951 Smith Rd
Mill Valley 94941 · Tamalpais · Unincorporated Marin · Coordinates: 37.87298, -122.54149
Executive Verdict · Public-Records Synthesis
Zoned A2-B2 in Unincorporated Marin and mapped CAL FIRE high fire hazard severity zone (state responsibility area) due diligence; benchmark value $2,337,000 ($2,057,000–$2,617,000).
Upsides & Opportunities
- ✓ Documented permitted upgrades (+$32,665 contributory est.)
Public building records show issued construction/renovation work on this parcel (8 total permits, latest Nov 1, 2024).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (parcel APN)
- ✓ Above-average reinvestment in Tamalpais
50 substantial renovation & housing permits over 24 months (20.5 per 1,000 parcels vs. 16.4 citywide baseline) (#3 of 22 neighborhoods).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (Tamalpais)
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 875 Marin Dr (0.21 mi NW, 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 (~$27,326/yr at $2,337,000)
Sale triggers reassessment to 1.00% base + ~0.15% voter debt (~$2,277/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:
- 28,750 sq ft (0.66 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 951 SMITH RD; 951 SMITH RD A
Zoning & Land Use
A2-B2 — Agriculture Limited (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADUCan't tell
Zoned A2-B2 (agricultural): ADUs are allowed if the zone allows a home, which depends on the zone's rules.
- SB 9: two homes on the lotUnlikely
Zoned A2-B2 (agricultural), not a single-family residential zone.
- SB 9: split into two lotsUnlikely
Zoned A2-B2 (agricultural), not a single-family residential zone.
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 06041C0510E, 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: $2,057,000 – $2,617,000 · Status: Off market
HUD Small Area FMR (ZIP 94941) · FY 2026
Studio $2,730 · 1BR $3,270 · 2BR $3,960 · 3BR $5,060 · 4BR $5,240
Developments Deserving Closer Investigation & Active Area Builders
- Accessory dwelling unit at 875 Marin Dr (Applied)0.21 mi NW
In "Applied" for 2.6 yr (since Apr 11, 2024), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121). Record changed to "updated" in snapshot Nov 4, 2026.
- New home at 808 Spring Dr (Issued)0.23 mi NW
Active in "Issued" for 4.9 yr (first record Dec 13, 2021) with no new permit activity recorded in 4.7 yr. High-impact scale (1 housing unit, $850,000 declared valuation across 1 permit).
- New home at 746 Alta Vista Rd (Issued)0.24 mi N
Active in "Issued" for 3.3 yr (first record Jul 19, 2023) with no new permit activity recorded in 2.3 yr. High-impact scale (1 housing unit, $1,183,700 declared valuation across 2 permits).
- New home at 812 Spring Dr (Issued)0.24 mi NW
Active in "Issued" for 4.1 yr (first record Sep 19, 2022) with no new permit activity recorded in 3.3 yr. High-impact scale (1 housing unit, $1,006,000 declared valuation across 1 permit).
Entity-resolved builders & contractors in ½ mile: Owner Builder (1 on parcel, 34 in ½ mi · Remodel / interior alteration); Semper Solaris Construction (5 on parcel, 5 in ½ mi · Other); Bigham Services (1 on parcel, 1 in ½ mi · Electrical / panel); Home Depot USA (1 on parcel, 1 in ½ mi · Windows / doors / siding); Owner (17 in ½ mi · Remodel / interior alteration).
Permit & Project History on This Parcel (8 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B40038 | Other | Issued | Iss. Nov 1, 2024 | $49,893 | REVISION ON #B37531 Equipment locations have been updated to match install. All equipment moved to adjacent wall. |
| 177804 | New garage / accessory structure | Issued | Iss. Oct 9, 2024 | $30,000 | New Det Garage |
| B39317 | Other | Issued | Iss. Aug 30, 2024 | $49,893 | REVISION ON #B37531 Batteries have been changed to 1 (N) TESLA POWERWALL3, IQ Combiners and microinverters have been rem… |
| B39033 | HVAC / heat pump | Issued | Iss. Aug 7, 2024 | $15,486 | ADD ON AC IN BACKYARD SEER 14 3 TONS — Mechanical Appliance |
| B38454 | Solar / battery storage | Issued |