283 Greene St
Mill Valley 94941 · Almonte · Unincorporated Marin · Coordinates: 37.88198, -122.52800
Parcel & Assessor
- Lot size:
- 6,752 sq ft (0.16 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 283 GREENE ST
Zoning & Land Use
R1-B1 — Residential Single Family (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned R1-B1 (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotLikely eligible
Zoned R1-B1, a single-family residential zone.
- SB 9: split into two lotsLikely eligible
Zoned R1-B1, a single-family residential zone. The lot is 6,752 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
- Not in a State-mapped fire hazard severity zone
- FEMA National Flood Hazard Layer
- Zone X: minimal flood hazard (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: $1,848,000 – $2,352,000 · 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
- New home at 217 Cleveland Ave (Issued)0.21 mi N
Active in "Issued" for 9.7 yr (first record Feb 21, 2017) with no new permit activity recorded in 2.3 yr. High-impact scale (1 housing unit, $875,000 declared valuation across 1 permit).
- Accessory dwelling unit at 131 Yale Ave A (Issued)0.41 mi N
Active in "Issued" for 4.8 yr (first record Jan 19, 2022) with no new permit activity recorded in 3.4 yr. High-impact scale (1 housing unit, $1,000,000 declared valuation across 1 permit).
- New home at 290 Greene St (Issued)390 ft SW
Active in "Issued" for 3.2 yr (first record Aug 14, 2023) with no new permit activity recorded in 3.2 yr.
- Accessory dwelling unit at 300 Morning Sun Ave (adu 300a) (Issued)0.11 mi SW
Active in "Issued" for 2.6 yr (first record Apr 2, 2024) with no new permit activity recorded in 19 mo.
Permit & Project History on This Parcel (3 permits, 1 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 94277 | Accessory dwelling unit (new or conversion) | Applied | App. Jun 4, 2026 | $300,000 | New 790 Sq Ft Detached A D U With Deck |
| B45779 | EV charger | Issued | Iss. Feb 6, 2026 | $4,000 | Service Upgrade, EV Charging Station |
| B28017 | Plumbing / water heater / sewer | Issued | Iss. Dec 7, 2021 | $4,200 | Replace existing 50 gallon water heater — Replace Plumbing Fixtures(s) |