21284 Tyee St, Castro Valley, CA 94546 Property Records

Alameda County property record for 21284 Tyee St, Castro Valley, CA 94546

Property Summary

Property Type	Single Family Home
Details	2 bd · 1 ba · 1,048 sqft · built 1947
Lot Size	0.117 acres (5,100 sqft)
Owner	Individual Name on Record
Last Sale	$725,000 (Oct 2025)
Tax Bill	$3,233 (2025)
Deeds & Mortgages	Oct 2025 Transfer Oct 2025 Transfer + 4 more
Flood Zone	Zone X (moderate risk)
APN	`415-50-31`

Property Details

APN / Parcel Number

Primary APN	`415-50-31`
Alternative APN	`415-0050-031-00`

Interior

Bedrooms	2 Beds
Full Baths	1 Bath
Total Rooms	5 Rooms
Stories	1 Story
Building Area	1,048 sqft Living Area

Exterior

Year Built	Built 1947
Effective Year Built	Effective 1947
Architectural Style	L-Shape
Construction Type	Wood
Lot Area	5,100 sqft (0.117 acres)

Location & Zoning

Street Address	21284 TYEE ST
City	CASTRO VALLEY
State	CA
Zip	94546-6234
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT: 00011 BLK: 000A TR: 0787
Legal Subdivision	787 EDEN TOWNSHIP
Legal Tract	0787
Legal Lot Number	11
Jurisdiction	ALAMEDA CA
Township / Civil Division	HAYWARD
Census Block Group	3
Census Block	3009
Census Tract	431200

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	2320 ROLLINGWOOD DR, SAN BRUNO, CA 94066-1936
Owner Type	Individual
Vesting	Sole Owner

Deeds, Mortgages & Sale History

Date	Document
Oct 22, 2025	Intrafamily Transfer, Transfer CHICAGO TITLE COMPANY
Oct 22, 2025	Intrafamily Transfer, Transfer CHICAGO TITLE COMPANY
Oct 22, 2025	Grant Deed, Transfer · Conventional Mortgage NBKC BANK
Oct 24, 2019	Quit Claim Deed, Transfer ATTORNEY ONLY
Sep 6, 2019	Quit Claim Deed, Transfer ATTORNEY ONLY
Mar 22, 2019	Affidavit of Death, Transfer NOT AVAILABLE

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Oct 22, 2025 · Amount on Record
Deed Sale	Oct 22, 2025 · Amount on Record
Deed Document Number	2025132970
Prior Transfer Date	Oct 24, 2019
Prior Transfer Doc	0000217442
Record Updated	Oct 29, 2026

October 2025: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	ALAMEDA CA
Recording Date	Oct 22, 2025
Property Address	21284 TYEE ST, CASTRO VALLEY, CA 94546-6234
Document Number	0000132971
Map Reference	MB 12 PG 54 & 55
Instrument Date	Oct 21, 2025
Instrument	2025132971
Transaction Type	Transfer
Record Updated	Nov 27, 2025
Title Company	CHICAGO TITLE COMPANY

Transaction

Tax	$0.00
Amount Accuracy	No Consideration Stated
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Separate Estate/Property
Address	2320 ROLLINGWOOD DR, SAN BRUNO, CA 94066-1936

October 2025: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	ALAMEDA CA
Recording Date	Oct 22, 2025
Property Address	21284 TYEE ST, CASTRO VALLEY, CA 94546-6234
Document Number	0000132972
Map Reference	MB 12 PG 54 & 55
Instrument Date	Oct 21, 2025
Instrument	2025132972
Transaction Type	Transfer
Record Updated	Nov 27, 2025
Title Company	CHICAGO TITLE COMPANY

Transaction

Tax	$0.00
Amount Accuracy	No Consideration Stated
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Separate Estate/Property
Address	2320 ROLLINGWOOD DR, SAN BRUNO, CA 94066-1936

October 2025: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	ALAMEDA CA
Recording Date	Oct 22, 2025
Property Address	21284 TYEE ST, CASTRO VALLEY, CA 94546-6234
Document Number	0000132970
Map Reference	MB 12 PG 54 & 55
Instrument Date	Oct 16, 2025
Instrument	2025132970
Transaction Type	Transfer
Record Updated	Nov 27, 2025
Title Company	CHICAGO TITLE COMPANY

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$797.50
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Separate Estate/Property
Address	2320 ROLLINGWOOD DR, SAN BRUNO, CA 94066-1936

Mortgage

Document Number	0000132973
Date	Oct 22, 2025
Instrument	2025132973

Lender

Name	NBKC BANK
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Nov 1, 2055

October 2019: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	ALAMEDA CA
Recording Date	Oct 24, 2019
Property Address	21284 TYEE ST, CASTRO VALLEY, CA 94546-6234
Document Number	0000217442
Instrument Date	Oct 24, 2019
Instrument	217442
Transaction Type	Transfer
Record Updated	Nov 11, 2019
Title Company	ATTORNEY ONLY

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Revocable Trust
Address	4710 DISCOVERY PT DISCOVERY BAY CA 945059470, DISCOVERY BAY, CA 94505-9470

September 2019: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	ALAMEDA CA
Recording Date	Sep 6, 2019
Property Address	21284 TYEE ST, CASTRO VALLEY, CA 94546-6234
Document Number	0000176362
Instrument Date	Aug 20, 2019
Instrument	176362
Transaction Type	Transfer
Record Updated	Oct 1, 2019
Title Company	ATTORNEY ONLY

Transaction

Tax	$0.00
Additional	Quitclaim Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Revocable Trust
Address	4710 DISCOVERY PT DISCOVERY BAY CA 945059470, DISCOVERY BAY, CA 94505-9470

March 2019: Affidavit of Death, Transfer

Document Type	Affidavit of Death
Jurisdiction	ALAMEDA CA
Recording Date	Mar 22, 2019
Property Address	21284 TYEE ST, CASTRO VALLEY, CA 94546-6234
Document Number	0000051979
Instrument Date	Mar 14, 2019
Instrument	51979
Transaction Type	Transfer
Record Updated	Apr 1, 2019
Title Company	NOT AVAILABLE

Transaction

Tax	$0.00
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Revocable Trust
Address	21284 TYEE ST CASTRO VALLEY CA 945466234, CASTRO VALLEY, CA 94546-6234

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	Hayward Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$725,000 (+283.23%) Land $217,500 Building $507,500
2025	$3,233.00 (+5.17%)	$189,179 (+4.04%) Land $103,447 Building $85,732
2023	$3,074.00	$181,834 Land $99,431 Building $82,403	$768,420

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

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 moderate risk
500-Year Floodplain	Yes 0.2% annual chance
Nearest Special Flood Hazard Area	Zone AE, within 100 ft
Flood Insurance Requirement	Not required lenders may require it
Flood Insurance Cost	Premium on Record median of 31 policies
Community Rating System	Class 7 (15% premium discount)
Nearby Flood Policies	31 in force
Nearby Flood Claims	1 (2022)
Most Recent Claim	Dec 2022 · Severe Winter Storms, Flooding, Landslides, And Mudslides

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	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 459 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 · Fixed Wireless, DSL in parts of the area	5,000 / 5,000
Xfinity Cable	2,000 / 250
Unwired Fixed Wireless	300 / 25
Etheric Networks Fixed Wireless	250 / 100

May also be available: GeoLinks, T-Mobile, Verizon.

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