658 Goodhill Rd
Kentfield 94904 · Kentfield · Unincorporated Marin · Coordinates: 37.95639, -122.56826
Executive Verdict · Public-Records Synthesis
Zoned RSP-0.5 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 $2,233,000 ($1,965,000–$2,501,000).
Upsides & Opportunities
- ✓ ADU & SB 9 infill pathways screen as likely eligible
Zoned RSP-0.5 supports ministerial ADU/JADU review plus SB 9 both two-unit development and ministerial urban lot split on a 114,301 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 (+$17,280 contributory est.)
Public building records show issued construction/renovation work on this parcel (4 total permits, latest Nov 19, 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
General repair (89164): Pending in review for 5 yr (22.1× the 83d median) — slower than 90% of general repair permits in Unincorporated Marin (median 83d, 90th pct 328d, n=693).
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 (0.5 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:
- 114,301 sq ft (2.62 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 658 GOODHILL RD
Zoning & Land Use
RSP-0.5 — Residential Single Family Planned (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned RSP-0.5 (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotLikely eligible
Zoned RSP-0.5, a single-family residential zone.
- SB 9: split into two lotsLikely eligible
Zoned RSP-0.5, a single-family residential zone. The lot is 114,301 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: $1,965,000 – $2,501,000 · 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
Nearby Activity (½ mile radius, since November 2024)
11 active or recent development projects (11 housing units across completed, permitted, and pipeline stages) and 108 total building permits recorded within ½ mile.
- New construction5 permits (2 units)
- Adds housing (ADU)6 permits (6 units)
- Demolition1 permit
- Additions & renovations14 permits
- Building systems61 permits
- Repairs8 permits
- Other13 permits
Developments Deserving Closer Investigation & Active Area Builders
- Accessory dwelling unit at 432 Woodland Rd (Applied)0.5 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).
- General repair (89164) (Applied)On this parcel
Pending in review for 5 yr (22.1× the 83d median) — slower than 90% of general repair permits in Unincorporated Marin (median 83d, 90th pct 328d, n=693).
- New home at 15 Spring Rd (Issued)0.19 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)0.39 mi NE
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: Earthwise Energy Solutions (1 on parcel, 1 in ½ mi · Solar / battery storage); Shelter Roofing (1 on parcel, 1 in ½ mi · Roof replacement); Owner Builder (13 in ½ mi · Remodel / interior alteration); Kasten Builders (8 in ½ mi · New garage / accessory structure); Peterson Construction And Development (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 |
|---|---|---|---|---|---|
| B44799 | Solar / battery storage | Issued | Iss. Nov 19, 2025 | $70,007 | 11.48 kW Solar Project including a 40.5 kWh Battery System |
| 89164 | General repair | Applied | App. Nov 4, 2021 | $100,000 | Retaining Wall For Patio Expansion |
| B15570 | Roof replacement | Issued | Iss. Jul 31, 2018 | $70,000 | Tear off roof. Install 24 gauge Standing Seam metal roof panels, GAF VersaShield Solo Fire-Resistant slip sheet and poly… |
| 147729 | Plumbing / water heater / sewer | Issued | Iss. Jun 25, 2015 | $5,400 | Replace Water Heater |