701 Appian Way
El Sobrante 94803 · Unincorporated Contra Costa · Coordinates: 37.98280, -122.29734
Parcel & Assessor
- Lot size:
- 6,528 sq ft (0.15 ac)
- Assessor use:
- Single Family, 1 residence on 1 site, with or without
- Tax rate area:
- 85004
- Addresses on lot:
- 701 APPIAN WAY
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 lotLikely eligible
Zoned R-6, a single-family residential zone.
- SB 9: split into two lotsLikely eligible
Zoned R-6, a single-family residential zone. The lot is 6,528 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 06013C0231G, 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: $621,000 – $841,000 · 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 —)
12 active or recent development projects (12 housing units across completed, permitted, and pipeline stages) and 0 total building permits recorded within ½ mile.
Developments Deserving Closer Investigation & Active Area Builders
- 5 new homes (Entitled)0.27 mi E
Active in "Entitled" for 8.3 yr (first record Aug 6, 2018) with no new permit activity recorded in 8.3 yr. High-impact scale (5 housing units across 0 permits).
- New home (Entitled)420 ft NW
Active in "Entitled" for 2.7 yr (first record Mar 7, 2024) with no new permit activity recorded in 2.7 yr.
- New home (Issued)0.14 mi NW
Active in "Issued" for 18 mo (first record May 7, 2025) with no new permit activity recorded in 18 mo.
- 2 new homes (Entitled)0.15 mi S
Active in "Entitled" for 3.1 yr (first record Oct 3, 2023) with no new permit activity recorded in 3.1 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 2024, 2025).