2641 Paradise Dr
Tiburon 94920 · Unincorporated Tiburon · Unincorporated Marin · Coordinates: 37.88145, -122.44456
Executive Verdict · Public-Records Synthesis
Zoned R1 in Unincorporated Marin with likely ADU & SB 9 infill eligibility and mapped CAL FIRE moderate fire hazard severity zone (state responsibility area) due diligence; benchmark value $3,354,000 ($2,952,000–$3,756,000).
Upsides & Opportunities
- ✓ ADU & SB 9 infill pathways screen as likely eligible
Zoned R1 supports ministerial ADU/JADU review plus SB 9 both two-unit development and ministerial urban lot split on a 14,070 sq ft lot. Local precedent is active with 2 ADU permits within ¼ mile over the last 36 months.
Source: Unincorporated Marin zoning · CA Gov. Code 66314 & 65852.21
- ✓ Documented permitted upgrades (+$167,400 contributory est.)
Public building records show issued construction/renovation work on this parcel (6 total permits, latest Dec 14, 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)
- ! CAL FIRE Moderate 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)
- ! Delayed or open permit activity on this parcel
Remodel / interior alteration (161436): Issued after 13 mo (4.7× the 83d median) — slower than 90% of remodel / interior alteration permits in Unincorporated Marin (median 83d, 90th pct 266d, n=1,054).
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 2448 Spanish Trl Rd Aka (0.22 mi SW, 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)
Parcel & Assessor
- Lot size:
- 14,070 sq ft (0.32 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 2641 PARADISE DR
Zoning & Land Use
R1 — Residential Single Family (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned R1 (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotLikely eligible
Zoned R1, a single-family residential zone.
- SB 9: split into two lotsLikely eligible
Zoned R1, a single-family residential zone. The lot is 14,070 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
- Moderate 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 06041C0489E, 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: $2,952,000 – $3,756,000 · 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
- Remodel / interior alteration (161436) (Issued)On this parcel
Issued after 13 mo (4.7× the 83d median) — slower than 90% of remodel / interior alteration permits in Unincorporated Marin (median 83d, 90th pct 266d, n=1,054).
- New home at 2448 Spanish Trl Rd Aka (Issued)0.22 mi SW
Active in "Issued" for 8.2 yr (first record Sep 18, 2018) with no new permit activity recorded in 7.5 yr.
- Accessory dwelling unit at 2398 Vista Del Mar Ln (was 2401 Paradise Dr) (Issued)0.28 mi S
Active in "Issued" for 6 yr (first record Nov 16, 2020) with no new permit activity recorded in 5.6 yr.
- New home (Issued)0.32 mi SW
Active in "Issued" for 2.2 yr (first record Aug 26, 2024) with no new permit activity recorded in 2.2 yr.
Entity-resolved builders & contractors in ½ mile: Owner Builder (2 on parcel, 9 in ½ mi · Accessory dwelling unit (new or conversion)); Owner (1 on parcel, 2 in ½ mi · Addition (adds square footage)); Able Roofing (1 on parcel, 1 in ½ mi · Roof replacement); North HVAC Services (1 on parcel, 1 in ½ mi · HVAC / heat pump); Amesos Plumbing (1 on parcel, 1 in ½ mi · Plumbing / water heater / sewer).
Permit & Project History on This Parcel (6 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B28080 | HVAC / heat pump | Issued | Iss. Dec 14, 2021 | $22,595 | Furnace Change out (X2) & installation of all new ducts. — Replace Ductwork, Replace Mechanical Appliance |
| 162019 | Remodel / interior alteration | Issued | Iss. Jul 10, 2019 | $150,000 | Swappiing Living Room W/Kitch & Rmdl 2nd Flr Mstr Bath T.D. 7/1/19 |
| 161436 | Remodel / interior alteration | Issued | Iss. May 6, 2019 | $400,000 | Remodel Whole House; Replace Deck Railings T.D. 5/25/18 8/21/20 Deck Railing Scope Deleted |
| B11861 | Plumbing / water heater / sewer | Issued | Iss. Feb 15, 2017 | $2,093 | New gas line to replace damaged gas line from Propane Tank to Meter — New Plumbing Fixture(s) |
| 152250 | Windows / doors / siding |