22 A Sage Ln
San Geronimo 94963 · San Geronimo Valley · Unincorporated Marin · Coordinates: 38.01702, -122.68448
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 $1,529,000 ($1,346,000–$1,712,000).
Upsides & Opportunities
- ✓ Documented permitted upgrades (+$189,506 contributory est.)
Public building records show issued construction/renovation work on this parcel (3 total permits, latest May 29, 2025).
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)
- ! Delayed or open permit activity on this parcel
Accessory dwelling unit at 22 (22a) Sage Ln: Active in "Issued" for 3.9 yr (first record Dec 12, 2022) with no new permit activity recorded in 17 mo.
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (review-time benchmark)
- ! 4 slow or stalled nearby projects within ½ mile
Closest lead: Accessory dwelling unit at 103 Juarez Ave (0.21 mi SW, 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)
Parcel & Assessor
- Lot size:
- 51,924 sq ft (1.19 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 22A SAGE LN; 22 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: $1,346,000 – $1,712,000 · 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)On this parcel
Active in "Issued" for 3.9 yr (first record Dec 12, 2022) with no new permit activity recorded in 17 mo.
- Accessory dwelling unit (new or conversion) (179350) (Issued)On this parcel
Issued after 2.5 yr (4.4× the 204d median) — slower than 90% of accessory dwelling unit (new or conversion) permits in Unincorporated Marin (median 204d, 90th pct 549d, n=298).
- Accessory dwelling unit at 103 Juarez Ave (Issued)0.21 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)0.27 mi SW
Active in "Issued" for 10.2 yr (first record Aug 31, 2016) with no new permit activity recorded in 9.7 yr.
Entity-resolved builders & contractors in ½ mile: Quattro Solar (2 on parcel, 2 in ½ mi · Electrical / panel); True Blue Builders (1 on parcel, 1 in ½ mi · Accessory dwelling unit (new or conversion)); Owner Builder (8 in ½ mi · Accessory dwelling unit (new or conversion)); Owner (7 in ½ mi · Accessory dwelling unit (new or conversion)); Zia Designs (2 in ½ mi · Demolition).
Permit & Project History on This Parcel (3 permits, 1 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 179350 | Accessory dwelling unit (new or conversion) | Issued | Iss. May 29, 2025 | $35,000 | Legalize Converted (E) Detached Garage To A D U - B W O P |
| 152087 | Electrical / panel | Issued | Iss. May 23, 2016 | $500 | E V Charger 240 V |
| 150737 | Solar / battery storage | Issued | Iss. Feb 10, 2016 | $13,800 | P V Sys 4.59 K W - Express - E-Insp |
State HCD Housing Element APR records on this parcel: 1 entry (report years 2025).