333 Arroyo Rd
Lagunitas 94938 · San Geronimo Valley · Unincorporated Marin · Coordinates: 38.02076, -122.70594
Executive Verdict · Public-Records Synthesis
Zoned ARP-2-SGV in Unincorporated Marin and mapped CAL FIRE high fire hazard severity zone (state responsibility area) due diligence; benchmark value $1,193,000 ($1,050,000–$1,336,000).
Upsides & Opportunities
- ✓ Documented permitted upgrades (+$31,140 contributory est.)
Public building records show issued construction/renovation work on this parcel (4 total permits, latest Apr 24, 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)
- ! Delayed or open permit activity on this parcel
Solar / battery storage (91056): Pending in review for 3.6 yr — slower than 90% of solar / battery storage permits in Unincorporated Marin (median 0d, 90th pct 2d, n=2,977).
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: New home (0.24 mi SE, 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)
Parcel & Assessor
- Lot size:
- 67,170 sq ft (1.54 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 333 ARROYO RD
Zoning & Land Use
ARP-2-SGV — Agriculture Residential Planned (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADUCan't tell
Zoned ARP-2-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-2-SGV (agricultural), not a single-family residential zone.
- SB 9: split into two lotsUnlikely
Zoned ARP-2-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: $1,050,000 – $1,336,000 · Status: Off market
HUD Small Area FMR (ZIP 94938) · FY 2026
Studio $2,170 · 1BR $2,610 · 2BR $3,150 · 3BR $4,020 · 4BR $4,200
Developments Deserving Closer Investigation & Active Area Builders
- Solar / battery storage (91056) (Applied)On this parcel
Pending in review for 3.6 yr — slower than 90% of solar / battery storage permits in Unincorporated Marin (median 0d, 90th pct 2d, n=2,977).
- New home (Entitled)0.24 mi SE
In "Entitled" for 2.1 yr (since Oct 4, 2024), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
- Accessory dwelling unit at 5 Barranca Rd (Applied)0.24 mi E
In "Applied" for 7.8 yr (since Feb 7, 2019), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
- New home at 338 Arroyo Rd (Issued)340 ft S
Active in "Issued" for 12.5 yr (first record Apr 28, 2014) with no new permit activity recorded in 11.6 yr.
Entity-resolved builders & contractors in ½ mile: Ally Electric And Solar (1 on parcel, 1 in ½ mi · Solar / battery storage); Alco Building Solutions (1 on parcel, 1 in ½ mi · Solar / battery storage); Pac Solar (1 on parcel, 1 in ½ mi · Solar / battery storage); Owner Builder (6 in ½ mi · Accessory dwelling unit (new or conversion)); Owner (4 in ½ mi · Addition (adds square footage)).
Permit & Project History on This Parcel (4 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B33573 | Solar / battery storage | Issued | Iss. Apr 24, 2023 | $60,566 | Installation of 6.4 kW DC solar system and 20.2 kWh AC grid tied backup battery system composed of: QCELL (16) Q.PEAK DU… |
| 91056 | Solar / battery storage | Applied | App. Apr 24, 2023 | — | Rooftop Pv |
| B30655 | Solar / battery storage | Issued | Iss. Aug 8, 2022 | $26,000 | Install Battery Storage System that will tie into existing solar. |
| 157077 | Solar / battery storage | Issued | Iss. Nov 16, 2017 | $19,000 | 8.64kw Rooftop Photovoltaic- Express (E-Inspection) |