28831 Mack St, Hayward, CA 94545 Property Records

Alameda County property record for 28831 Mack St, Hayward, CA 94545

Property Summary

Property Type	Industrial Condominium
Details	2,592 sqft · built 2004
Lot Size	1.34 acres (58,686 sqft)
Owner	Individual Name on Record
Last Sale	$410,000 (Jan 2005)
Tax Bill	$7,198 (2025)
Flood Zone	Zone X (minimal risk)
APN	`432-80-27`

Property Details

APN / Parcel Number

Primary APN	`432-80-27`
Alternative APN	`432-0080-027-00`

Interior

Stories	1 Story
Building Area	2,592 sqft Total Area

Exterior

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

Location & Zoning

Street Address	28831 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:5
Jurisdiction	ALAMEDA CA
Township / Civil Division	HAYWARD
Census Block Group	4
Census Block	4005
Census Tract	437101

Owner

Source: Alameda County records, as of August 5, 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	Individual Name on Record
Mailing Address	28831 MACK ST, HAYWARD, CA 94545-1215
Owner Type	Individual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Jan 21, 2005 · Amount on Record
Deed Sale	Jan 21, 2005 · Amount on Record
Deed Document Number	200525262
Record Updated	Oct 29, 2026

Tax Assessment & Valuation

Source: Alameda County assessment roll, as of August 5, 2026

Property Jurisdictions

Type	Name
State	California
County	Alameda County
Municipality	Hayward City
Unified School District	San Lorenzo Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$582,875 (+2%) Land $122,119 Building $460,756
2025	$7,198.00 (+2.13%)	$571,449 (+4.04%) Land $119,725 Building $451,724
2023	$7,048.00	$549,264 Land $115,077 Building $434,187

Assessed value is set for property tax purposes and is not a market price estimate.

Flood

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.

Wildfire

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.

Drinking Water

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

Violations Reported to EPA

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.

Internet Providers

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.