45 Tamarack Rd
San Geronimo 94963 · San Geronimo Village · Unincorporated Marin · Coordinates: 38.01203, -122.67613
Executive Verdict · Public-Records Synthesis
Zoned R1-B4-SGV in Unincorporated Marin with likely ADU & SB 9 infill eligibility and mapped CAL FIRE high fire hazard severity zone (state responsibility area) due diligence; benchmark value $1,305,000 ($1,148,000–$1,462,000).
Upsides & Opportunities
- ✓ ADU & SB 9 infill pathways screen as likely eligible
Zoned R1-B4-SGV supports ministerial ADU/JADU review plus SB 9 both two-unit development and ministerial urban lot split on a 103,803 sq ft lot.
Source: Unincorporated Marin zoning · CA Gov. Code 66314 & 65852.21
- ✓ Documented permitted upgrades (+$66,000 contributory est.)
Public building records show issued construction/renovation work on this parcel (4 total permits, latest Apr 30, 2024).
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: New home at 70 Juniper Ave (0.11 mi SW, applied). 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 (~$15,458/yr at $1,305,000)
Sale triggers reassessment to 1.00% base + ~0.15% voter debt (~$1,288/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:
- 103,803 sq ft (2.38 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 45 TAMARACK RD
Zoning & Land Use
R1-B4-SGV — Residential Single Family (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned R1-B4-SGV (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotLikely eligible
Zoned R1-B4-SGV, a single-family residential zone.
- SB 9: split into two lotsLikely eligible
Zoned R1-B4-SGV, a single-family residential zone. The lot is 103,803 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
- 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 06041C0275D, effective May 4, 2009
- CGS Alquist-Priolo Earthquake Fault Zone
- Not in an Alquist-Priolo Earthquake Fault Zone
Surrounding Rent & Value Benchmarks (Public Records)
Range: $1,148,000 – $1,462,000 · Status: Off market
HUD Small Area FMR (ZIP 94963) · FY 2026
Studio $2,500 · 1BR $3,000 · 2BR $3,630 · 3BR $4,630 · 4BR $4,800
Developments Deserving Closer Investigation & Active Area Builders
- New home at 70 Juniper Ave (Applied)0.11 mi SW
In "Applied" for 4 yr (since Nov 18, 2022), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121). High-impact scale (1 housing unit, $930,000 declared valuation across 1 permit).
- New home at 15 Fir Ave (Applied)470 ft NE
In "Applied" for 5 yr (since Nov 1, 2021), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
- Demolition at 15 Fir Ave (Issued)470 ft NE
Active in "Issued" for 10.3 yr (first record Aug 3, 2016) with no new permit activity recorded in 10.2 yr.
- Accessory dwelling unit at 500 Meadow Way (adu 500a) (Issued)0.27 mi N
Active in "Issued" for 2 yr (first record Nov 6, 2024) with no new permit activity recorded in 21 mo.
Entity-resolved builders & contractors in ½ mile: Leff Const And Dev (1 on parcel, 1 in ½ mi · Remodel / interior alteration); United Generator (1 on parcel, 1 in ½ mi · Other); Central Roofing (1 on parcel, 1 in ½ mi · Roof replacement); Kelly Plumbing And Heating (1 on parcel, 1 in ½ mi · HVAC / heat pump); Owner Builder (8 in ½ mi · Demolition).
Permit & Project History on This Parcel (4 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B37886 | Roof replacement | Issued | Iss. Apr 30, 2024 | $28,000 | 1. REMOVE EXISTING ROOF DOWN TO THE BASE SHEATHING, INSPECT FOR DRY ROT. 2. INSTALL SYNTHETIC ROOFING UNDERLAYMENT. 3. I… |
| B33159 | Other | Issued | Iss. Mar 27, 2023 | $28,500 | Emergency Backup Generator System |
| 152791 | Remodel / interior alteration | Issued | Iss. Jul 26, 2016 | $200,000 | Rmdl Kit & 2 Bas; Add Laundry In Existing Room T.D. 7/20/16 |
| 146895 | HVAC / heat pump | Issued | Iss. Apr 29, 2015 | $8,000 | Replace Boiler |