20275 Stanton Ave, Castro Valley, CA 94546 Property Records

Alameda County property record for 20275 Stanton Ave, Castro Valley, CA 94546

Property Summary

Property Type	Duplex
Details	8 bd · 4 ba · 1,680 sqft · built 1937
Lot Size	0.115 acres (5,000 sqft)
Owner	2 Company Names on Record
Last Sale	$319,500 (Nov 2025)
Tax Bill	$15,064 (2025)
Deeds & Mortgages	Nov 2025 Sale Nov 2025 Sale + 2 more
Flood Zone	Zone X (minimal risk)
APN	`84A-216-26`

Property Details

APN / Parcel Number

Primary APN	`84A-216-26`
Alternative APN	`084A-0216-026-00`

Interior

Bedrooms	8 Beds
Full Baths	4 Baths
Total Rooms	10 Rooms
Units	2 Units
Stories	1 Story
Building Area	1,680 sqft Living Area

Exterior

Year Built	Built 1937
Effective Year Built	Effective 1957
Construction Type	Wood
Lot Area	5,000 sqft (0.115 acres)

Location & Zoning

Street Address	20275 STANTON AVE
City	CASTRO VALLEY
State	CA
Zip	94546-5225
Property Category	Residential
Property Type	Residential > Multi-Unit > Duplex
Legal Description	LOT: 00026 BLK: AR: 084A PAGE: 0216
Legal Subdivision	1 STANTON
Jurisdiction	ALAMEDA CA
Township / Civil Division	HAYWARD
Census Block Group	2
Census Block	2002
Census Tract	430600

Owner

Source: Alameda County records, as of September 30, 2026

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Owner of Record	2 Company Names on Record
Mailing Address	109 PASATIEMPO DR, SANTA CRUZ, CA 95060-1428
Owner Type	Company
Vesting	Trust

Deeds, Mortgages & Sale History

Date	Document
Nov 21, 2025	Grant Deed, Transfer
Nov 21, 2025	Deed, Transfer
Feb 13, 2025	Grant Deed, Transfer
Apr 4, 2022	Grant Deed, Transfer

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Nov 21, 2025 · Amount on Record
Deed Sale	Nov 21, 2025 · Amount on Record
Deed Document Number	2025147873
Prior Transfer Date	Jan 4, 2022
Prior Transfer Doc	0000067782
Record Updated	Oct 29, 2026

November 2025: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	ALAMEDA CA
Recording Date	Nov 21, 2025
Property Address	20275 STANTON AVE, CASTRO VALLEY, CA 94546-5225
Document Number	0000147873
Map Reference	MB 17 PG 6
Instrument Date	Oct 30, 2025
Instrument	2025147873
Transaction Type	Transfer
Record Updated	Dec 24, 2025

Transaction

Amount	Amount Recorded
Tax	$351.45
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	109 PASATIEMPO DR, SANTA CRUZ, CA 95060-1428

November 2025: Deed, Transfer

Document Type	Deed
Jurisdiction	ALAMEDA CA
Recording Date	Nov 21, 2025
Property Address	20275 STANTON AVE, CASTRO VALLEY, CA 94546-5225
Document Number	0000147872
Map Reference	MB 17 PG 6
Instrument Date	Oct 30, 2025
Instrument	2025147872
Transaction Type	Transfer
Record Updated	Dec 24, 2025

Transaction

Tax	$0.00
Amount Accuracy	No Consideration Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	109 PASATIEMPO DR, SANTA CRUZ, CA 95060-1428

February 2025: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	ALAMEDA CA
Recording Date	Feb 13, 2025
Property Address	20275 STANTON AVE, CASTRO VALLEY, CA 94546-5225
Document Number	0000023129
Map Reference	MB 17 PG 6
Instrument Date	Feb 3, 2024
Instrument	2025023129
Transaction Type	Transfer
Record Updated	Dec 24, 2025

Transaction

Tax	$0.00
Amount Accuracy	No Consideration Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	40 MASON CT, ELWOOD, NY 11731-6410

April 2022: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	ALAMEDA CA
Recording Date	Apr 4, 2022
Property Address	20275 STANTON AVE, CASTRO VALLEY, CA 94546-5225
Document Number	0000067782
Map Reference	MB 17 PG 6
Instrument Date	Jan 4, 2022
Instrument	2022067782
Transaction Type	Transfer
Record Updated	Dec 24, 2025

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	132 25TH AVE, SANTA CRUZ, CA 95062-5310

Tax Assessment & Valuation

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

Property Jurisdictions

Type	Name
State	California
County	Alameda County
Unified School District	Castro Valley Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$1,139,571 (-0.11%) Land $341,871 Building $797,700
2025	$15,064.00 (+4.09%)	$1,140,790 (+4.04%) Land $342,237 Building $798,553
2023	$14,472.00	$1,096,500 Land $328,950 Building $767,550

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

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it

Values are read at the parcel center point; lenders make the official flood determination.

Wildfire

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Not rated no burnable land within 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	EAST BAY MUD serves 1,468,000 people · EPA ID CA0110005
Water Source	Surface water
Last State Inspection	Dec 2021
Lead	Under 1 ppb (2022–2024) 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. This system sells water to local utilities; the supplier billing this address may be one of them.

Internet Providers

Source: FCC Broadband Data Collection, based on 709 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Sonic Telecom Fiber	10,000 / 10,000
AT&T Fiber · DSL in parts of the area	5,000 / 5,000
Xfinity Cable	2,000 / 2,000
Unwired Fixed Wireless	300 / 25
Verizon Fixed Wireless	300 / 20
Etheric Networks Fixed Wireless	250 / 100

May also be available: GeoLinks, T-Mobile.

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