8 Chaparral Ln
San Geronimo 94963 · San Geronimo Valley · Unincorporated Marin · Coordinates: 38.01050, -122.65126
Executive Verdict · Public-Records Synthesis
Zoned RSP-0.05-SGV in Unincorporated Marin with likely ADU & SB 9 infill eligibility and mapped CAL FIRE high fire hazard severity zone (state responsibility area) due diligence; benchmark value $1,203,000 ($1,059,000–$1,347,000).
Upsides & Opportunities
- ✓ ADU & SB 9 infill pathways screen as likely eligible
Zoned RSP-0.05-SGV supports ministerial ADU/JADU review plus SB 9 both two-unit development and ministerial urban lot split on a 116,087 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
- ✓ 5 documented municipal building permits on file
On-parcel permit history is indexed through Sep 14, 2026, letting you verify roof, HVAC, electrical, or structural work against seller disclosures.
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: Demolition at 16 Meadow View Ln (0.25 mi W, 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 (~$14,285/yr at $1,203,000)
Sale triggers reassessment to 1.00% base + ~0.15% voter debt (~$1,190/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:
- 116,087 sq ft (2.66 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 8 CHAPARRAL LN
Zoning & Land Use
RSP-0.05-SGV — Residential Single Family Planned (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned RSP-0.05-SGV (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotLikely eligible
Zoned RSP-0.05-SGV, a single-family residential zone.
- SB 9: split into two lotsLikely eligible
Zoned RSP-0.05-SGV, a single-family residential zone. The lot is 116,087 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
- 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: $1,059,000 – $1,347,000 · 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
Nearby Activity (½ mile radius, since November 2024)
1 active or recent development project (1 housing units across completed, permitted, and pipeline stages) and 36 total building permits recorded within ½ mile.
- New construction2 permits
- Adds housing (ADU)1 permit (1 units)
- Demolition1 permit
- Additions & renovations1 permit
- Building systems20 permits
- Other11 permits
Developments Deserving Closer Investigation & Active Area Builders
- Demolition at 16 Meadow View Ln (Applied)0.25 mi W
In "Applied" for 8.5 yr (since May 29, 2018), exceeding the 55d median and 261d 90th percentile for demolition permits in Unincorporated Marin (n=130).
- Demolition at 0 Sylvan Way (Applied)0.25 mi E
In "Applied" for 2.6 yr (since Apr 22, 2024), exceeding the 55d median and 261d 90th percentile for demolition permits in Unincorporated Marin (n=130).
- Accessory dwelling unit at 209 San Geronimo Valley Dr (Applied)0.29 mi NE
In "Applied" for 6.3 yr (since Jul 28, 2020), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
- New home at 2 Osprey Trl (Issued)390 ft S
Active in "Issued" for 14.6 yr (first record Mar 27, 2012) with no new permit activity recorded in 12.7 yr.
Entity-resolved builders & contractors in ½ mile: Owner (1 on parcel, 5 in ½ mi · New garage / accessory structure); Juan Calmell (1 on parcel, 4 in ½ mi · New single-family home); American Home Renewal (1 on parcel, 1 in ½ mi · Windows / doors / siding); Reyes Heating And Air (1 on parcel, 1 in ½ mi · HVAC / heat pump); Earthwise Energy Solutions (1 on parcel, 1 in ½ mi · Other).
Permit & Project History on This Parcel (5 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B48318 | Other | Issued | Iss. Sep 14, 2026 | $15,000 | — |
| B48063 | Other | Issued | Iss. Aug 25, 2026 | $17,975 | — |
| B42642 | HVAC / heat pump | Issued | Iss. Jun 4, 2025 | $22,500 | furnace Ac and ducts replacement. remove the existing unites and install the new mitsubishi heat pump system one indoor … |
| B30034 | Windows / doors / siding | Issued | Iss. Jun 14, 2022 | $120,000 | Replace siding on all sides of home. Remove existing cedar. Install James Hardie fiber cement lap siding. — Siding Repla… |
| 143834 | Solar / battery storage | Issued | Iss. Aug 21, 2014 | $10,000 | Roof Mounted Photovoltaic - Express (As-Built) |