170 Rancheria Rd
Kentfield 94904 · Kentfield · Unincorporated Marin · Coordinates: 37.94161, -122.55529
Executive Verdict · Public-Records Synthesis
Zoned RSP-0.2 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 $2,548,000 ($2,242,000–$2,854,000).
Upsides & Opportunities
- ✓ ADU & SB 9 infill pathways screen as likely eligible
Zoned RSP-0.2 supports ministerial ADU/JADU review plus SB 9 both two-unit development and ministerial urban lot split on a 58,022 sq ft lot. Local precedent is active with 1 ADU permit within ¼ mile over the last 36 months.
Source: Unincorporated Marin zoning · CA Gov. Code 66314 & 65852.21
- ✓ Documented permitted upgrades (+$79,200 contributory est.)
Public building records show issued construction/renovation work on this parcel (5 total permits, latest Jul 10, 2023).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (parcel APN)
- ✓ Above-average reinvestment in Kentfield
104 substantial renovation & housing permits over 24 months (41.3 per 1,000 parcels vs. 16.4 citywide baseline) (#7 of 22 neighborhoods).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (Kentfield)
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)
- ! Delayed or open permit activity on this parcel
Remodel / interior alteration (161227): Issued after 9 mo (3.4× the 83d median) — slower than 90% of remodel / interior alteration permits in Unincorporated Marin (median 83d, 90th pct 266d, n=1,054).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (review-time benchmark)
- ! 4 slow or stalled nearby projects within ½ mile
Closest lead: New home at 100 Black Log Rd (0.26 mi E, 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)
Parcel & Assessor
- Lot size:
- 58,022 sq ft (1.33 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 170 RANCHERIA RD
Zoning & Land Use
RSP-0.2 — Residential Single Family Planned (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned RSP-0.2 (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotLikely eligible
Zoned RSP-0.2, a single-family residential zone.
- SB 9: split into two lotsLikely eligible
Zoned RSP-0.2, a single-family residential zone. The lot is 58,022 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 06041C0458F, effective March 16, 2016
- CGS Alquist-Priolo Earthquake Fault Zone
- Not in an Alquist-Priolo Earthquake Fault Zone
Surrounding Rent & Value Benchmarks (Public Records)
Range: $2,242,000 – $2,854,000 · Status: Off market
HUD Small Area FMR (ZIP 94904) · FY 2026
Studio $2,260 · 1BR $2,710 · 2BR $3,280 · 3BR $4,190 · 4BR $4,340
Developments Deserving Closer Investigation & Active Area Builders
- New home at 100 Black Log Rd (Applied)0.26 mi E
In "Applied" for 10.7 yr (since Feb 22, 2016), 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, $1,400,000 declared valuation across 1 permit).
- Remodel / interior alteration (161227) (Issued)On this parcel
Issued after 9 mo (3.4× the 83d median) — slower than 90% of remodel / interior alteration permits in Unincorporated Marin (median 83d, 90th pct 266d, n=1,054).
- Other (154647) (Issued)On this parcel
Issued after 6 mo — slower than 90% of other permits in Unincorporated Marin (median 0d, 90th pct 71d, n=1,560).
- Demolition at 15 Blue Ridge Rd (Issued)0.13 mi S
Active in "Issued" for 3.1 yr (first record Oct 13, 2023) with no new permit activity recorded in 2.9 yr. High-impact scale ($871,339 declared valuation across 1 permit).
Entity-resolved builders & contractors in ½ mile: Slm Builders (1 on parcel, 3 in ½ mi · Addition (adds square footage)); John Owens Services (2 on parcel, 2 in ½ mi · HVAC / heat pump); All Bay Construction (1 on parcel, 1 in ½ mi · Other); C Wells Electrical (1 on parcel, 1 in ½ mi · EV charger); Owner Builder (25 in ½ mi · Remodel / interior alteration).
Permit & Project History on This Parcel (5 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B34640 | EV charger | Issued | Iss. Jul 10, 2023 | $1,697 | Level 2 car charger installation 240V — EV Charging Station |
| 161227 | Remodel / interior alteration | Issued | Iss. Apr 10, 2019 | $200,000 | Interior Remdl, Demo Decks, Roofing T.D. 7/31/18 |
| B16891 | HVAC / heat pump | Issued | Iss. Jan 22, 2019 | $6,750 | replace furnace — Replace Mechanical Appliance |
| B13735 | Plumbing / water heater / sewer | Issued | Iss. Nov 15, 2017 | $6,334 | install new tankless water heater — New Plumbing Fixture(s) |
| 154647 | Other | Issued | Iss. Mar 1, 2017 |