31 Carrie St
Tomales 94971 · Tomales · Unincorporated Marin · Coordinates: 38.24721, -122.90725
Executive Verdict · Public-Records Synthesis
Zoned C-RSP-7.26 in Unincorporated Marin with likely ADU & SB 9 infill eligibility and mapped CAL FIRE moderate fire hazard severity zone (state responsibility area) due diligence; benchmark value $1,243,000 ($1,094,000–$1,392,000).
Upsides & Opportunities
- ✓ ADU & SB 9 infill pathways screen as likely eligible
Zoned C-RSP-7.26 supports ministerial ADU/JADU review plus SB 9 both two-unit development and ministerial urban lot split on a 6,447 sq ft lot.
Source: Unincorporated Marin zoning · CA Gov. Code 66314 & 65852.21
- ✓ Documented permitted upgrades (+$3,795 contributory est.)
Public building records show issued construction/renovation work on this parcel (5 total permits, latest Dec 22, 2023).
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 Moderate 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)
- ! 4 slow or stalled nearby projects within ½ mile
Closest lead: New commercial building at 599 Dillon Beach Rd (0.17 mi 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 (~$14,745/yr at $1,243,000)
Sale triggers reassessment to 1.00% base + ~0.15% voter debt (~$1,229/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:
- 6,447 sq ft (0.15 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 31 CARRIE ST
Zoning & Land Use
C-RSP-7.26 — Residential Single Family Planned (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned C-RSP-7.26 (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotLikely eligible
Zoned C-RSP-7.26, a single-family residential zone.
- SB 9: split into two lotsLikely eligible
Zoned C-RSP-7.26, a single-family residential zone. The lot is 6,447 sq ft by the assessor, room for two lots of at least 1,200 sq ft, each at least 40% of the original.
Mapped Hazard Zones on This Lot
- CAL FIRE Fire Hazard Severity Zone
- Moderate 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 06041C0085E, 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: $1,094,000 – $1,392,000 · Status: Off market
HUD Small Area FMR (ZIP 94971) · FY 2026
Studio $2,400 · 1BR $2,870 · 2BR $3,480 · 3BR $4,450 · 4BR $4,610
Developments Deserving Closer Investigation & Active Area Builders
- New commercial building at 599 Dillon Beach Rd (Issued)0.17 mi W
Active in "Issued" for 8.1 yr (first record Oct 9, 2018) with no new permit activity recorded in 7.7 yr. High-impact scale ($6,662,000 declared valuation across 2 permits).
- New home at 15 Carrie St (Issued)150 ft S
Active in "Issued" for 5.2 yr (first record Sep 17, 2021) with no new permit activity recorded in 2.6 yr.
- Accessory dwelling unit at 23 Church St (aka 21) (Issued)0.13 mi S
Active in "Issued" for 4.7 yr (first record Mar 11, 2022) with no new permit activity recorded in 3.2 yr.
- New home at 21 Church St (Issued)0.13 mi S
Active in "Issued" for 4.7 yr (first record Mar 11, 2022) with no new permit activity recorded in 3.2 yr.
Entity-resolved builders & contractors in ½ mile: Ernest Ongaro And Sons (3 on parcel, 3 in ½ mi · Electrical / panel); Rebath By Schicker (1 on parcel, 1 in ½ mi · Remodel / interior alteration); Home Depot USA (1 on parcel, 1 in ½ mi · Windows / doors / siding); Owner Builder (9 in ½ mi · Remodel / interior alteration); Ef Brett And (3 in ½ mi · Demolition).
Permit & Project History on This Parcel (5 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B36508 | Electrical / panel | Issued | Iss. Dec 22, 2023 | $7,700 | Upgrade 125 amp main panel to 200 amp. Whole home re-device, all new receptacle outlets to be tamper resistant & replace… |
| B28072 | Plumbing / water heater / sewer | Issued | Iss. Dec 13, 2021 | $1,800 | Replace failed tanked WH with new tankless WH. Run the gas line from propane tank to home with a branch for future gener… |
| B26059 | HVAC / heat pump | Issued | Iss. Jun 15, 2021 | $2,000 | replace failed wall furnace with new wall furnace in hallway — Replace Mechanical Appliance |
| B11552 | Windows / doors / siding | Issued | Iss. Dec 14, 2016 | $1,750 | replace 2 windows - retrofit vinyl — Non-structural Door/Window Replacement |
| 153757 |