15 Sage Ln
San Geronimo 94963 · San Geronimo Valley · Unincorporated Marin · Coordinates: 38.01633, -122.68438
Executive Verdict · Public-Records Synthesis
Zoned ARP-20-SGV in Unincorporated Marin and mapped CAL FIRE high fire hazard severity zone (state responsibility area) due diligence; benchmark value $1,206,000 ($1,061,000–$1,351,000).
Upsides & Opportunities
- ✓ Documented permitted upgrades (+$21,425 contributory est.)
Public building records show issued construction/renovation work on this parcel (5 total permits, latest Aug 23, 2023).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (parcel APN)
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 High 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)
- ! 6 slow or stalled nearby projects within ½ mile
Closest lead: Accessory dwelling unit at 22 (22a) Sage Ln (260 ft N, issued). 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 (~$14,319/yr at $1,206,000)
Sale triggers reassessment to 1.00% base + ~0.15% voter debt (~$1,193/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:
- 4,966 sq ft (0.11 ac)
- Assessor use:
- Exemption - Improved
- Addresses on lot:
- 15 SAGE LN
Zoning & Land Use
ARP-20-SGV — Agriculture Residential Planned (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADUCan't tell
Zoned ARP-20-SGV (agricultural): ADUs are allowed if the zone allows a home, which depends on the zone's rules.
- SB 9: two homes on the lotUnlikely
Zoned ARP-20-SGV (agricultural), not a single-family residential zone.
- SB 9: split into two lotsUnlikely
Zoned ARP-20-SGV (agricultural), not a single-family residential zone.
Mapped Hazard Zones on This Lot
- CAL FIRE Fire Hazard Severity Zone
- High 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 06041C0275D, effective May 4, 2009
- CGS Alquist-Priolo Earthquake Fault Zone
- Not in an Alquist-Priolo Earthquake Fault Zone
Surrounding Rent & Value Benchmarks (Public Records)
Range: $1,061,000 – $1,351,000 · Status: Off market
HUD Small Area FMR (ZIP 94963) · FY 2026
Studio $2,500 · 1BR $3,000 · 2BR $3,630 · 3BR $4,630 · 4BR $4,800
Developments Deserving Closer Investigation & Active Area Builders
- Accessory dwelling unit at 22 (22a) Sage Ln (Issued)260 ft N
Active in "Issued" for 3.9 yr (first record Dec 12, 2022) with no new permit activity recorded in 17 mo.
- Accessory dwelling unit at 103 Juarez Ave (Issued)0.17 mi SW
Active in "Issued" for 5.2 yr (first record Aug 24, 2021) with no new permit activity recorded in 4.1 yr.
- New home at 42 Juarez Ave (Issued)0.24 mi SW
Active in "Issued" for 10.2 yr (first record Aug 31, 2016) with no new permit activity recorded in 9.7 yr.
- Demolition at 2 Juarez Ave (Issued)0.27 mi SW
Active in "Issued" for 9.9 yr (first record Dec 28, 2016) with no new permit activity recorded in 8.9 yr.
Entity-resolved builders & contractors in ½ mile: Sun First (1 on parcel, 1 in ½ mi · Solar / battery storage); Sonomarin Solar_inc (1 on parcel, 1 in ½ mi · Solar / battery storage); Ernest Ongaro And Sons (1 on parcel, 1 in ½ mi · HVAC / heat pump); John A Young (1 on parcel, 1 in ½ mi · Electrical / panel); Owner Builder (9 in ½ mi · Accessory dwelling unit (new or conversion)).
Permit & Project History on This Parcel (5 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B35163 | Solar / battery storage | Issued | Iss. Aug 23, 2023 | $21,375 | AC coupled Battery Installation with Electriq Power Powerpod 2 10kwh Battery unit |
| B23368 | HVAC / heat pump | Issued | Iss. Aug 26, 2020 | $8,000 | Install 3 zone ductless mini split new to service 2 bedrooms and living room — Mechanical Appliance |
| 165035 | HVAC / heat pump | Issued | Iss. Jul 1, 2020 | $5,784 | Heatpump Water Heater, On Concrete Pad |
| B19851 | Electrical / panel | Issued | Iss. Sep 12, 2019 | $7,500 | Upgrade main panel from 100 amp to 200 amp — Service Upgrade |
| 161276 | Solar / battery storage | Issued | Iss. Apr 17, 2019 |