55 Tamal Rd
Forest Knolls 94933 · Forest Knolls · Unincorporated Marin · Coordinates: 38.01610, -122.69005
Executive Verdict · Public-Records Synthesis
Zoned RA-B4-SGV in Unincorporated Marin with likely ministerial ADU eligibility and mapped CAL FIRE high fire hazard severity zone (state responsibility area) due diligence; benchmark value $994,000 ($875,000–$1,113,000).
Upsides & Opportunities
- ✓ Ministerial ADU / JADU pathway likely eligible
Zone RA-B4-SGV allows residential use qualifying for ministerial ADU review under state law (1 ADU permit permitted within ¼ mile in 36 months).
Source: Unincorporated Marin zoning · CA Gov. Code 66314
- ✓ Documented permitted upgrades (+$6,080 contributory est.)
Public building records show issued construction/renovation work on this parcel (3 total permits, latest Mar 3, 2026).
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: Demolition at 6956 Sir Francis Drake Blvd (390 ft 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 (~$11,881/yr at $994,000)
Sale triggers reassessment to 1.00% base + ~0.15% voter debt (~$990/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:
- 38,856 sq ft (0.89 ac)
- Assessor use:
- Multiple-Resid. - Improved
- Addresses on lot:
- 55 TAMAL RD
Zoning & Land Use
RA-B4-SGV — Residential Agriculture (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned RA-B4-SGV (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotCan't tell
Zoned RA-B4-SGV (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 RA-B4-SGV (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 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: $875,000 – $1,113,000 · Status: Off market
HUD Small Area FMR (ZIP 94933) · FY 2026
Studio $2,870 · 1BR $3,440 · 2BR $4,160 · 3BR $5,310 · 4BR $5,510
Developments Deserving Closer Investigation & Active Area Builders
- Demolition at 6956 Sir Francis Drake Blvd (Issued)390 ft SW
Active in "Issued" for 2.8 yr (first record Jan 10, 2024) with no new permit activity recorded in 2.7 yr.
- Demolition at 2 Juarez Ave (Issued)0.13 mi SE
Active in "Issued" for 9.9 yr (first record Dec 28, 2016) with no new permit activity recorded in 8.9 yr.
- New home at 42 Arroyo Rd (Issued)0.15 mi W
Active in "Issued" for 12.3 yr (first record Aug 11, 2014) with no new permit activity recorded in 11.8 yr.
- Accessory dwelling unit at 8 Morelos Ave (Issued)0.16 mi SW
Active in "Issued" for 6.1 yr (first record Oct 8, 2020) with no new permit activity recorded in 6.1 yr.
Entity-resolved builders & contractors in ½ mile: Simply Solar (1 on parcel, 1 in ½ mi · Other); Mcdonald Heating And Cooling (1 on parcel, 1 in ½ mi · HVAC / heat pump); Owner Builder (9 in ½ mi · Accessory dwelling unit (new or conversion)); Owner (7 in ½ mi · Remodel / interior alteration); Zia Designs (2 in ½ mi · Demolition).
Permit & Project History on This Parcel (3 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B46071 | Other | Issued | Iss. Mar 3, 2026 | $16,850 | — |
| B28407 | HVAC / heat pump | Issued | Iss. Jan 19, 2022 | $5,216 | Ductless Mini Split Replacement SEER 14 HSPF 8.0 AFUE 80% — Replace Mechanical Appliance |
| 166074 | Solar / battery storage | Issued | Iss. Oct 28, 2020 | — | Photovoltaic 6.6 Kw |