70 Haven Ln
Walnut Creek 94597 · Unincorporated Contra Costa · Coordinates: 37.92341, -122.05492
Parcel & Assessor
- Lot size:
- 23,288 sq ft (0.53 ac)
- Assessor use:
- Single Family, 1 residence on 1 site, with or without
- Tax rate area:
- 98008
- Addresses on lot:
- 70 HAVEN LN
Zoning & Land Use
R-12 — Single Family Residential (Unincorporated Contra Costa)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned R-12 (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotLikely eligible
Zoned R-12, a single-family residential zone.
- SB 9: split into two lotsLikely eligible
Zoned R-12, a single-family residential zone. The lot is 23,288 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 06013C0291F, 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: $916,000 – $1,240,000 · Status: Off market
HUD Small Area FMR (ZIP 94597) · FY 2026
Studio $2,390 · 1BR $2,660 · 2BR $3,250 · 3BR $4,160 · 4BR $4,930
Nearby Activity (½ mile radius, since —)
9 active or recent development projects (31 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 (Entitled)On this parcel
Active in "Entitled" for 12 mo (first record Oct 20, 2025) with no new permit activity recorded in 12 mo.
- Del Hombre Apartments (Issued)0.4 mi N
Active in "Issued" for 5.6 yr (first record Mar 22, 2021) with no new permit activity recorded in 5.6 yr. High-impact scale (282 housing units, 36 deed-restricted affordable across 0 permits).
- Del Hombre Apartments (Issued)0.4 mi N
Active in "Issued" for 6.2 yr (first record Aug 11, 2020) with no new permit activity recorded in 5.6 yr. High-impact scale (284 housing units, 36 deed-restricted affordable across 0 permits).
- Oak Grove Townhomes (Issued)0.17 mi W
Active in "Issued" for 20 mo (first record Mar 10, 2025) with no new permit activity recorded in 20 mo. High-impact scale (5 housing units across 0 permits).
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).