148 Sacramento Ave
San Anselmo 94960 · Sleepy Hollow · Unincorporated Marin · Coordinates: 37.98908, -122.56442
Executive Verdict · Public-Records Synthesis
Zoned R1-B2 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 $1,903,000 ($1,675,000–$2,131,000).
Upsides & Opportunities
- ✓ ADU & SB 9 infill pathways screen as likely eligible
Zoned R1-B2 supports ministerial ADU/JADU review plus SB 9 both two-unit development and ministerial urban lot split on a 12,502 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
- ✓ Documented permitted upgrades (+$6,080 contributory est.)
Public building records show issued construction/renovation work on this parcel (3 total permits, latest Mar 5, 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: Accessory dwelling unit at 183 Sacramento Ave A D U 183 A (470 ft NW, 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 (~$22,335/yr at $1,903,000)
Sale triggers reassessment to 1.00% base + ~0.15% voter debt (~$1,861/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:
- 12,502 sq ft (0.29 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 148 SACRAMENTO AVE
Zoning & Land Use
R1-B2 — Residential Single Family (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned R1-B2 (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotLikely eligible
Zoned R1-B2, a single-family residential zone.
- SB 9: split into two lotsLikely eligible
Zoned R1-B2, a single-family residential zone. The lot is 12,502 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: $1,675,000 – $2,131,000 · 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)470 ft 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).
- New home (Entitled)0.31 mi S
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 (Entitled)0.47 mi W
In "Entitled" for 6.5 yr (since Apr 26, 2020), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
- New home at 140 Sacramento Ave (Issued)170 ft E
Active in "Issued" for 11.4 yr (first record Jun 11, 2015) with no new permit activity recorded in 10.1 yr.
Entity-resolved builders & contractors in ½ mile: Norcal Home (1 on parcel, 1 in ½ mi · Solar / battery storage); Moore Services (1 on parcel, 1 in ½ mi · HVAC / heat pump); Zaragoza Plumbing Team (1 on parcel, 1 in ½ mi · Plumbing / water heater / sewer); Owner Builder (11 in ½ mi · Addition (adds square footage)); Jungsten Constr (3 in ½ mi · New garage / accessory structure).
Permit & Project History on This Parcel (3 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 164396 | Solar / battery storage | Issued | Iss. Mar 5, 2020 | $16,000 | Rooftop Solar 2.68 K W Express |
| B14728 | HVAC / heat pump | Issued | Iss. Apr 16, 2018 | $4,250 | Replace furnace only AFUE 96 — Replace Mechanical Appliance |
| B13655 | Plumbing / water heater / sewer | Issued | Iss. Nov 2, 2017 | $2,500 | extending gas line 24ft. — New Plumbing Fixture(s) |