9 Marine Dr
San Rafael 94901 · Bayside Acres · Unincorporated Marin · Coordinates: 37.97650, -122.47561
Executive Verdict · Public-Records Synthesis
Zoned RSP-7.26-BFC in Unincorporated Marin with likely ministerial ADU eligibility and mapped FEMA AE flood due diligence; benchmark value $1,712,000 ($1,507,000–$1,917,000).
Upsides & Opportunities
- ✓ Ministerial ADU / JADU pathway likely eligible
Zone RSP-7.26-BFC allows residential use qualifying for ministerial ADU review under state law (2 ADU permits permitted within ¼ mile in 36 months).
Source: Unincorporated Marin zoning · CA Gov. Code 66314
- ✓ 4 documented municipal building permits on file
On-parcel permit history is indexed through Jan 19, 2025, 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 (AE, about 12% 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 22 Beach Dr (0.22 mi SW, 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 (~$20,138/yr at $1,712,000)
Sale triggers reassessment to 1.00% base + ~0.15% voter debt (~$1,678/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:
- 26,354 sq ft (0.61 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 9 MARINE DR
Zoning & Land Use
RSP-7.26-BFC — Residential Single Family Planned (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned RSP-7.26-BFC (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotPossible, with conditions
Zoned RSP-7.26-BFC, a single-family residential zone. FEMA Special Flood Hazard Area (Zone VE) covers about 68% 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 RSP-7.26-BFC, a single-family residential zone. The lot is 26,354 sq ft by the assessor, room for two lots of at least 1,200 sq ft, each at least 40% of the original. FEMA Special Flood Hazard Area (Zone VE) covers about 68% 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
- Not in a State-mapped fire hazard severity zone
- FEMA National Flood Hazard Layer
- Zone AE: 1% annual chance flood (Special Flood Hazard Area) (about 12% of the lot); Zone VE: 1% annual chance flood (Special Flood Hazard Area) (about 68% of the lot); Zone X: minimal flood hazard (about 20% of the lot) · FIRM panel 06041C0476E, 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: $1,507,000 – $1,917,000 · Status: Off market
HUD Small Area FMR (ZIP 94901) · FY 2026
Studio $2,150 · 1BR $2,580 · 2BR $3,120 · 3BR $3,990 · 4BR $4,130
Developments Deserving Closer Investigation & Active Area Builders
- New home at 22 Beach Dr (Issued)0.22 mi SW
Active in "Issued" for 3.4 yr (first record Jun 27, 2023) with no new permit activity recorded in 2.8 yr. High-impact scale (1 housing unit, $1,200,000 declared valuation across 1 permit).
- Accessory dwelling unit at 771 Pt San Pedro Rd (Applied)0.13 mi W
In "Applied" for 4 yr (since Nov 15, 2022), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
- New home at 726 Pt San Pedro Rd (Issued)0.23 mi W
Active in "Issued" for 3.6 yr (first record Apr 14, 2023) with no new permit activity recorded in 7 mo. High-impact scale (1 housing unit, $2,000,000 declared valuation across 1 permit).
- Accessory dwelling unit at 44 Beach Dr (aka 46 Marine Dr) (Issued)0.15 mi SW
Active in "Issued" for 3.6 yr (first record Mar 29, 2023) with no new permit activity recorded in 3.3 yr.
Entity-resolved builders & contractors in ½ mile: Owner (1 on parcel, 7 in ½ mi · Remodel / interior alteration); Colindres Roofing (1 on parcel, 1 in ½ mi · Roof replacement); Sonoma Marin Electric (1 on parcel, 1 in ½ mi · Plumbing / water heater / sewer); Ernest Ongaro And Sons (1 on parcel, 1 in ½ mi · HVAC / heat pump); Owner Builder (8 in ½ mi · Remodel / interior alteration).
Permit & Project History on This Parcel (4 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B40904 | Plumbing / water heater / sewer | Issued | Iss. Jan 19, 2025 | $10,000 | Install new MSP and other electrical devices, conduit, and wiring for the Bayside Acres Phase 2B sewer relocation projec… |
| B25418 | HVAC / heat pump | Issued | Iss. Apr 8, 2021 | $4,000 | replace failed furnace with new furnace — Replace Mechanical Appliance |
| B17528 | Roof replacement | Issued | Iss. Apr 17, 2019 | $17,000 | Re-roof, shingles, tear off — ReRoofing; With Electronic Inspection |
| B14544 | Plumbing / water heater / sewer | Issued | Iss. Mar 19, 2018 | $535 | New Hot water heater — New Plumbing Fixture(s) |