830 Butterfield Rd
San Anselmo 94960 · Sleepy Hollow · Unincorporated Marin · Coordinates: 38.00302, -122.57454
Parcel & Assessor
- Lot size:
- 20,952 sq ft (0.48 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 830 BUTTERFIELD RD
Zoning & Land Use
R1-BD — Residential Single Family (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned R1-BD (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotLikely eligible
Zoned R1-BD, a single-family residential zone.
- SB 9: split into two lotsLikely eligible
Zoned R1-BD, a single-family residential zone. The lot is 20,952 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
- Moderate 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 06041C0289D, 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: $1,772,000 – $2,256,000 · Status: Off market
HUD Small Area FMR (ZIP 94960) · FY 2026
Studio $2,510 · 1BR $3,010 · 2BR $3,640 · 3BR $4,650 · 4BR $4,820
Developments Deserving Closer Investigation & Active Area Builders
- New home at 830 Butterfield Rd (Issued)On this parcel
Active in "Issued" for 8.2 yr (first record Aug 9, 2018) with no new permit activity recorded in 7.5 yr. High-impact scale (1 housing unit, $1,097,000 declared valuation across 2 permits).
- New home at 666 Fawn Dr (Applied)0.45 mi E
Active in "Applied" for 7.5 yr (first record Apr 29, 2019) with no new permit activity recorded in 7.5 yr. High-impact scale (1 housing unit, $1,000,000 declared valuation across 1 permit).
- New home at 116 Holstein Rd (Issued)0.46 mi S
Active in "Issued" for 12.8 yr (first record Dec 24, 2013) with no new permit activity recorded in 12.4 yr. High-impact scale (1 housing unit, $800,000 declared valuation across 1 permit).
- Demolition at 854 Butterfield Ln (Applied)270 ft NE
Active in "Applied" for 2.2 yr (first record Aug 1, 2024) with no new permit activity recorded in 2.2 yr.
Permit & Project History on This Parcel (7 permits, 1 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B48819 | Other | Issued | Iss. Oct 19, 2026 | $46,696 | — |
| 167525 | Solar / battery storage | Issued | Iss. Mar 24, 2021 | $52,150 | 16.32 Kv Rooftop Photovoltaic System And Energy Storage System. |
| 164861 | Pool / spa | Issued | Iss. Jun 10, 2020 | $75,000 | Pool W/Spa **In Plc Of Trkg #82418; Deferred From Per. # 161273 Not 3rd Prty.** T.D. 4-2-20 |
| 161273 | New single-family home | Issued | Iss. Apr 16, 2019 | $1,097,000 | Sfd, Garage, Decks |