312 1st Ave S
Pacheco 94553 · Unincorporated Contra Costa · Coordinates: 37.98269, -122.07529
Parcel & Assessor
- Lot size:
- 11,979 sq ft (0.28 ac)
- Assessor use:
- Single Family, 1 residence on 1 site, with or without
- Tax rate area:
- 79267
- Addresses on lot:
- 312 1ST AVE
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 lotLikely eligible
Zoned R-7, a single-family residential zone.
- SB 9: split into two lotsLikely eligible
Zoned R-7, a single-family residential zone. The lot is 11,979 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
- Not in a State-mapped fire hazard severity zone
- FEMA National Flood Hazard Layer
- Zone X: minimal flood hazard (all of the lot) · FIRM panel 06013C0277F, effective June 16, 2009
- CGS Alquist-Priolo Earthquake Fault Zone
- Not in an Alquist-Priolo Earthquake Fault Zone
Surrounding Rent & Value Benchmarks (Public Records)
Range: $672,000 – $910,000 · Status: Off market
HUD Small Area FMR (ZIP 94553) · FY 2026
Studio $2,030 · 1BR $2,260 · 2BR $2,760 · 3BR $3,530 · 4BR $4,180
Nearby Activity (½ mile radius, since —)
2 active or recent development projects (2 housing units across completed, permitted, and pipeline stages) and 0 total building permits recorded within ½ mile.
Developments Deserving Closer Investigation & Active Area Builders
- New home (Issued)On this parcel
Active in "Issued" for 3.1 yr (first record Sep 14, 2023) with no new permit activity recorded in 3.1 yr.
- New home (Entitled)150 ft SW
Active in "Entitled" for 17 mo (first record May 27, 2025) with no new permit activity recorded in 17 mo.
- New home (Issued)0.23 mi S
Active in "Issued" for 7.2 yr (first record Aug 29, 2019) with no new permit activity recorded in 7.2 yr.
- New home (Entitled)0.25 mi N
Active in "Entitled" for 4.4 yr (first record Jun 27, 2022) with no new permit activity recorded in 4.4 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: 2 entries (report years 2023, 2024).