404 San Francisco Blvd
San Anselmo 94960 · Sleepy Hollow · Unincorporated Marin · Coordinates: 37.98918, -122.56126
Executive Verdict · Public-Records Synthesis
Zoned R1-HOD 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 $1,997,000 ($1,757,000–$2,237,000).
Upsides & Opportunities
- ✓ ADU & SB 9 infill pathways screen as likely eligible
Zoned R1-HOD supports ministerial ADU/JADU review plus SB 9 both two-unit development and ministerial urban lot split on a 33,672 sq ft lot. Local precedent is active with 1 ADU permit within ¼ mile over the last 36 months.
Source: Unincorporated Marin zoning · CA Gov. Code 66314 & 65852.21
- ✓ 2 documented municipal building permits on file
On-parcel permit history is indexed through Oct 28, 2026, letting you verify roof, HVAC, electrical, or structural work against seller disclosures.
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: Accessory dwelling unit at 183 Sacramento Ave A D U 183 A (0.24 mi W, issued). 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 (~$23,416/yr at $1,997,000)
Sale triggers reassessment to 1.00% base + ~0.15% voter debt (~$1,951/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:
- 33,672 sq ft (0.77 ac)
- Assessor use:
- Multiple-Resid. - Improved
- Addresses on lot:
- 404 SAN FRANCISCO BLVD
Zoning & Land Use
R1-HOD — Residential Single Family (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned R1-HOD (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotLikely eligible
Zoned R1-HOD, a single-family residential zone.
- SB 9: split into two lotsLikely eligible
Zoned R1-HOD, a single-family residential zone. The lot is 33,672 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 06041C0456F, 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: $1,757,000 – $2,237,000 · 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
- Accessory dwelling unit at 183 Sacramento Ave A D U 183 A (Issued)0.24 mi W
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).
- New home (Entitled)0.41 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).
- New home at 302 Los Angeles Blvd (Issued)0.12 mi SW
Active in "Issued" for 12.6 yr (first record Apr 22, 2014) with no new permit activity recorded in 12.2 yr.
- Demolition at 295 Los Angeles Blvd (Issued)0.12 mi SW
Active in "Issued" for 10.4 yr (first record Jun 14, 2016) with no new permit activity recorded in 10.2 yr.
Entity-resolved builders & contractors in ½ mile: Johnson And Johnson Electric (1 on parcel, 1 in ½ mi · Electrical / panel); Dickson (1 on parcel, 1 in ½ mi · Other); Owner Builder (11 in ½ mi · Addition (adds square footage)); Jungsten Constr (3 in ½ mi · New garage / accessory structure); Owner (3 in ½ mi · New garage / accessory structure).
Permit & Project History on This Parcel (2 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B48936 | Electrical / panel | Issued | Iss. Oct 28, 2026 | $5,000 | Service Upgrade |
| B34296 | Other | Issued | Iss. Jun 14, 2023 | $2,800 | Replacefurnace — Replace Mechanical Appliance |