Alameda County property record for 28839 Mack St, Hayward, CA 94545
| Property Type | Industrial Condominium |
|---|---|
| Details | 2,808 sqft · built 2004 |
| Lot Size | 1.34 acres (58,686 sqft) |
| Owner | 2 Company Names on Record |
| Last Sale | $485,000 (May 2005) |
| Tax Bill | $8,430 (2025) |
| Deeds & Mortgages | Feb 2018 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 432-80-29 |
| Primary APN | 432-80-29 |
|---|---|
| Alternative APN |
|
| Stories | 1 Story |
|---|---|
| Building Area | 2,808 sqft Total Area |
| Year Built | Built 2004 |
|---|---|
| Effective Year Built | Effective 2005 |
| Construction Type | Masonry / Concrete Block |
| Fire Resistance | Masonry Walls, Wood Interior |
| Lot Area | 58,686 sqft |
| Street Address | 28839 MACK ST |
|---|---|
| City | HAYWARD |
| State | CA |
| Zip | 94545-1215 |
| Property Category | Industrial |
| Property Type | Industrial > Industrial Condominium |
| Legal Description | BK: P276 PAGE: 67 LOT: BLDG: UNIT:7 |
| Legal Subdivision | PARCEL MAP 8256 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 4 |
| Census Block | 4005 |
| Census Tract | 437101 |
Source: Alameda County records, as of August 26, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Company Names on Record |
|---|---|
| Mailing Address | 3402 OTTER CT, HAYWARD, CA 94542-2616 |
| Owner Type | Company |
| Vesting | Trust, Family Revocable Trust |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | May 19, 2005 · Amount on Record |
| Deed Sale | May 19, 2005 · Amount on Record |
| Deed Document Number | 2005206231 |
| Last Transfer Date | Oct 15, 2024 |
| Transfer Doc | 0000134246 |
| Record Updated | Oct 29, 2026 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Feb 1, 2018 |
| Property Address | 28839 MACK ST, HAYWARD, CA 94545-1215 |
| Document Number | 0000019213 |
| Instrument Date | Jan 19, 2018 |
| Instrument | 19213 |
| Transaction Type | Transfer |
| Record Updated | Feb 20, 2018 |
| Title Company | CHICAGO TITLE COMPANY |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants with Right of Survivorship |
| Address | 3402 OTTER CT HAYWARD CA 945422616, HAYWARD, CA 94542-2616 |
Source: Alameda County assessment roll, as of August 5, 2026
| Type | Name |
|---|---|
| State | California |
| County | Alameda County |
| Municipality | Hayward City |
| Unified School District | San Lorenzo Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $689,500 (+2%) Land $120,840 Building $568,660 | |
| 2025 | $8,430.00 (+2.14%) | $675,983 (+4.04%) Land $118,471 Building $557,512 |
| 2023 | $8,253.00 | $649,739 Land $113,871 Building $535,868 |
Assessed value is set for property tax purposes and is not a market price estimate.
Source: FEMA National Flood Hazard Layer, effective May 25, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 7 in force |
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 80% of the US · lower than 88% of California |
|---|---|
| Wildfire Likelihood | 0.01% annual chance |
| Exposure | None beyond ember reach |
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | CITY OF HAYWARD serves 162,954 people · EPA ID CA0110006 |
|---|---|
| Water Source | Purchased surface water from SAN FRANCISCO REGIONAL WATER SYSTEM |
| Last State Inspection | Mar 2025 |
| Lead | Under 1 ppb (2023–2025) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | None last 3 years |
Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.
Source: FCC Broadband Data Collection, based on 84 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Fiber · Cable in parts of the area | 2,000 / 250 |
| Tekify Fiber & Wireless Fixed Wireless | 530 / 115 |
| Unwired Fixed Wireless | 300 / 25 |
| AT&T Fixed Wireless | 100 / 20 |
May also be available: Etheric Networks, GeoLinks, RobinsonHSS, T-Mobile, Verizon.
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