71 Avenida Martinez
El Sobrante 94803 · Unincorporated Contra Costa · Coordinates: 37.96732, -122.29458
Parcel & Assessor
- Lot size:
- 11,574 sq ft (0.27 ac)
- Assessor use:
- Single Family, 1 residence on 1 site, with or without
- Tax rate area:
- 85004
- Addresses on lot:
- 71 AVENIDA MARTINEZ
Zoning & Land Use
R-7 — Single Family Residential (Unincorporated Contra Costa)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned R-7 (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotPossible, with conditions
Zoned R-7, a single-family residential zone. FEMA Special Flood Hazard Area (Zone A) covers about 78% 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-7, a single-family residential zone. The lot is 11,574 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 78% 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 78% of the lot); Zone X: minimal flood hazard (about 22% of the lot) · FIRM panel 06013C0233G, 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: $649,000 – $879,000 · 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 November 2024)
9 active or recent development projects (9 housing units across completed, permitted, and pipeline stages) and 74 total building permits recorded within ½ mile.
- Adds housing (ADU)7 permits (7 units)
- Additions & renovations5 permits
- Building systems49 permits
- Repairs2 permits
- Other11 permits
Developments Deserving Closer Investigation & Active Area Builders
- New home (Issued)On this parcel
Active in "Issued" for 21 mo (first record Jan 30, 2025) with no new permit activity recorded in 21 mo.
- New home (Entitled)320 ft S
Active in "Entitled" for 3.9 yr (first record Nov 28, 2022) with no new permit activity recorded in 3.9 yr.
- New home (Entitled)0.12 mi W
Active in "Entitled" for 6.3 yr (first record Jul 22, 2020) with no new permit activity recorded in 6.3 yr.
- Accessory dwelling unit at 2851 Sheldon Dr Unit 2 (In review)0.13 mi N
Active in "In review" for 4.8 yr (first record Jan 4, 2022) with no new permit activity recorded in 3.9 yr.
Permit & Project History on This Parcel (0 permits, 1 grouped projects)
No building permits recorded on this parcel in our dataset.
State HCD Housing Element APR records on this parcel: 1 entry (report years 2025).