17 Fay Dr
Kentfield 94904 · Kentfield · Unincorporated Marin · Coordinates: 37.95476, -122.53884
Executive Verdict · Public-Records Synthesis
Zoned R1 in Unincorporated Marin with likely ADU & SB 9 infill eligibility and zero mapped flood, fire, or fault hazard overlaps; benchmark value $2,450,000 ($2,156,000–$2,744,000).
Upsides & Opportunities
- ✓ ADU & SB 9 infill pathways screen as likely eligible
Zoned R1 supports ministerial ADU/JADU review plus SB 9 both two-unit development and ministerial urban lot split on a 19,079 sq ft lot. Local precedent is active with 6 ADU permits within ¼ mile over the last 36 months.
Source: Unincorporated Marin zoning · CA Gov. Code 66314 & 65852.21
- ✓ Documented permitted upgrades (+$28,800 contributory est.)
Public building records show issued construction/renovation work on this parcel (7 total permits, latest Mar 5, 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: 0.2% annual chance flood hazard (shaded X))
about 10% of the lot of the parcel intersects Zone X: 0.2% annual chance flood hazard (shaded X). Outside mandatory federal SFHA insurance rules, but check local drainage and finished-floor requirements.
Source: FEMA National Flood Hazard Layer (parcel polygon)
- ! Delayed or open permit activity on this parcel
Plumbing / water heater / sewer (88782): Pending in review for 5.2 yr — slower than 90% of plumbing / water heater / sewer permits in Unincorporated Marin (median 0d, 90th pct 0d, n=2,211).
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 34 Wolfe Grade (0.16 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)
- ! Year 1 Prop 13 tax reset (~$28,625/yr at $2,450,000)
Sale triggers reassessment to 1.00% base + ~0.15% voter debt (~$2,385/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:
- 19,079 sq ft (0.44 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 17 FAY DR
Zoning & Land Use
R1 — Residential Single Family (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned R1 (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotLikely eligible
Zoned R1, a single-family residential zone.
- SB 9: split into two lotsLikely eligible
Zoned R1, a single-family residential zone. The lot is 19,079 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
- Not in a State-mapped fire hazard severity zone
- FEMA National Flood Hazard Layer
- Zone X: 0.2% annual chance flood hazard (shaded X) (about 10% of the lot); Zone X: minimal flood hazard (about 90% 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: $2,156,000 – $2,744,000 · 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 34 Wolfe Grade (Applied)0.16 mi E
In "Applied" for 2.8 yr (since Jan 17, 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, $750,000 declared valuation across 1 permit).
- Plumbing / water heater / sewer (88782) (Applied)On this parcel
Pending in review for 5.2 yr — slower than 90% of plumbing / water heater / sewer permits in Unincorporated Marin (median 0d, 90th pct 0d, n=2,211).
- New home at 105 Oak Ave (Issued)0.2 mi W
Active in "Issued" for 4.3 yr (first record Jul 15, 2022) with no new permit activity recorded in 14 mo. High-impact scale (1 housing unit, $965,000 declared valuation across 3 permits).
- New home at 138 Cypress Ave (Issued)0.34 mi N
Active in "Issued" for 8.6 yr (first record Apr 23, 2018) with no new permit activity recorded in 8.2 yr. High-impact scale (1 housing unit, $1,020,000 declared valuation across 2 permits).
Entity-resolved builders & contractors in ½ mile: Owner Builder (1 on parcel, 63 in ½ mi · Remodel / interior alteration); Hendrickson Pools (4 on parcel, 15 in ½ mi · Pool / spa); Sc Anderson Group International (1 on parcel, 1 in ½ mi · General repair); Owner (53 in ½ mi · Remodel / interior alteration); Levine Design And Construction (9 in ½ mi · New garage / accessory structure).
Permit & Project History on This Parcel (7 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 178778 | General repair | Issued | Iss. Mar 5, 2025 | $25,758 | Water Damage Repair In Laundry Rm And Bedrm |
| 88782 | Plumbing / water heater / sewer | Applied | App. Aug 17, 2021 | $6,000 | 20kw Generator |
| 159501 | Windows / doors / siding | Issued | Iss. Sep 5, 2018 | $10,000 | Window To French Doorwith A Infill Express |
| 156101 | General repair | Issued | Iss. Jul 27, 2017 | $20,000 | Ret Wall - Uphill |
| 156100 | General repair | Issued | Iss. Jul 27, 2017 | $20,000 | Ret Wall @ Patio |