115 Shoreline Hwy
Mill Valley 94941 · Almonte · Unincorporated Marin · Coordinates: 37.87960, -122.51918
Executive Verdict · Public-Records Synthesis
Zoned RMPC-12.7 in Unincorporated Marin with likely ministerial ADU eligibility and mapped CAL FIRE moderate fire hazard severity zone (state responsibility area) due diligence; benchmark value $2,080,000 ($1,830,000–$2,330,000).
Upsides & Opportunities
- ✓ Ministerial ADU / JADU pathway likely eligible
Zone RMPC-12.7 allows residential use qualifying for ministerial ADU review under state law.
Source: Unincorporated Marin zoning · CA Gov. Code 66314
- ✓ 1 documented municipal building permit on file
On-parcel permit history is indexed through May 13, 2020, letting you verify roof, HVAC, electrical, or structural work against seller disclosures.
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)
about 95% 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)
- ! 6 slow or stalled nearby projects within ½ mile
Closest lead: 74 new homes at 825 Drake Ave (0.45 mi SE, 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 (~$24,370/yr at $2,080,000)
Sale triggers reassessment to 1.00% base + ~0.15% voter debt (~$2,031/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:
- 164,352 sq ft (3.77 ac)
- Assessor use:
- Exemption - Improved
- Addresses on lot:
- 115 SHORELINE HWY; 115 SHORELINE HWY APT 101; 115 SHORELINE HWY APT 102
Zoning & Land Use
RMPC-12.7 — Residential Commercial Multiple Planned (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned RMPC-12.7 (mixed use): state law allows ADUs where homes are allowed. On a multifamily lot the state allowance is different: ADUs in non-living space of the building, plus up to eight detached ADUs.
- SB 9: two homes on the lotUnlikely
Zoned RMPC-12.7 (mixed use), not a single-family residential zone.
- SB 9: split into two lotsUnlikely
Zoned RMPC-12.7 (mixed use), not a single-family residential zone.
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 (about 95% of the lot); Zone X: 0.2% annual chance flood hazard (shaded X) (about 5% of the lot) · FIRM panel 06041C0469F, 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: $1,830,000 – $2,330,000 · Status: Off market
HUD Small Area FMR (ZIP 94941) · FY 2026
Studio $2,730 · 1BR $3,270 · 2BR $3,960 · 3BR $5,060 · 4BR $5,240
Developments Deserving Closer Investigation & Active Area Builders
- 74 new homes at 825 Drake Ave (Issued)0.45 mi SE
Active in "Issued" for 6 yr (first record Nov 30, 2020) with no new permit activity recorded in 3.5 yr. High-impact scale (74 housing units, $8,731,920 declared valuation across 1 permit).
- New commercial building at 201 Flamingo Rd (aka 205) (Issued)0.39 mi W
Active in "Issued" for 11.7 yr (first record Feb 17, 2015) with no new permit activity recorded in 11.2 yr. High-impact scale ($3,938,400 declared valuation across 3 permits).
- Accessory dwelling unit at 242 Morning Sun Ave (Applied)0.45 mi NW
In "Applied" for 2 yr (since Nov 21, 2024), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
- Demolition at 160 Shoreline Hwy - (Issued)0.15 mi N
Active in "Issued" for 6.7 yr (first record Feb 19, 2020) with no new permit activity recorded in 6.7 yr.
Entity-resolved builders & contractors in ½ mile: Donald J Calegari Enterprises (1 on parcel, 1 in ½ mi · Plumbing / water heater / sewer); Owner Builder (28 in ½ mi · Remodel / interior alteration); Owner (22 in ½ mi · Remodel / interior alteration); Ga Higgins (22 in ½ mi · Remodel / interior alteration); Rods General Builders (13 in ½ mi · Remodel / interior alteration).
Permit & Project History on This Parcel (1 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B22575 | Plumbing / water heater / sewer | Issued | Iss. May 13, 2020 | $14,000 | Replacement of two 100 Gallon water heaters in mechanical closet on the south wing of the property in the back — New Plu… |