322 San Francisco Blvd
San Anselmo 94960 · Sleepy Hollow · Unincorporated Marin · Coordinates: 37.98784, -122.56311
Executive Verdict · Public-Records Synthesis
Zoned R1 in Unincorporated Marin with likely ADU & SB 9 infill eligibility and mapped CAL FIRE moderate fire hazard severity zone (state responsibility area) due diligence; benchmark value $1,830,000 ($1,610,000–$2,050,000).
Upsides & Opportunities
- ✓ ADU & SB 9 infill pathways screen as likely eligible
Zoned R1 supports ministerial ADU/JADU review plus SB 9 both two-unit development and ministerial urban lot split on a 7,231 sq ft lot. Local precedent is active with 2 ADU permits within ¼ mile over the last 36 months.
Source: Unincorporated Marin zoning · CA Gov. Code 66314 & 65852.21
- ✓ Documented permitted upgrades (+$11,520 contributory est.)
Public building records show issued construction/renovation work on this parcel (7 total permits, latest Nov 20, 2020).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (parcel APN)
- ✓ Above-average reinvestment in Sleepy Hollow
32 substantial renovation & housing permits over 24 months (32.7 per 1,000 parcels vs. 16.4 citywide baseline) (#4 of 22 neighborhoods).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (Sleepy Hollow)
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 Moderate 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)
- ! 6 slow or stalled nearby projects within ½ mile
Closest lead: New home (0.27 mi SW, entitled). Inspect timeline history before assuming near-term completion.
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · HCD APR (½-mile radius)
- ! Year 1 Prop 13 tax reset (~$21,495/yr at $1,830,000)
Sale triggers reassessment to 1.00% base + ~0.15% voter debt (~$1,791/mo). Confirm exact Mello-Roos / CFD special assessments on the county tax bill.
Source: CA Const. Art. XIIIA (Prop 13) · County Tax Collector
Parcel & Assessor
- Lot size:
- 7,231 sq ft (0.17 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 322 SAN FRANCISCO BLVD
Zoning & Land Use
R1 — Residential Single Family (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned R1 (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotLikely eligible
Zoned R1, a single-family residential zone.
- SB 9: split into two lotsLikely eligible
Zoned R1, a single-family residential zone. The lot is 7,231 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 06041C0452E, effective March 17, 2014
- CGS Alquist-Priolo Earthquake Fault Zone
- Not in an Alquist-Priolo Earthquake Fault Zone
Surrounding Rent & Value Benchmarks (Public Records)
Range: $1,610,000 – $2,050,000 · 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 (Entitled)0.27 mi SW
In "Entitled" for 6 yr (since Oct 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 183 Sacramento Ave A D U 183 A (Issued)0.2 mi NW
Active in "Issued" for 2.8 yr (first record Jan 9, 2024) with no new permit activity recorded in 9 mo. High-impact scale (1 housing unit, $2,100,000 declared valuation across 1 permit).
- Demolition at 295 Los Angeles Blvd (Issued)140 ft E
Active in "Issued" for 10.4 yr (first record Jun 14, 2016) with no new permit activity recorded in 10.2 yr.
- New home at 302 Los Angeles Blvd (Issued)240 ft E
Active in "Issued" for 12.6 yr (first record Apr 22, 2014) with no new permit activity recorded in 12.2 yr.
Entity-resolved builders & contractors in ½ mile: Owner (1 on parcel, 4 in ½ mi · New garage / accessory structure); Pagan Construction (1 on parcel, 1 in ½ mi · New garage / accessory structure); Armstrong Installation Service A California Corpor (1 on parcel, 1 in ½ mi · Roof replacement); Hassler Heating And Air (1 on parcel, 1 in ½ mi · HVAC / heat pump); Tesla Energy (1 on parcel, 1 in ½ mi · Solar / battery storage).
Permit & Project History on This Parcel (7 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 166333 | Solar / battery storage | Issued | Iss. Nov 20, 2020 | $14,000 | Energy Storing System 27kw |
| B16513 | HVAC / heat pump | Issued | Iss. Nov 20, 2018 | $7,000 | Install Carrier Horizontal Discharge Air Conditioner. Run a 220v circuit from the main panel at the front of the home to… |
| 160104 | Solar / battery storage | Issued | Iss. Nov 13, 2018 | $10,000 | Pv 4.970 Kw Expressw |
| B16052 | Roof replacement | Issued | Iss. Oct 17, 2018 | $24,268 | Sweep existing built-up roof. Apply foam overlay to roof. 17 sqs. Apply foam to new roof section. .5 sqs — ReRoofing |
| 159697 | New garage / accessory structure | Issued |