59 Montecito Rd
San Rafael 94901 · Country Club · Unincorporated Marin · Coordinates: 37.97320, -122.50246
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 $1,882,000 ($1,656,000–$2,108,000).
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 42,558 sq ft lot. Local precedent is active with 5 ADU permits within ¼ mile over the last 36 months.
Source: Unincorporated Marin zoning · CA Gov. Code 66314 & 65852.21
- ✓ Documented permitted upgrades (+$148,200 contributory est.)
Public building records show issued construction/renovation work on this parcel (10 total permits, latest Nov 11, 2021).
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) (410 ft S, 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 (~$22,093/yr at $1,882,000)
Sale triggers reassessment to 1.00% base + ~0.15% voter debt (~$1,841/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:
- 42,558 sq ft (0.98 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 59 MONTECITO RD
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 42,558 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: $1,656,000 – $2,108,000 · 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)410 ft S
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)0.11 mi E
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 195 Fairway Dr (Issued)0.18 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).
- New home at 195 Fairway Dr (Issued)0.18 mi N
Active in "Issued" for 12.9 yr (first record Dec 26, 2013) with no new permit activity recorded in 10.4 yr. High-impact scale (1 housing unit, $1,636,842 declared valuation across 2 permits).
Entity-resolved builders & contractors in ½ mile: Owner (3 on parcel, 21 in ½ mi · Remodel / interior alteration); Ernest Ongaro And Sons (3 on parcel, 3 in ½ mi · HVAC / heat pump); Tesla Energy Operations (2 on parcel, 2 in ½ mi · Roof replacement); Charles Window And Door (1 on parcel, 1 in ½ mi · Windows / doors / siding); Ongaro Ernest And Sons (1 on parcel, 1 in ½ mi · Plumbing / water heater / sewer).
Permit & Project History on This Parcel (10 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B27734 | Roof replacement | Issued | Iss. Nov 11, 2021 | $11,430 | Reroof (136) Tesla tiles at 9.75 kW and 2 batteries. — ReRoofing |
| B27733 | Roof replacement | Issued | Iss. Nov 11, 2021 | $40,685 | Reroof (136) Tesla tiles at 9.75 kW and 2 batteries. 11430<div>*Changed to (192) tiles at 13.76 kW*</div> |
| 165147 | Remodel / interior alteration | Issued | Iss. Jul 20, 2020 | $400,000 | Remodel; Trellises; Reroof; Skylights; Strct Wndws T.D. 2-24-20 |
| 165146 | Pool / spa | Issued | Iss. Jul 20, 2020 | $100,000 | Pool; Retaining Wall T.D. 2-24-20 |
| B19923 | HVAC / heat pump | Issued | Iss. Sep 23, 2019 |