665 Goodhill Rd
Kentfield 94904 · Kentfield · Unincorporated Marin · Coordinates: 37.95567, -122.56714
Executive Verdict · Public-Records Synthesis
Zoned RSP-1 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 $2,485,000 ($2,187,000–$2,783,000).
Upsides & Opportunities
- ✓ ADU & SB 9 infill pathways screen as likely eligible
Zoned RSP-1 supports ministerial ADU/JADU review plus SB 9 both two-unit development and ministerial urban lot split on a 49,702 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 (+$15,840 contributory est.)
Public building records show issued construction/renovation work on this parcel (4 total permits, latest Jun 13, 2025).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (parcel APN)
- ✓ Above-average reinvestment in Kentfield
103 substantial renovation & housing permits over 24 months (40.9 per 1,000 parcels vs. 16.3 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
Windows / doors / siding (93230): Pending in review for 18 mo — slower than 90% of windows / doors / siding permits in Unincorporated Marin (median 0d, 90th pct 5d, n=1,477).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (review-time benchmark)
- ! 5 slow or stalled nearby projects within ½ mile
Closest lead: Accessory dwelling unit at 432 Woodland Rd (0.42 mi SE, 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:
- 49,702 sq ft (1.14 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 665 GOODHILL RD
Zoning & Land Use
RSP-1 — Residential Single Family Planned (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned RSP-1 (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotLikely eligible
Zoned RSP-1, a single-family residential zone.
- SB 9: split into two lotsLikely eligible
Zoned RSP-1, a single-family residential zone. The lot is 49,702 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 06041C0454E, effective March 17, 2014
- CGS Alquist-Priolo Earthquake Fault Zone
- Not in an Alquist-Priolo Earthquake Fault Zone
Surrounding Rent & Value Benchmarks (Public Records)
Range: $2,187,000 – $2,783,000 · 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
- Accessory dwelling unit at 432 Woodland Rd (Applied)0.42 mi SE
In "Applied" for 2.6 yr (since Apr 12, 2024), 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, $1,250,000 declared valuation across 1 permit).
- Windows / doors / siding (93230) (Applied)On this parcel
Pending in review for 18 mo — slower than 90% of windows / doors / siding permits in Unincorporated Marin (median 0d, 90th pct 5d, n=1,477).
- New home at 15 Spring Rd (Issued)0.11 mi SE
Active in "Issued" for 11.4 yr (first record Jun 24, 2015) with no new permit activity recorded in 11.1 yr. High-impact scale (1 housing unit, $2,745,000 declared valuation across 1 permit).
- Rafenelli- Goodenoff (Issued)0.42 mi N
Active in "Issued" for 9.3 yr (first record Jul 13, 2017) with no new permit activity recorded in 9.3 yr. High-impact scale (1 housing unit, 1 deed-restricted affordable across 0 permits).
Entity-resolved builders & contractors in ½ mile: Gubbins Building (1 on parcel, 3 in ½ mi · New single-family home); Metal Roof (1 on parcel, 1 in ½ mi · Roof replacement); Sun First (1 on parcel, 1 in ½ mi · Solar / battery storage); Owner Builder (17 in ½ mi · Remodel / interior alteration); Kasten Builders (8 in ½ mi · New garage / accessory structure).
Permit & Project History on This Parcel (4 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B42757 | Windows / doors / siding | Issued | Iss. Jun 13, 2025 | $500,000 | In kind window replacement — Non-structural Door/Window Replacement |
| 93230 | Windows / doors / siding | Applied | App. May 28, 2025 | $900,000 | Structural Doors And Windows |
| B39148 | Roof replacement | Issued | Iss. Aug 16, 2024 | $185,000 | INTSTALL CLASS A 24 GAUGE STEEL STANDING SEAM ROOF AND GUTTERS — ReRoofing |
| B36490 | Solar / battery storage | Issued | Iss. Dec 20, 2023 | $49,259 | Remove existing PV system and replace with (23) new panels and (23) micro-inverters, (2) wall mounted batteries, (1) 200… |