157 Marina Blvd
San Rafael 94901 · Country Club · Unincorporated Marin · Coordinates: 37.97059, -122.50259
Executive Verdict · Public-Records Synthesis
Zoned R1-B4 in Unincorporated Marin with likely ADU & SB 9 infill eligibility and zero mapped flood, fire, or fault hazard overlaps; benchmark value $1,743,000 ($1,534,000–$1,952,000).
Upsides & Opportunities
- ✓ ADU & SB 9 infill pathways screen as likely eligible
Zoned R1-B4 supports ministerial ADU/JADU review plus SB 9 both two-unit development and ministerial urban lot split on a 18,861 sq ft lot. Local precedent is active with 3 ADU permits within ¼ mile over the last 36 months.
Source: Unincorporated Marin zoning · CA Gov. Code 66314 & 65852.21
- ✓ Documented permitted upgrades (+$44,550 contributory est.)
Public building records show issued construction/renovation work on this parcel (5 total permits, latest Jun 3, 2020).
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)
- ! 6 slow or stalled nearby projects within ½ mile
Closest lead: New home at 40 Montecito Rd (aka 40a) (0.11 mi N, 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 (~$20,495/yr at $1,743,000)
Sale triggers reassessment to 1.00% base + ~0.15% voter debt (~$1,708/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:
- 18,861 sq ft (0.43 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 157 MARINA BLVD
Zoning & Land Use
R1-B4 — Residential Single Family (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned R1-B4 (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotLikely eligible
Zoned R1-B4, a single-family residential zone.
- SB 9: split into two lotsLikely eligible
Zoned R1-B4, a single-family residential zone. The lot is 18,861 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
- Not in a State-mapped fire hazard severity zone
- FEMA National Flood Hazard Layer
- Zone X: minimal flood hazard (all of the lot) · FIRM panel 06041C0457E, effective March 16, 2016
- CGS Alquist-Priolo Earthquake Fault Zone
- Not in an Alquist-Priolo Earthquake Fault Zone
Surrounding Rent & Value Benchmarks (Public Records)
Range: $1,534,000 – $1,952,000 · Status: Off market
HUD Small Area FMR (ZIP 94901) · FY 2026
Studio $2,150 · 1BR $2,580 · 2BR $3,120 · 3BR $3,990 · 4BR $4,130
Developments Deserving Closer Investigation & Active Area Builders
- New home at 40 Montecito Rd (aka 40a) (Issued)0.11 mi N
Active in "Issued" for 5.3 yr (first record Jul 16, 2021) with no new permit activity recorded in 3.9 yr. High-impact scale (1 housing unit, $2,515,850 declared valuation across 1 permit).
- New home at 53 Montecito Rd (Issued)0.24 mi NE
Active in "Issued" for 8.9 yr (first record Dec 27, 2017) with no new permit activity recorded in 8.5 yr. High-impact scale (1 housing unit, $1,498,000 declared valuation across 1 permit).
- New home at 7 Sea View Dr (Issued)0.31 mi W
Active in "Issued" for 12.5 yr (first record May 19, 2014) with no new permit activity recorded in 12.2 yr. High-impact scale (1 housing unit, $1,400,000 declared valuation across 1 permit).
- New home at 195 Fairway Dr (Issued)0.36 mi N
Active in "Issued" for 5.6 yr (first record Mar 22, 2021) with no new permit activity recorded in 5.5 yr. High-impact scale (1 housing unit, $1,400,000 declared valuation across 1 permit).
Entity-resolved builders & contractors in ½ mile: Pac West Painting (2 on parcel, 2 in ½ mi · Addition (adds square footage)); J And J Electric (1 on parcel, 1 in ½ mi · Plumbing / water heater / sewer); Dickson (1 on parcel, 1 in ½ mi · HVAC / heat pump); Rake Electric (1 on parcel, 1 in ½ mi · Electrical / panel); Owner Builder (25 in ½ mi · Remodel / interior alteration).
Permit & Project History on This Parcel (5 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 164791 | Plumbing / water heater / sewer | Issued | Iss. Jun 3, 2020 | $13,765 | New Generator T.D. 5/27/20 |
| B22537 | HVAC / heat pump | Issued | Iss. May 7, 2020 | $9,700 | REPLACE AC — Replace Mechanical Appliance |
| B16594 | Electrical / panel | Issued | Iss. Dec 3, 2018 | $500 | Install (4) LED cans in alcove over entry. — New Circuits / Outlets |
| 159385 | New garage / accessory structure | Issued | Iss. Aug 22, 2018 | $15,000 | New Covered Landing T.D. 8/28/18 |
| 153105 | Addition (adds square footage) | Issued | Iss. Aug 30, 2016 | $99,000 |