4 Morelos Ave
Forest Knolls 94933 · Forest Knolls · Unincorporated Marin · Coordinates: 38.01409, -122.69209
Executive Verdict · Public-Records Synthesis
Zoned R1-B2-SGV in Unincorporated Marin with likely ADU & SB 9 infill eligibility and mapped CAL FIRE high fire hazard severity zone (state responsibility area) due diligence; benchmark value $942,000 ($829,000–$1,055,000).
Upsides & Opportunities
- ✓ ADU & SB 9 infill pathways screen as likely eligible
Zoned R1-B2-SGV supports ministerial ADU/JADU review plus SB 9 both two-unit development and ministerial urban lot split on a 13,024 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 Jul 29, 2024, 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)
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 High 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 8 Morelos Ave (120 ft E, 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 (~$11,283/yr at $942,000)
Sale triggers reassessment to 1.00% base + ~0.15% voter debt (~$940/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:
- 13,024 sq ft (0.30 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 4 MORELOS AVE
Zoning & Land Use
R1-B2-SGV — Residential Single Family (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned R1-B2-SGV (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotLikely eligible
Zoned R1-B2-SGV, a single-family residential zone.
- SB 9: split into two lotsLikely eligible
Zoned R1-B2-SGV, a single-family residential zone. The lot is 13,024 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
- High 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 06041C0275D, effective May 4, 2009
- CGS Alquist-Priolo Earthquake Fault Zone
- Not in an Alquist-Priolo Earthquake Fault Zone
Surrounding Rent & Value Benchmarks (Public Records)
Range: $829,000 – $1,055,000 · Status: Off market
HUD Small Area FMR (ZIP 94933) · FY 2026
Studio $2,870 · 1BR $3,440 · 2BR $4,160 · 3BR $5,310 · 4BR $5,510
Developments Deserving Closer Investigation & Active Area Builders
- Accessory dwelling unit at 8 Morelos Ave (Issued)120 ft E
Active in "Issued" for 6.1 yr (first record Oct 8, 2020) with no new permit activity recorded in 6.1 yr.
- Demolition at 6956 Sir Francis Drake Blvd (Issued)0.12 mi NE
Active in "Issued" for 2.8 yr (first record Jan 10, 2024) with no new permit activity recorded in 2.7 yr.
- New home at 42 Arroyo Rd (Issued)0.16 mi N
Active in "Issued" for 12.3 yr (first record Aug 11, 2014) with no new permit activity recorded in 11.8 yr.
- Demolition at 2 Juarez Ave (Issued)0.19 mi E
Active in "Issued" for 9.9 yr (first record Dec 28, 2016) with no new permit activity recorded in 8.9 yr.
Entity-resolved builders & contractors in ½ mile: Gutierrez Roofing (1 on parcel, 1 in ½ mi · Roof replacement); Haddon Heating And Cooling (1 on parcel, 1 in ½ mi · HVAC / heat pump); Owner Builder (11 in ½ mi · Accessory dwelling unit (new or conversion)); Owner (7 in ½ mi · Accessory dwelling unit (new or conversion)); Zia Designs (2 in ½ mi · Demolition).
Permit & Project History on This Parcel (2 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B38899 | Roof replacement | Issued | Iss. Jul 29, 2024 | $20,887 | Re roof: Remove existing roof layers. Install exterior grade 1/2 Plywood. and class A composition shingles — ReRoofing; … |
| B27447 | HVAC / heat pump | Issued | Iss. Oct 18, 2021 | $12,843 | Replace failed furnace with new central heater with new r6 insulated ductwork AFUE 96% — Replace Ductwork, Replace Mecha… |