28 Timothy Ave
San Anselmo 94960 · Sleepy Hollow · Unincorporated Marin · Coordinates: 37.99952, -122.58209
Executive Verdict · Public-Records Synthesis
Zoned A2-BD in Unincorporated Marin and mapped CAL FIRE moderate fire hazard severity zone (state responsibility area) due diligence; benchmark value $1,953,000 ($1,719,000–$2,187,000).
Upsides & Opportunities
- ✓ 3 documented municipal building permits on file
On-parcel permit history is indexed through Feb 18, 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. 16.3 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 at 830 Butterfield Rd (0.49 mi NE, 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 (~$22,910/yr at $1,953,000)
Sale triggers reassessment to 1.00% base + ~0.15% voter debt (~$1,909/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:
- 18,469 sq ft (0.42 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 28 TIMOTHY AVE
Zoning & Land Use
A2-BD — Agriculture Limited (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADUCan't tell
Zoned A2-BD (agricultural): ADUs are allowed if the zone allows a home, which depends on the zone's rules.
- SB 9: two homes on the lotUnlikely
Zoned A2-BD (agricultural), not a single-family residential zone.
- SB 9: split into two lotsUnlikely
Zoned A2-BD (agricultural), not a single-family residential zone.
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: $1,719,000 – $2,187,000 · 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 at 830 Butterfield Rd (Issued)0.49 mi NE
Active in "Issued" for 8.3 yr (first record Aug 9, 2018) with no new permit activity recorded in 7.6 yr. High-impact scale (1 housing unit, $1,097,000 declared valuation across 2 permits).
- New home at 71 W Oak Knoll Dr (Applied)0.15 mi NW
In "Applied" for 5.2 yr (since Sep 1, 2021), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
- 135 Woodside, Unit A (Entitled)0.16 mi SW
In "Entitled" for 8.2 yr (since Sep 7, 2018), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
- New home (Entitled)0.46 mi S
In "Entitled" for 6.7 yr (since Mar 8, 2020), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
Entity-resolved builders & contractors in ½ mile: Ernest Ongaro And Sons (1 on parcel, 1 in ½ mi · Other); Gramajo Roofing (1 on parcel, 1 in ½ mi · Roof replacement); Jemico (1 on parcel, 1 in ½ mi · Windows / doors / siding); Owner Builder (16 in ½ mi · Remodel / interior alteration); First Impressions Painting And Building (4 in ½ mi · Remodel / interior alteration).
Permit & Project History on This Parcel (3 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B45924 | Other | Issued | Iss. Feb 18, 2026 | $25,000 | — |
| B43749 | Roof replacement | Issued | Iss. Sep 4, 2025 | $20,000 | removal of existing roof materials and install new class A asphalt shingles roof system — ReRoofing |
| B43536 | Windows / doors / siding | Issued | Iss. Aug 19, 2025 | $19,400 | Replace 8 retrofit windows and 2 retrofit sliding door. — Non-structural Door/Window Replacement |