1011 Trillium Ln
Mill Valley 94941 · Tamalpais · Unincorporated Marin · Coordinates: 37.88667, -122.54568
Parcel & Assessor
- Lot size:
- 7,275 sq ft (0.17 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 1011 TRILLIUM LN
Zoning & Land Use
RSP-2 — Residential Single Family Planned (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned RSP-2 (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotLikely eligible
Zoned RSP-2, a single-family residential zone.
- SB 9: split into two lotsLikely eligible
Zoned RSP-2, a single-family residential zone. The lot is 7,275 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 06041C0468F, 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: $1,969,000 – $2,507,000 · 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
- Demolition at 1011 Trillium Ln (Issued)On this parcel
Active in "Issued" for 6.7 yr (first record Feb 11, 2020) with no new permit activity recorded in 6.7 yr.
- New home at 560 Alta Way (Applied)0.29 mi E
Active in "Applied" for 3.2 yr (first record Aug 10, 2023) with no new permit activity recorded in 3.2 yr. High-impact scale (1 housing unit, $975,000 declared valuation across 1 permit).
- New home at 510 Browning Ct (Issued)0.38 mi SE
Active in "Issued" for 10.2 yr (first record Aug 15, 2016) with no new permit activity recorded in 9.9 yr. High-impact scale (1 housing unit, $900,000 declared valuation across 1 permit).
- New home (Entitled)0.13 mi N
Active in "Entitled" for 5.6 yr (first record Apr 5, 2021) with no new permit activity recorded in 5.6 yr.
Permit & Project History on This Parcel (4 permits, 1 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 166699 | Addition (adds square footage) | Issued | Iss. Dec 29, 2020 | $242,000 | Rmdl Fire Dam; Bumpout For Closets On 2nd Fl, Into Existing Liv Sp; Repl /Add Wndws, 2nd Fl; Reroof; Gas Insert T.D. 11-… |
| B22911 | Electrical / panel | Issued | Iss. Jul 20, 2020 | $500 | inspect wiring for fire damage and make safe for power to be turned on — Replace Circuits / Outlets |
| 164186 | Demolition | Issued | Iss. Feb 11, 2020 | $39,972 | Interior Demo For Asbestos Abatement And Fire Debris |
| 147080 | Solar / battery storage | Issued | Iss. May 13, 2015 | $6,325 |