Hayward 94545 · APN 455-8-21 · Hayward
Since — within ½ mile: 3 permitted.
3 projects with a record in this window, grouped by us from permits and State housing reports. Units are as proposed on each project's latest record and counted at its current stage.
No permit activity recorded within ½ mile.
$1,067,000
Benchmark range: $907,000 – $1,227,000
Public-records benchmark estimate combining Zillow Home Value Index (Data provided by Zillow), Census ACS 5-year estimates, parcel land-use/lot characteristics, and issued building permits. Not an official appraisal.
We don't have building permits for Hayward, so we can't show what has been permitted nearby.
Permit counts, by the date issued (or applied, if not yet issued). Lot splits are planning cases, which we don't have.
We read public zoning and hazard maps against state law (ADUs: Gov. Code 66314; SB 9: Gov. Code 65852.21 and 66411.7). Local rules, title, tenancy history and site conditions can change the answer. Check with Hayward's planning department before relying on it.
Sources: City of Hayward GIS, Zoning (retrieved Nov 9, 2026) · CAL FIRE Office of the State Fire Marshal, Fire Hazard Severity Zones in the State Responsibility Area (effective 2024-04-01) (retrieved Nov 9, 2026) · CAL FIRE Office of the State Fire Marshal, Fire Hazard Severity Zones in the Local Responsibility Area (map dated 2025-03-24) (retrieved Nov 9, 2026) · FEMA, National Flood Hazard Layer — flood hazard zones (retrieved Nov 9, 2026) · FEMA, National Flood Hazard Layer — FIRM panels (retrieved Nov 9, 2026) · California Geological Survey, Alquist-Priolo Earthquake Fault Zones (retrieved Nov 9, 2026) · Zoning classes: our classification of RL as single-family residential, from the code's name only
Chronological history of building permit applications and issuances, snapshot-dated status changes, State housing entitlements, surrounding development within ½ mile, and area home-value trends.
Permit issued and active for 7.7 yr (first record Feb 20, 2019), with no completion or new permit record in 7.7 yr. · 1 unit
Permit issued and active for 2.4 yr (first record Jun 17, 2024), with no completion or new permit record in 2.4 yr. · 1 unit
Permit issued and active for 2.3 yr (first record Aug 7, 2024), with no completion or new permit record in 2.3 yr. · 1 unit
Permit issued and active for 2.1 yr (first record Oct 15, 2024), with no completion or new permit record in 2.1 yr. · 1 unit
Latest published Zillow Home Value Index (ZHVI) update
Changed from $901,196 in September 2025 to $874,613 in September 2026.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94545 (not a parcel appraisal)
1 unit
Source: Alameda County building permits & HCD APR (grouped project within ½ mile)
1 unit
Source: Alameda County building permits & HCD APR (grouped project within ½ mile)
Source: Alameda County building permits & HCD APR (grouped project within ½ mile)
Annual ZIP 94545 home-value index checkpoint
Changed from $983,038 in September 2024 to $901,196 in September 2025.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94545 (not a parcel appraisal)
1 unit
Source: Alameda County building permits & HCD APR (grouped project within ½ mile)
1 unit
Source: Alameda County building permits & HCD APR (grouped project within ½ mile)
Source: Alameda County building permits & HCD APR (grouped project within ½ mile)
Annual ZIP 94545 home-value index checkpoint
Changed from $921,841 in September 2023 to $983,038 in September 2024.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94545 (not a parcel appraisal)
1 unit
Source: Alameda County building permits & HCD APR (grouped project within ½ mile)
1 unit
Source: Alameda County building permits & HCD APR (grouped project within ½ mile)
1 unit
Records span Sep 15, 2022 to May 9, 2024 (0 permits).
Source: Alameda County building permits & HCD APR (grouped project within ½ mile)
1 unit
Records span Sep 20, 2022 to Apr 23, 2024 (0 permits).
Source: Alameda County building permits & HCD APR (grouped project within ½ mile)
Source: Alameda County building permits & HCD APR (grouped project within ½ mile)
Source: Alameda County building permits & HCD APR (grouped project within ½ mile)
Cross-referenced intelligence from our historical development graph—connecting parcels, permits, entity-resolved builders, empirical review-time distributions, and neighborhood renovation trends.
Explore full Hayward development graph →Active in "Issued" for 15 mo (first record Aug 5, 2025) with no new permit activity recorded in 15 mo.
Active in "Issued" for 2.3 yr (first record Aug 7, 2024) with no new permit activity recorded in 2.3 yr.
Active in "Issued" for 2.1 yr (first record Oct 15, 2024) with no new permit activity recorded in 2.1 yr.
Active in "Issued" for 7.7 yr (first record Feb 20, 2019) with no new permit activity recorded in 7.7 yr.
Active in "Issued" for 2.4 yr (first record Jun 17, 2024) with no new permit activity recorded in 2.4 yr.
HUD Small Area Fair Market Rent · ZIP 94545
HUD FY 2026 · 40th-percentile gross rentCensus ACS 5-year median gross rent (all bedroom counts combined):
Area home-value benchmarks (not an appraisal)
ZIP & neighborhood mediansUnder California Proposition 13, the seller's historical assessed value does not carry over to a buyer. On sale, the parcel is reassessed at the purchase price: 1.00% base rate ($10,650/yr) + local voter-approved bond debt ($2,343/yr) + fixed direct levies/Mello-Roos ($450/yr).
Insurance & hazard context:
−$51,717/yr
Cash needed: $234,300
NOI: $12,905/yr
P&I: $5,385/mo
For $0/mo net cash flow
At $3,050/mo rent
| Scenario | Assumptions | Year 1 Rent | Year 1 Cash Flow | Cash-on-Cash | Break-Even Rent | Year 5 Cash Flow |
|---|---|---|---|---|---|---|
| Conservative | −8% starting rent, +3% vacancy, +3% combined maintenance/CapEx, 1.5%/yr rent growth | $2,806/mo | −$4,660/mo | -23.9% | $9,311/mo | −$4,643/mo |
| Base (your inputs) | Your entered assumptions, 3.0%/yr rent growth | $3,050/mo | −$4,310/mo | -22.1% | $8,618/mo | −$4,120/mo |
| Optimistic (cap-limited) | +6% starting rent, 3% vacancy, 4.5%/yr rent growth (capped by local ordinance ceiling of 5.0%/yr) | $3,233/mo | −$4,109/mo | -21.0% | $8,418/mo | −$3,722/mo |
Rental regulatory context (informational only — not legal advice):
California AB 1482 (Tenant Protection Act, Civ. Code § 1947.12) caps annual rent increases at 5% + local CPI (max 10%) on covered properties. In Hayward: Hayward Residential Rent Stabilization Ordinance — 5% annual cap for covered pre-1979 multifamily rental units. Official program rules ↗
Finaled / completed1 unitsJan 10, 2022 – Dec 16, 2022
We group related permits and State housing reports into projects. That grouping is our inference, not an official record.
No building permits are recorded for this parcel since 2016.
| Report year | Project / record | Type | Entitled | Permitted | Completed | Deed-restricted |
|---|---|---|---|---|---|---|
| 2022 | 1291 Thornwall LN ADU(202102306) | ADU · Renter | — | — | 1 (Dec 16, 2022) | — |
| 2022 | 1291 Thornwall Ln ADU(202102306) | ADU · Renter | — | 1 (Jan 10, 2022) | — | — |
Source: California HCD, Housing Element Annual Progress Report — Table A2 · Geography: project (parcel) · Retrieved Nov 9, 2026 · From Hayward's Housing Element Annual Progress Reports. A project can appear in several report years as it moves from entitlement to permit to completion.
Source: City of Hayward GIS, Zoning · Geography: zoning district polygon at parcel point · Retrieved Nov 9, 2026
0.12 acres
Assessor's classification for assessment purposes. This is not zoning.
1291 THORNWALL LN; 1293 THORNWALL LN
Source: Alameda County Assessor / Information Technology Department, Parcel Boundaries · Geography: parcel · Retrieved Nov 9, 2026
Look up assessed values and parcel maps by parcel number 455-8-21. Assessed value is not market value.
Search by parcel number 455-8-21 (Alameda County Treasurer-Tax Collector)
The official flood hazard map for this location. Our reading of it is under What could be built here.
This site does not show owner names.