345 Walnut Rd
Bolinas 94924 · Bolinas · Unincorporated Marin · Coordinates: 37.90035, -122.70792
Executive Verdict · Public-Records Synthesis
Zoned C-RA-B2 in Unincorporated Marin with likely ministerial ADU eligibility and mapped CAL FIRE high fire hazard severity zone (state responsibility area) due diligence; benchmark value $2,208,000 ($1,943,000–$2,473,000).
Upsides & Opportunities
- ✓ Ministerial ADU / JADU pathway likely eligible
Zone C-RA-B2 allows residential use qualifying for ministerial ADU review under state law.
Source: Unincorporated Marin zoning · CA Gov. Code 66314
- ✓ Documented permitted upgrades (+$15,400 contributory est.)
Public building records show issued construction/renovation work on this parcel (1 total permit, latest Apr 13, 2021).
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 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)
- ! 6 slow or stalled nearby projects within ½ mile
Closest lead: Accessory dwelling unit at 387 Ocean Pkwy A K A (0.15 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 (~$25,842/yr at $2,208,000)
Sale triggers reassessment to 1.00% base + ~0.15% voter debt (~$2,154/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:
- 31,799 sq ft (0.73 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 345 WALNUT RD
Zoning & Land Use
C-RA-B2 — Residential Agriculture (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned C-RA-B2 (single-family residential): state law allows ADUs where homes are allowed.
- 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
- 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 06041C0440E, 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: $1,943,000 – $2,473,000 · Status: Off market
HUD Small Area FMR (ZIP 94924) · FY 2026
Studio $2,050 · 1BR $2,510 · 2BR $2,990 · 3BR $3,730 · 4BR $3,960
Developments Deserving Closer Investigation & Active Area Builders
- Accessory dwelling unit at 387 Ocean Pkwy A K A (Issued)0.15 mi SW
Active in "Issued" for 8.1 yr (first record Oct 16, 2018) with no new permit activity recorded in 6.6 yr.
- New home at 260 Laurel Rd A K A (Issued)0.25 mi E
Active in "Issued" for 9.7 yr (first record Mar 9, 2017) with no new permit activity recorded in 7.8 yr.
- Demolition at 135 Rosewood Rd (Issued)0.27 mi S
Active in "Issued" for 9.5 yr (first record May 24, 2017) with no new permit activity recorded in 9.5 yr.
- Accessory dwelling unit at 105 Kale Rd (adu 105a) (Issued)0.34 mi E
Active in "Issued" for 2.2 yr (first record Sep 17, 2024) with no new permit activity recorded in 19 mo.
Entity-resolved builders & contractors in ½ mile: Bilgart Design (1 on parcel, 1 in ½ mi · Remodel / interior alteration); Owner Builder (12 in ½ mi · New garage / accessory structure); Owner (4 in ½ mi · Addition (adds square footage)); Upscale Construction (3 in ½ mi · Demolition); Nemec Construction (2 in ½ mi · New garage / accessory structure).
Permit & Project History on This Parcel (1 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 167776 | Remodel / interior alteration | Issued | Iss. Apr 13, 2021 | $35,000 | Bath & Closet Remodel, New Washer Dryer Location. |