo Point · Unincorporated Marin · Coordinates: 37.87224, -122.50281
Executive Verdict · Public-Records Synthesis
Zoned RF-BFC in Unincorporated Marin and mapped FEMA AE flood due diligence; benchmark value $1,474,000 ($1,297,000–$1,651,000).
Upsides & Opportunities
- ✓ Documented permitted upgrades (+$108,000 contributory est.)
Public building records show issued construction/renovation work on this parcel (1 total permit, latest Dec 21, 2019).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (parcel APN)
Watchouts & Due Diligence
- ! FEMA Special Flood Hazard Area (AE, all of the lot of lot)
Zone AE: 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)
- ! 6 slow or stalled nearby projects within ½ mile
Closest lead: New home at 1 D Main Dock (220 ft W, 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 (~$17,401/yr at $1,474,000)
Sale triggers reassessment to 1.00% base + ~0.15% voter debt (~$1,450/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:
- 566 sq ft (0.01 ac)
- Assessor use:
- Floating Home
- Addresses on lot:
- 18A MAIN DOCK
Zoning & Land Use
RF-BFC — Floating Home Marina (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADUCan't tell
Zoned RF-BFC (other): ADUs are allowed if the zone allows a home, which depends on the zone's rules.
- SB 9: two homes on the lotUnlikely
Zoned RF-BFC (other), not a single-family residential zone.
- SB 9: split into two lotsUnlikely
Zoned RF-BFC (other), not a single-family residential zone.
Mapped Hazard Zones on This Lot
- CAL FIRE Fire Hazard Severity Zone
- Not in a State-mapped fire hazard severity zone
- FEMA National Flood Hazard Layer
- Zone AE: 1% annual chance flood (Special Flood Hazard Area) (all of the lot) · FIRM panel 06041C0507E, effective March 16, 2016
- CGS Alquist-Priolo Earthquake Fault Zone
- Not in an Alquist-Priolo Earthquake Fault Zone
Surrounding Rent & Value Benchmarks (Public Records)
Range: $1,297,000 – $1,651,000 · 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
- New home at 1 D Main Dock (Issued)220 ft W
Active in "Issued" for 11.4 yr (first record Jul 7, 2015) with no new permit activity recorded in 8.5 yr. High-impact scale (1 housing unit, 1 deed-restricted affordable, $78,000 declared valuation across 1 permit).
- New home at 7 Charles Van Damme Dock (Issued)380 ft NW
Active in "Issued" for 9.3 yr (first record Aug 1, 2017) with no new permit activity recorded in 7.2 yr. High-impact scale (1 housing unit, 1 deed-restricted affordable, $110,000 declared valuation across 1 permit).
- New home at 61 Liberty Dock (Applied)0.14 mi NE
In "Applied" for 11.5 yr (since May 6, 2015), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
- New home at 20 Issaquah Dock (Issued)0.12 mi N
Active in "Issued" for 15 mo (first record Aug 4, 2025) with no new permit activity recorded in 11 mo. High-impact scale (1 housing unit, $950,000 declared valuation across 1 permit).
Entity-resolved builders & contractors in ½ mile: Bonnie L Carpenter (1 on parcel, 2 in ½ mi · Addition (adds square footage)); Owner Builder (47 in ½ mi · Remodel / interior alteration); Owner (11 in ½ mi · New garage / accessory structure); Insight Builders (6 in ½ mi · Remodel / interior alteration); Wise Owl Construction (5 in ½ mi · Addition (adds square footage)).
Permit & Project History on This Parcel (1 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 163672 | Addition (adds square footage) | Issued | Iss. Dec 21, 2019 | $200,000 | Addtn, Struct Rmdl, New Deck On House Boat T.D. 5/20/19 |