21020 Alexander Ct, Hayward, CA 94545 Property Records

Alameda County property record for 21020 Alexander Ct, Hayward, CA 94545

Property Summary

Property Type	R&D Facility, Laboratory
Details	4 ba · 36,000 sqft · built 1982
Lot Size	2.05 acres (89,733 sqft)
Owner	Company Name on Record
Tax Bill	$55,943 (2025)
Flood Zone	Zone X (minimal risk)
APN	`439-63-7`

Property Details

APN / Parcel Number

Primary APN	`439-63-7`
Alternative APN	`439-0063-007-00`

Interior

Full Baths	4 Baths
Stories	1 Story
Building Area	36,000 sqft Total Area

Exterior

Year Built	Built 1982
Effective Year Built	Effective 1983
Architectural Style	L-Shape
Construction Type	Masonry / Concrete Block
Fire Resistance	Masonry Walls, Wood Interior
Lot Area	89,733 sqft

Location & Zoning

Street Address	21020 ALEXANDER CT
City	HAYWARD
State	CA
Zip	94545-1234
Property Category	Industrial
Property Type	Industrial > R&D Facility, Laboratory
Legal Description	LOT: 00002 BLK: TR: 5013 ;LOT: 00003 BLK: TR: 5013 ;LOT: 00004 BLK: TR: 5013
Legal Tract	5013
Legal Lot Number	2
Jurisdiction	ALAMEDA CA
Township / Civil Division	HAYWARD
Census Block Group	4
Census Block	4028
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	Company Name on Record
Mailing Address	2055 LAURELWOOD RD, 130, SANTA CLARA, CA 95054-2729
Owner Type	Company
Vesting	Company

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Name on Deed
Last Transfer Date	Feb 29, 2008
Transfer Doc	0000010185
Record Updated	Sep 20, 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		$4,690,737 (+2%) Land $879,433 Building $3,811,304
2025	$55,943.00 (+2.16%)	$4,598,772 (+4.04%) Land $862,191 Building $3,736,581
2023	$54,760.00	$4,420,234 Land $828,718 Building $3,591,516

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.