3557 Miflin Ave
El Sobrante 94803 · Unincorporated Contra Costa · Coordinates: 37.96511, -122.32094
Parcel & Assessor
- Lot size:
- 10,888 sq ft (0.25 ac)
- Assessor use:
- Single Family, 1 residence on 1 site, with or without
- Tax rate area:
- 85049
- Addresses on lot:
- 3557 MIFLIN AVE
Zoning & Land Use
R-6 — Single Family Residential (Unincorporated Contra Costa)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned R-6 (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotPossible, with conditions
Zoned R-6, a single-family residential zone. FEMA Special Flood Hazard Area (Zone A) covers about 39% 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 R-6, a single-family residential zone. The lot is 10,888 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 A) covers about 39% 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 A: 1% annual chance flood (Special Flood Hazard Area) (about 39% of the lot); Zone X: minimal flood hazard (about 61% of the lot) · FIRM panel 06013C0229H, effective March 21, 2017
- CGS Alquist-Priolo Earthquake Fault Zone
- Not in an Alquist-Priolo Earthquake Fault Zone
Surrounding Rent & Value Benchmarks (Public Records)
Range: $647,000 – $875,000 · Status: Off market
HUD Small Area FMR (ZIP 94803) · FY 2026
Studio $2,020 · 1BR $2,240 · 2BR $2,740 · 3BR $3,500 · 4BR $4,150
Nearby Activity (½ mile radius, since October 2024)
1 active or recent development project (1 housing units across completed, permitted, and pipeline stages) and 24 total building permits recorded within ½ mile.
- Additions & renovations3 permits
Developments Deserving Closer Investigation & Active Area Builders
- New home (Entitled)On this parcel
Active in "Entitled" for 7.7 yr (first record Feb 8, 2019) with no new permit activity recorded in 7.7 yr.
- Demolition at 3563 San Pablo Dam Rd (Applied)430 ft SE
Active in "Applied" for 4.4 yr (first record Jun 15, 2022) with no new permit activity recorded in 4.4 yr.
- New home (Entitled)0.14 mi SW
Active in "Entitled" for 3.1 yr (first record Sep 27, 2023) with no new permit activity recorded in 3.1 yr.
- New home (Entitled)0.14 mi SW
Active in "Entitled" for 3.1 yr (first record Sep 27, 2023) with no new permit activity recorded in 3.1 yr.
Permit & Project History on This Parcel (0 permits, 2 grouped projects)
No building permits recorded on this parcel in our dataset.
State HCD Housing Element APR records on this parcel: 3 entries (report years 2019, 2021).