542 Culp Ave
Hayward 94544 · Hayward · Coordinates: 37.65368, -122.07401
Executive Verdict · Public-Records Synthesis
Zoned RL in Hayward with likely ADU & SB 9 infill eligibility and zero mapped flood, fire, or fault hazard overlaps; benchmark value $793,000 ($674,000–$912,000).
Upsides & Opportunities
- ✓ ADU & SB 9 infill pathways screen as likely eligible
Zoned RL supports ministerial ADU/JADU review plus SB 9 both two-unit development and ministerial urban lot split on a 5,092 sq ft lot.
Source: Hayward zoning · CA Gov. Code 66314 & 65852.21
Watchouts & Due Diligence
- ! Mapped flood awareness zone (Zone X: 0.2% annual chance flood hazard (shaded X))
about 12% of the lot of the parcel intersects Zone X: 0.2% annual chance flood hazard (shaded X). Outside mandatory federal SFHA insurance rules, but check local drainage and finished-floor requirements.
Source: FEMA National Flood Hazard Layer (parcel polygon)
- ! Delayed or open permit activity on this parcel
New home: Active in "Issued" for 17 mo (first record Jun 2, 2025) with no new permit activity recorded in 17 mo.
Source: Alameda County building permits (review-time benchmark)
- ! 4 slow or stalled nearby projects within ½ mile
Closest lead: Belmont Estates-Tract 11371-25107 Belmont (PR-00 (0.37 mi N, issued). Inspect timeline history before assuming near-term completion.
Source: Alameda County building permits · HCD APR (½-mile radius)
- ! Bulk building permits not published for Hayward
Permit counts and nearby activity on this page may omit municipal counter records. Request a parcel permit report directly from the local building department.
Source: Source coverage registry (Hayward)
Parcel & Assessor
- Lot size:
- 5,092 sq ft (0.12 ac)
- Assessor use:
- Single family residential homes used as such
- Tax rate area:
- 25
- Addresses on lot:
- 542 CULP AVE; 546 CULP AVE
Zoning & Land Use
RL — Low Density Residential - Min. Lot Size - 5,000 Sq Ft (Hayward)
RL — Low Density Residential - Min. Lot Size - 5,000 Sq Ft (Hayward)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned RL (single-family residential): state law allows ADUs where homes are allowed. We read RL from the zoning code's name; we haven't checked it against Hayward's code text. The parcel point also falls in RL.
- SB 9: two homes on the lotLikely eligible
Zoned RL, a single-family residential zone. We read RL from the zoning code's name; we haven't checked it against Hayward's code text. The parcel point also falls in RL.
- SB 9: split into two lotsLikely eligible
Zoned RL, a single-family residential zone. We read RL from the zoning code's name; we haven't checked it against Hayward's code text. The parcel point also falls in RL. The lot is 5,092 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: 0.2% annual chance flood hazard (shaded X) (about 12% of the lot); Zone X: minimal flood hazard (about 88% of the lot) · FIRM panel 06001C0289G, effective August 3, 2009
- CGS Alquist-Priolo Earthquake Fault Zone
- Not in an Alquist-Priolo Earthquake Fault Zone
Surrounding Rent & Value Benchmarks (Public Records)
Range: $674,000 – $912,000 · Status: Off market
HUD Small Area FMR (ZIP 94544) · FY 2026
Studio $2,100 · 1BR $2,330 · 2BR $2,850 · 3BR $3,640 · 4BR $4,320
Nearby Activity (½ mile radius, since —)
11 active or recent development projects (11 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 17 mo (first record Jun 2, 2025) with no new permit activity recorded in 17 mo.
- Legalize (E) 425 sq ft. detached ADU and 100 sq ft. storage (Issued)On this parcel
Active in "Issued" for 5.5 yr (first record Apr 28, 2021) with no new permit activity recorded in 5.5 yr.
- Belmont Estates-Tract 11371-25107 Belmont (PR-00 (Issued)0.37 mi N
Active in "Issued" for 2.2 yr (first record Sep 10, 2024) with no new permit activity recorded in 2.2 yr. High-impact scale (4 housing units across 0 permits).
- 4 new homes (Entitled)0.37 mi N
Active in "Entitled" for 3.5 yr (first record May 10, 2023) with no new permit activity recorded in 3.5 yr. High-impact scale (4 housing units across 0 permits).
Permit & Project History on This Parcel (0 permits, 2 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 2021, 2025).