65 Corte De Sabla
Greenbrae 94904 · Kentfield · Unincorporated Marin · Coordinates: 37.94682, -122.52106
Executive Verdict · Public-Records Synthesis
Zoned R1-B2 in Unincorporated Marin with likely ADU & SB 9 infill eligibility and zero mapped flood, fire, or fault hazard overlaps; benchmark value $2,397,000 ($2,109,000–$2,685,000).
Upsides & Opportunities
- ✓ ADU & SB 9 infill pathways screen as likely eligible
Zoned R1-B2 supports ministerial ADU/JADU review plus SB 9 both two-unit development and ministerial urban lot split on a 14,462 sq ft lot. Local precedent is active with 2 ADU permits within ¼ mile over the last 36 months.
Source: Unincorporated Marin zoning · CA Gov. Code 66314 & 65852.21
- ✓ Documented permitted upgrades (+$25,315 contributory est.)
Public building records show issued construction/renovation work on this parcel (4 total permits, latest Mar 23, 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: 0.2% annual chance flood hazard (shaded X))
about 29% 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)
- ! 6 slow or stalled nearby projects within ½ mile
Closest lead: 1000 Drakes Landing Road (0.17 mi S, entitled). 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 (~$28,016/yr at $2,397,000)
Sale triggers reassessment to 1.00% base + ~0.15% voter debt (~$2,335/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:
- 14,462 sq ft (0.33 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 65 CORTE DE SABLA
Zoning & Land Use
R1-B2 — Residential Single Family (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned R1-B2 (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotLikely eligible
Zoned R1-B2, a single-family residential zone.
- SB 9: split into two lotsLikely eligible
Zoned R1-B2, a single-family residential zone. The lot is 14,462 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 29% of the lot); Zone X: minimal flood hazard (about 71% of the lot) · FIRM panel 06041C0459F, 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: $2,109,000 – $2,685,000 · 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
- 1000 Drakes Landing Road (Entitled)0.17 mi S
In "Entitled" for 2.1 yr (since Oct 8, 2024), exceeding the 292d median and 313d 90th percentile for new multifamily / condos / mixed-use permits in Unincorporated Marin (n=21). High-impact scale (19 housing units, 4 deed-restricted affordable across 0 permits).
- New home at 33 Bretano Way (Issued)0.39 mi NW
Active in "Issued" for 19 mo (first record Apr 11, 2025) with no new permit activity recorded in 14 mo. High-impact scale (1 housing unit, $750,000 declared valuation across 1 permit).
- Accessory dwelling unit at 43 Corte Morada (Applied)460 ft NW
In "Applied" for 3 yr (since Nov 6, 2023), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
- Demolition at 10 Corte De Sabla (Applied)0.11 mi N
In "Applied" for 5.7 yr (since Mar 2, 2021), exceeding the 55d median and 261d 90th percentile for demolition permits in Unincorporated Marin (n=130).
Entity-resolved builders & contractors in ½ mile: Sonomarin Solar_inc (1 on parcel, 1 in ½ mi · Solar / battery storage); Wedge Roofing (1 on parcel, 1 in ½ mi · Roof replacement); Make It Right Carpentry (1 on parcel, 1 in ½ mi · Remodel / interior alteration); Solarcraft Services (1 on parcel, 1 in ½ mi · Solar / battery storage); Owner Builder (22 in ½ mi · Remodel / interior alteration).
Permit & Project History on This Parcel (4 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B33116 | Solar / battery storage | Issued | Iss. Mar 23, 2023 | $31,857 | PHOTOVOLTAIC - RESIDENTIAL FLUSH ROOF MOUNT, GRID TIED. 200A MAIN PANEL UPGRADE |
| 173592 | Remodel / interior alteration | Issued | Iss. Mar 16, 2023 | $15,000 | Nonstructral Bathroom Remodel - Express |
| B24839 | Roof replacement | Issued | Iss. Feb 9, 2021 | $18,670 | *** Main Roof*** Remove existing 25 squares roof down to sheathing. Prepare existing sheathing for new roof. Install GAF… |
| 158779 | Solar / battery storage | Issued | Iss. Jun 13, 2018 | $11,238 | Ground-Mount Solar Thermal T D 6/5/18 |