35 Cliff Street Ext
Dillon Beach 94929 · Dillon Beach · Unincorporated Marin · Coordinates: 38.24767, -122.96634
Executive Verdict · Public-Records Synthesis
Zoned C-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 $1,444,000 ($1,271,000–$1,617,000).
Upsides & Opportunities
- ✓ ADU & SB 9 infill pathways screen as likely eligible
Zoned C-R1 supports ministerial ADU/JADU review plus SB 9 both two-unit development and ministerial urban lot split on a 5,053 sq ft lot.
Source: Unincorporated Marin zoning · CA Gov. Code 66314 & 65852.21
- ✓ Documented permitted upgrades (+$44,880 contributory est.)
Public building records show issued construction/renovation work on this parcel (4 total permits, latest Jun 18, 2026).
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 (153912): Issued after 8 mo (2.8× the 83d median) — above the 75th percentile for remodel / interior alteration permits in Unincorporated Marin (median 83d, 75th pct 148d, n=1,054).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (review-time benchmark)
- ! 3 slow or stalled nearby projects within ½ mile
Closest lead: New home at 40 Sea Bluff (490 ft 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)
Parcel & Assessor
- Lot size:
- 5,053 sq ft (0.12 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 35 CLIFF STREET EXT
Zoning & Land Use
C-R1 — Residential Single Family (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned C-R1 (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotLikely eligible
Zoned C-R1, a single-family residential zone.
- SB 9: split into two lotsLikely eligible
Zoned C-R1, a single-family residential zone. The lot is 5,053 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 06041C0080E, effective August 15, 2017
- CGS Alquist-Priolo Earthquake Fault Zone
- Not in an Alquist-Priolo Earthquake Fault Zone
Surrounding Rent & Value Benchmarks (Public Records)
Range: $1,271,000 – $1,617,000 · Status: Off market
HUD Small Area FMR (ZIP 94929) · FY 2026
Studio $2,050 · 1BR $2,510 · 2BR $2,990 · 3BR $4,010 · 4BR $4,280
Developments Deserving Closer Investigation & Active Area Builders
- New home at 40 Sea Bluff (Issued)490 ft N
Active in "Issued" for 3.4 yr (first record Jun 2, 2023) with no new permit activity recorded in 3.1 yr. High-impact scale (1 housing unit, $1,600,000 declared valuation across 1 permit).
- New home at 20 Sea Bluff (Issued)490 ft N
Active in "Issued" for 3.5 yr (first record May 16, 2023) with no new permit activity recorded in 3.2 yr. High-impact scale (1 housing unit, $1,420,000 declared valuation across 1 permit).
- New home at 314 Oceana Dr (Issued)0.45 mi N
Active in "Issued" for 3.4 yr (first record Jun 6, 2023) with no new permit activity recorded in 2.1 yr. High-impact scale (1 housing unit, $1,783,932 declared valuation across 1 permit).
- Remodel / interior alteration (153912) (Issued)On this parcel
Issued after 8 mo (2.8× the 83d median) — above the 75th percentile for remodel / interior alteration permits in Unincorporated Marin (median 83d, 75th pct 148d, n=1,054).
Entity-resolved builders & contractors in ½ mile: Owner Builder (1 on parcel, 14 in ½ mi · Remodel / interior alteration); Dance Construction (1 on parcel, 1 in ½ mi · Remodel / interior alteration); Dance Builders Enterprises (1 on parcel, 1 in ½ mi · Windows / doors / siding); R Electric (1 on parcel, 1 in ½ mi · Electrical / panel); Owner (6 in ½ mi · Remodel / interior alteration).
Permit & Project History on This Parcel (4 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B47223 | Electrical / panel | Issued | Iss. Jun 18, 2026 | $6,400 | Service Upgrade |
| 154619 | Plumbing / water heater / sewer | Issued | Iss. Feb 27, 2017 | $500 | Install Propane Tank & Gas Line |
| 153912 | Remodel / interior alteration | Issued | Iss. Nov 28, 2016 | $136,000 | Rmdl Whole Hse And Replace Roof Framing & Covering T.D. 11/15/16 |
| 151391 | Windows / doors / siding | Issued | Iss. Mar 31, 2016 | $8,000 | Repl All Wndws & Ext Doors & Gar Door In Kind ***Permit Recinded |