140 Sacramento Ave
San Anselmo 94960 · Sleepy Hollow · Unincorporated Marin · Coordinates: 37.98904, -122.56384
Executive Verdict · Public-Records Synthesis
Zoned RMP-0.1 in Unincorporated Marin with likely ministerial ADU eligibility and mapped CAL FIRE moderate fire hazard severity zone (state responsibility area) due diligence; benchmark value $2,008,000 ($1,767,000–$2,249,000).
Upsides & Opportunities
- ✓ Ministerial ADU / JADU pathway likely eligible
Zone RMP-0.1 allows residential use qualifying for ministerial ADU review under state law (1 ADU permit permitted within ¼ mile in 36 months).
Source: Unincorporated Marin zoning · CA Gov. Code 66314
- ✓ Documented permitted upgrades (+$27,700 contributory est.)
Public building records show issued construction/renovation work on this parcel (11 total permits, latest Aug 18, 2021).
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)
- ! Delayed or open permit activity on this parcel
New home at 140 Sacramento Ave: Active in "Issued" for 11.4 yr (first record Jun 11, 2015) with no new permit activity recorded in 10.1 yr.
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (review-time benchmark)
- ! 3 slow or stalled nearby projects within ½ mile
Closest lead: Accessory dwelling unit at 183 Sacramento Ave A D U 183 A (0.11 mi 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)
Parcel & Assessor
- Lot size:
- 22,303 sq ft (0.51 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 140 SACRAMENTO AVE
Zoning & Land Use
RMP-0.1 — Residential Multiple Planned (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned RMP-0.1 (multifamily residential): state law allows ADUs where homes are allowed. On a multifamily lot the state allowance is different: ADUs in non-living space of the building, plus up to eight detached ADUs.
- SB 9: two homes on the lotUnlikely
Zoned RMP-0.1 (multifamily residential), not a single-family residential zone.
- SB 9: split into two lotsUnlikely
Zoned RMP-0.1 (multifamily residential), 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: $1,767,000 – $2,249,000 · 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 140 Sacramento Ave (Issued)On this parcel
Active in "Issued" for 11.4 yr (first record Jun 11, 2015) with no new permit activity recorded in 10.1 yr.
- New single-family home (78718) (Applied)On this parcel
Pending in review for 10.1 yr (14.6× the 253d median) — slower than 90% of new single-family home permits in Unincorporated Marin (median 253d, 90th pct 686d, n=121).
- Addition (adds square footage) (78717) (Applied)On this parcel
Pending in review for 10.1 yr (23.1× the 160d median) — slower than 90% of addition (adds square footage) permits in Unincorporated Marin (median 160d, 90th pct 440d, n=316).
- Accessory dwelling unit at 183 Sacramento Ave A D U 183 A (Issued)0.11 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).
Entity-resolved builders & contractors in ½ mile: Owner Builder (6 on parcel, 15 in ½ mi · General repair); Bluestone Pool And Landscape (1 on parcel, 1 in ½ mi · Pool / spa); Napa Electric Shop (1 on parcel, 1 in ½ mi · Solar / battery storage); Napa Electric (1 on parcel, 1 in ½ mi · Solar / battery storage); Jungsten Constr (3 in ½ mi · New garage / accessory structure).
Permit & Project History on This Parcel (11 permits, 1 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B26678 | Solar / battery storage | Issued | Iss. Aug 18, 2021 | $16,320 | Provide and install a 4.08 kwdc roof mount PV system. |
| 78718 | New single-family home | Applied | App. Sep 28, 2016 | $625,000 | S F D W/Garage & Decks***Superceded |
| 78717 | Addition (adds square footage) | Applied | App. Sep 28, 2016 | $20,000 | Studio/Office, Detached, W/Deck***Superceded |
| 152941 | Pool / spa | Issued | Iss. Aug 11, 2016 | $55,000 | Pool |