69 Shell Rd
Mill Valley 94941 · Alto · Unincorporated Marin · Coordinates: 37.90598, -122.52331
Parcel & Assessor
- Lot size:
- 11,543 sq ft (0.26 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 69 SHELL RD
Zoning & Land Use
RA-B2 — Residential Agriculture (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned RA-B2 (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotCan't tell
Zoned RA-B2 (single-family residential): we can't tell whether it counts as a single-family zone for SB 9. Residential agriculture, estate and restricted: large-lot residential; confirm SB 9 with the county.
- SB 9: split into two lotsCan't tell
Zoned RA-B2 (single-family residential): we can't tell whether it counts as a single-family zone for SB 9. Residential agriculture, estate and restricted: large-lot residential; confirm SB 9 with the county.
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 AO: 1% annual chance flood (Special Flood Hazard Area) (all of the lot) · FIRM panel 06041C0469F, 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: $2,135,000 – $2,717,000 · Status: Off market
HUD Small Area FMR (ZIP 94941) · FY 2026
Studio $2,730 · 1BR $3,270 · 2BR $3,960 · 3BR $5,060 · 4BR $5,240
Developments Deserving Closer Investigation & Active Area Builders
- Accessory dwelling unit at 69 Shell Rd (Issued)On this parcel
Active in "Issued" for 2.9 yr (first record Dec 11, 2023) with no new permit activity recorded in 2.5 yr.
- New home at 30 Shell Rd (Issued)0.26 mi E
Active in "Issued" for 2.3 yr (first record Jul 5, 2024) with no new permit activity recorded in 22 mo. High-impact scale (1 housing unit, $2,800,000 declared valuation across 1 permit).
- Accessory dwelling unit at 55 Plaza Dr (adu 55a) (Issued)0.32 mi E
Active in "Issued" for 2.5 yr (first record Apr 17, 2024) with no new permit activity recorded in 19 mo. High-impact scale (1 housing unit, $790,000 declared valuation across 1 permit).
- Accessory dwelling unit at 70 Shell Rd (Applied)170 ft N
Active in "Applied" for 4.2 yr (first record Aug 18, 2022) with no new permit activity recorded in 3.6 yr.
Permit & Project History on This Parcel (2 permits, 1 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 176448 | Accessory dwelling unit (new or conversion) | Issued | Iss. Apr 22, 2024 | $185,000 | Convert (E) Single Car Garage To (N) A D U W/ Storage Loft |
| B33458 | Solar / battery storage | Issued | Iss. Apr 16, 2023 | $11,000 | 6.0 PV solar system, no batteries |