150 Central Ave
Woodacre 94973 · Woodacre · Unincorporated Marin · Coordinates: 38.01129, -122.64145
Executive Verdict · Public-Records Synthesis
Zoned R1-B2-SGV in Unincorporated Marin with likely ADU & SB 9 infill eligibility and mapped CAL FIRE high fire hazard severity zone (state responsibility area) due diligence; benchmark value $1,282,000 ($1,128,000–$1,436,000).
Upsides & Opportunities
- ✓ ADU & SB 9 infill pathways screen as likely eligible
Zoned R1-B2-SGV supports ministerial ADU/JADU review plus SB 9 both two-unit development and ministerial urban lot split on a 9,801 sq ft lot.
Source: Unincorporated Marin zoning · CA Gov. Code 66314 & 65852.21
- ✓ Documented permitted upgrades (+$159,692 contributory est.)
Public building records show issued construction/renovation work on this parcel (6 total permits, latest Sep 2, 2025).
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
Accessory dwelling unit at 156 Central Ave: Active in "Issued" for 3.5 yr (first record May 15, 2023) with no new permit activity recorded in 3.5 yr.
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: Demolition at 0 Sylvan Way (0.29 mi W, applied). 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:
- 9,801 sq ft (0.23 ac)
- Assessor use:
- Multiple-Resid. - Improved
- Addresses on lot:
- 150 CENTRAL AVE; 156 CENTRAL AVE
Zoning & Land Use
R1-B2-SGV — Residential Single Family (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned R1-B2-SGV (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotLikely eligible
Zoned R1-B2-SGV, a single-family residential zone.
- SB 9: split into two lotsLikely eligible
Zoned R1-B2-SGV, a single-family residential zone. The lot is 9,801 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 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: $1,128,000 – $1,436,000 · Status: Off market
HUD Small Area FMR (ZIP 94973) · FY 2026
Studio $2,080 · 1BR $2,510 · 2BR $3,020 · 3BR $3,860 · 4BR $4,000
Developments Deserving Closer Investigation & Active Area Builders
- Accessory dwelling unit at 156 Central Ave (Issued)On this parcel
Active in "Issued" for 3.5 yr (first record May 15, 2023) with no new permit activity recorded in 3.5 yr.
- Demolition at 0 Sylvan Way (Applied)0.29 mi W
In "Applied" for 2.6 yr (since Apr 22, 2024), exceeding the 55d median and 261d 90th percentile for demolition permits in Unincorporated Marin (n=130).
- Accessory dwelling unit at 209 San Geronimo Valley Dr (Applied)0.3 mi W
In "Applied" for 6.3 yr (since Jul 28, 2020), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
- Accessory dwelling unit at 49 Conifer Way A K A (Issued)0.17 mi SW
Active in "Issued" for 7.3 yr (first record Jul 11, 2019) with no new permit activity recorded in 7.2 yr.
Entity-resolved builders & contractors in ½ mile: Owner (1 on parcel, 9 in ½ mi · New garage / accessory structure); Renewal By Andersen (2 on parcel, 2 in ½ mi · Windows / doors / siding); Sunrun Installation Services (1 on parcel, 1 in ½ mi · Solar / battery storage); Crown Ridge Roofing (1 on parcel, 1 in ½ mi · Roof replacement); Peter Levi Plumbing (1 on parcel, 1 in ½ mi · Accessory dwelling unit (new or conversion)).
Permit & Project History on This Parcel (6 permits, 1 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B43700 | Solar / battery storage | Issued | Iss. Sep 2, 2025 | $17,000 | PV INSTALL 5.3KW, 13 MODULES, 1 ESS |
| B33880 | Accessory dwelling unit (new or conversion) | Issued | Iss. May 15, 2023 | $8,000 | *For cottage/ADU* Install Ductless 1.5 ton HP minisplit system with 18k BTU indoor unit — Mechanical Appliance |
| B22322 | Electrical / panel | Issued | Iss. Mar 16, 2020 | $1,365 | remove old panel and meter socket & mount new 200A — Service Upgrade |
| B18348 | Roof replacement | Issued | Iss. Jul 23, 2019 | $12,941 |