114 Jamaica St
Tiburon 94920 · Paradise Cay · Unincorporated Marin · Coordinates: 37.91034, -122.47467
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 $3,395,000 ($2,988,000–$3,802,000).
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 (+$113,740 contributory est.)
Public building records show issued construction/renovation work on this parcel (5 total permits, latest May 4, 2023).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (parcel APN)
Watchouts & Due Diligence
- ! FEMA Special Flood Hazard Area (AE, about 36% 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)
- ! 6 slow or stalled nearby projects within ½ mile
Closest lead: New home at 149 Jamaica St (0.15 mi 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 (~$39,493/yr at $3,395,000)
Sale triggers reassessment to 1.00% base + ~0.15% voter debt (~$3,291/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:
- 20,909 sq ft (0.48 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 114 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 36% 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 20,909 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 36% 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 36% of the lot); Zone X: 0.2% annual chance flood hazard (shaded X) (about 64% 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: $2,988,000 – $3,802,000 · 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)0.15 mi 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)0.11 mi NW
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).
- New home at 100 Jamaica St (Issued)230 ft S
Active in "Issued" for 11.4 yr (first record Jun 2, 2015) with no new permit activity recorded in 11.1 yr.
- New home (Issued)0.32 mi NW
Active in "Issued" for 5.8 yr (first record Jan 21, 2021) with no new permit activity recorded in 5.8 yr.
Entity-resolved builders & contractors in ½ mile: Owner Builder (1 on parcel, 15 in ½ mi · Remodel / interior alteration); Javier Magana Construction Services (1 on parcel, 2 in ½ mi · New garage / accessory structure); Aussie Roofing (1 on parcel, 1 in ½ mi · Roof replacement); Symmetric Energy (1 on parcel, 1 in ½ mi · Solar / battery storage); Owner (11 in ½ mi · Remodel / interior alteration).
Permit & Project History on This Parcel (5 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B33709 | Solar / battery storage | Issued | Iss. May 4, 2023 | $98,478 | INSTALLATION OF ROOFTOP PV SOLAR, ENERGY STORAGE SYSTEM 17.22kW DC, 14.66kW AC, 16.08kW CEC |
| 173783 | Remodel / interior alteration | Issued | Iss. Apr 12, 2023 | $150,000 | Remodel Kitchen To Include [N] Mud Rm & Pantry T.D. 3-13-23 |
| 166936 | Remodel / interior alteration | Issued | Iss. Jan 21, 2021 | $35,000 | Interior Remodel |
| 162519 | Remodel / interior alteration | Issued | Iss. Sep 3, 2019 | $25,000 | Bath Rmdl T.D. 8/14/19 |
| 147943 | Roof replacement | Issued | Iss. Jul 9, 2015 |