102 W Oak Knoll Dr
San Anselmo 94960 · Sleepy Hollow · Unincorporated Marin · Coordinates: 37.99975, -122.58544
Executive Verdict · Public-Records Synthesis
Zoned RMP-0.2 in Unincorporated Marin with likely ministerial ADU eligibility and mapped CAL FIRE moderate fire hazard severity zone (state responsibility area) due diligence; benchmark value $1,792,000 ($1,577,000–$2,007,000).
Upsides & Opportunities
- ✓ Ministerial ADU / JADU pathway likely eligible
Zone RMP-0.2 allows residential use qualifying for ministerial ADU review under state law.
Source: Unincorporated Marin zoning · CA Gov. Code 66314
- ✓ 5 documented municipal building permits on file
On-parcel permit history is indexed through May 7, 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)
- ! Delayed or open permit activity on this parcel
Other (165309): Issued after 2 mo — above the 75th percentile for other permits in Unincorporated Marin (median 0d, 75th pct 1d, n=1,560).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (review-time benchmark)
- ! 5 slow or stalled nearby projects within ½ mile
Closest lead: New home at 71 W Oak Knoll Dr (0.16 mi NE, applied). 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:
- 171,844 sq ft (3.94 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 102 W OAK KNOLL DR
Zoning & Land Use
RMP-0.2 — Residential Multiple Planned (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned RMP-0.2 (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-0.2 (multifamily residential), not a single-family residential zone.
- SB 9: split into two lotsUnlikely
Zoned RMP-0.2 (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: $1,577,000 – $2,007,000 · 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 71 W Oak Knoll Dr (Applied)0.16 mi NE
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)0.18 mi SE
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).
- Other (165309) (Issued)On this parcel
Issued after 2 mo — above the 75th percentile for other permits in Unincorporated Marin (median 0d, 75th pct 1d, n=1,560).
- New home (Issued)0.22 mi S
Active in "Issued" for 14 mo (first record Sep 18, 2025) with no new permit activity recorded in 14 mo.
Entity-resolved builders & contractors in ½ mile: Ernest Ongaro And Sons (3 on parcel, 3 in ½ mi · HVAC / heat pump); Greg Shaw Construction (1 on parcel, 1 in ½ mi · Other); Golden Gate Home Improvement (1 on parcel, 1 in ½ mi · Electrical / panel); Owner Builder (6 in ½ mi · Remodel / interior alteration); Owner (5 in ½ mi · Addition (adds square footage)).
Permit & Project History on This Parcel (5 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B46713 | Plumbing / water heater / sewer | Issued | Iss. May 7, 2026 | $2,980 | Replace Plumbing Fixtures(s) |
| B25298 | HVAC / heat pump | Issued | Iss. Mar 30, 2021 | $19,000 | replace 2 failed furnace with 2 new air handler and add 2 heat pumps new — Mechanical Appliance, Replace Mechanical Appl… |
| B24799 | HVAC / heat pump | Issued | Iss. Feb 4, 2021 | $5,100 | replace failed ducting with new ducting in crawl space — Replace Ductwork, Replace Mechanical Appliance |
| 165309 | Other | Issued | Iss. Jul 31, 2020 | $36,543 | Deck T.D. 6-19-20 |
| B11450 | Electrical / panel | Issued | Iss. Nov 29, 2016 |