319 Fourth St

Parcel & Assessor

Lot size:

2,004 sq ft (0.05 ac)

Assessor use:

Single-Resid. - Improved

Addresses on lot:

319 FOURTH ST

State Housing Pathways Screen (ADU & SB 9)

• ADU or junior ADUPossible, with conditions

  Zoned R-2-2.5 (two-family residential): state law allows ADUs where homes are allowed. We read R-2-2.5 from the zoning code's name; we haven't checked it against Sausalito's code text. Very High Fire Hazard Severity Zone covers all of the lot: cities may limit ADUs here for fire safety and evacuation.

• SB 9: two homes on the lotCan't tell

  Zoned R-2-2.5 (two-family residential): we can't tell whether it counts as a single-family zone for SB 9. We read R-2-2.5 from the zoning code's name; we haven't checked it against Sausalito's code text.

• SB 9: split into two lotsCan't tell

  Zoned R-2-2.5 (two-family residential): we can't tell whether it counts as a single-family zone for SB 9. We read R-2-2.5 from the zoning code's name; we haven't checked it against Sausalito's code text.

Mapped Hazard Zones on This Lot

CAL FIRE Fire Hazard Severity Zone

Very High Fire Hazard Severity Zone (Local Responsibility Area) (all of the lot, map Mar 24, 2025)

FEMA National Flood Hazard Layer

Zone X: minimal flood hazard (all of the lot) · FIRM panel 06041C0526E, effective March 16, 2016

CGS Alquist-Priolo Earthquake Fault Zone

Not in an Alquist-Priolo Earthquake Fault Zone

Surrounding Rent & Value Benchmarks (Public Records)

Nearby Activity (½ mile radius, since October 2024)

14 active or recent development projects (14 housing units across completed, permitted, and pipeline stages) and 6 total building permits recorded within ½ mile.

• Building systems3 permits
• Other3 permits