3947 Happy Valley Rd
Lafayette 94549 · Lafayette · Coordinates: 37.90578, -122.14849
Parcel & Assessor
- Lot size:
- 65,776 sq ft (1.51 ac)
- Assessor use:
- Single Family, 1 residence on 1 site, with or without
- Tax rate area:
- 14002
- Addresses on lot:
- 3947 HAPPY VALLEY RD; 3947 HAPPY VALLEY RD 6 3947-A
Zoning & Land Use
No published city zoning district at parcel centroid.
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADUCan't tell
We don't have a zoning map for Lafayette.
- SB 9: two homes on the lotCan't tell
We don't have a zoning map for Lafayette.
- SB 9: split into two lotsCan't tell
We don't have a zoning map for Lafayette.
Mapped Hazard Zones on This Lot
- CAL FIRE Fire Hazard Severity Zone
- High Fire Hazard Severity Zone (Local Responsibility Area) (all of the lot, map Mar 24, 2025)
- FEMA National Flood Hazard Layer
- Zone X: minimal flood hazard (all of the lot) · FIRM panel 06013C0269F, 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: $1,810,000 – $2,448,000 · Status: Off market
HUD Small Area FMR (ZIP 94549) · FY 2026
Studio $2,880 · 1BR $3,210 · 2BR $3,920 · 3BR $5,010 · 4BR $5,940
Nearby Activity (½ mile radius, since —)
5 active or recent development projects (5 housing units across completed, permitted, and pipeline stages) and 0 total building permits recorded within ½ mile.
Developments Deserving Closer Investigation & Active Area Builders
- Wagner ADU22-25 (Issued)On this parcel
Active in "Issued" for 14 mo (first record Aug 26, 2025) with no new permit activity recorded in 14 mo.
- New home (Issued)280 ft NE
Active in "Issued" for 4.3 yr (first record Jul 20, 2022) with no new permit activity recorded in 4.3 yr.
- Giacovelli ADU (Issued)0.11 mi E
Active in "Issued" for 3.2 yr (first record Aug 16, 2023) with no new permit activity recorded in 3.2 yr.
- Giacovelli ADU (Issued)0.11 mi E
Active in "Issued" for 4 yr (first record Nov 10, 2022) with no new permit activity recorded in 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: 1 entry (report years 2025).