137 Jamaica St
Tiburon 94920 · Paradise Cay · Unincorporated Marin · Coordinates: 37.91152, -122.47580
Executive Verdict · Public-Records Synthesis
Zoned RSP-5.8-BFC in Unincorporated Marin with likely ministerial ADU eligibility and mapped FEMA AE flood due diligence; benchmark value $3,136,000 ($2,760,000–$3,512,000).
Upsides & Opportunities
- ✓ Ministerial ADU / JADU pathway likely eligible
Zone RSP-5.8-BFC allows residential use qualifying for ministerial ADU review under state law.
Source: Unincorporated Marin zoning · CA Gov. Code 66314
- ✓ Documented permitted upgrades (+$17,914 contributory est.)
Public building records show issued construction/renovation work on this parcel (6 total permits, latest Sep 5, 2023).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (parcel APN)
Watchouts & Due Diligence
- ! FEMA Special Flood Hazard Area (AE, about 29% of the lot of lot)
Zone AE: 1% annual chance flood (Special Flood Hazard Area) overlaps this parcel. Expect mandatory flood insurance for federally backed loans and floodplain elevation/mitigation rules for new units or SB 9 applications.
Source: FEMA National Flood Hazard Layer (parcel polygon)
- ! Delayed or open permit activity on this parcel
General repair (172856): Issued after 9 mo (3.2× the 83d median) — above the 75th percentile for general repair permits in Unincorporated Marin (median 83d, 75th pct 181d, n=693).
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 149 Jamaica St (230 ft 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)
- ! Year 1 Prop 13 tax reset (~$36,514/yr at $3,136,000)
Sale triggers reassessment to 1.00% base + ~0.15% voter debt (~$3,043/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:
- 10,542 sq ft (0.24 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 137 JAMAICA ST
Zoning & Land Use
RSP-5.8-BFC — Residential Single Family Planned (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned RSP-5.8-BFC (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotPossible, with conditions
Zoned RSP-5.8-BFC, a single-family residential zone. FEMA Special Flood Hazard Area (Zone AE) covers about 29% of the lot: the project must meet the National Flood Insurance Program floodplain standards, or the lot needs a map revision.
- SB 9: split into two lotsPossible, with conditions
Zoned RSP-5.8-BFC, a single-family residential zone. The lot is 10,542 sq ft by the assessor, room for two lots of at least 1,200 sq ft, each at least 40% of the original. FEMA Special Flood Hazard Area (Zone AE) covers about 29% of the lot: the project must meet the National Flood Insurance Program floodplain standards, or the lot needs a map revision.
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 AE: 1% annual chance flood (Special Flood Hazard Area) (about 29% of the lot); Zone X: 0.2% annual chance flood hazard (shaded X) (about 71% of the lot) · FIRM panel 06041C0486E, 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: $2,760,000 – $3,512,000 · Status: Off market
HUD Small Area FMR (ZIP 94920) · FY 2026
Studio $2,820 · 1BR $3,380 · 2BR $4,100 · 3BR $5,230 · 4BR $5,420
Developments Deserving Closer Investigation & Active Area Builders
- New home at 149 Jamaica St (Issued)230 ft NW
Active in "Issued" for 12.2 yr (first record Aug 19, 2014) with no new permit activity recorded in 12 yr. High-impact scale (1 housing unit, $750,000 declared valuation across 1 permit).
- New home (Entitled)100 ft NE
In "Entitled" for 5.1 yr (since Oct 7, 2021), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
- General repair (172856) (Issued)On this parcel
Issued after 9 mo (3.2× the 83d median) — above the 75th percentile for general repair permits in Unincorporated Marin (median 83d, 75th pct 181d, n=693).
- New home at 100 Jamaica St (Issued)0.14 mi SE
Active in "Issued" for 11.4 yr (first record Jun 2, 2015) with no new permit activity recorded in 11.1 yr.
Entity-resolved builders & contractors in ½ mile: Owner Builder (1 on parcel, 15 in ½ mi · Remodel / interior alteration); Owner (2 on parcel, 13 in ½ mi · Remodel / interior alteration); Rmc Contractors (1 on parcel, 1 in ½ mi · General repair); Tesla Energy Operations (1 on parcel, 1 in ½ mi · Solar / battery storage); Integrity Electric (1 on parcel, 1 in ½ mi · Electrical / panel).
Permit & Project History on This Parcel (6 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B35277 | Electrical / panel | Issued | Iss. Sep 5, 2023 | $10,000 | Upgrade electrical panel — Service Upgrade |
| B31993 | Solar / battery storage | Issued | Iss. Dec 8, 2022 | $21,200 | Install (24) roof mount solar panels at 9.6 kW and 1 battery |
| 172856 | General repair | Issued | Iss. Dec 1, 2022 | $65,000 | Renovate & Extend Deck; Refinish Pool; Demo [E] Trellis T.D. 11-3-22 |
| B22536 | Plumbing / water heater / sewer | Issued | Iss. May 9, 2020 | $3,000 | Install tankless water heater system. — Replace Plumbing Fixtures(s) |
| B22391 | Electrical / panel | Issued | Iss. Mar 30, 2020 |