21712 Ada St, Castro Valley, CA 94546 Property Records

Alameda County property record for 21712 Ada St, Castro Valley, CA 94546

Property Summary

Property Type	Single Family Home
Details	2 bd · 1 ba · 905 sqft · built 1948
Lot Size	0.117 acres (5,106 sqft)
Owner	Individual Name on File
Last Sale	$680,000 (Dec 2020)
Tax Bill	$9,732 (2025)
Deeds & Mortgages	Dec 2020 Sale & Mortgage Aug 2020 Mortgage + 3 more
Flood Zone	Zone X (minimal risk)
APN	`415-90-94`

Property Details

APN / Parcel Number

Primary APN	`415-90-94`
Alternative APN	`415-0090-094-00`

Interior

Bedrooms	2 Beds
Full Baths	1 Bath
Total Rooms	5 Rooms
Stories	1 Story
Building Area	905 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1948
Effective Year Built	Effective 1980
Architectural Style	L-Shape
Construction Type	Wood
Lot Area	5,106 sqft (0.117 acres)
Parking Spaces	1 Parking Space

Utilities, Heating & Cooling

Heating System	Floor/Wall Furnace

Location & Zoning

Street Address	21712 ADA ST
City	CASTRO VALLEY
State	CA
Zip	94546-6302
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT: 00005 BLK: 0001 TR: 0871
Legal Subdivision	871 EDEN TOWNSHIP
Legal Tract	0871
Legal Lot Number	5
Jurisdiction	ALAMEDA CA
Township / Civil Division	HAYWARD
Census Block Group	1
Census Block	1003
Census Tract	431200

Owner

21712 Ada St is owned and occupied by an individual who bought it in December 2020.

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

Owner of Record	Individual Name on File
Mailing Address	21712 ADA ST, CASTRO VALLEY, CA 94546-6302
Occupancy	Owner Occupied
Owner Type	Individual

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

Deeds, Mortgages & Sale History

Date	Document
Dec 17, 2020	Grant Deed, Transfer · Conventional Mortgage WELLS FARGO BANK NA
Aug 18, 2020	Deed of Trust, Mortgage · Conventional Mortgage ROBERT GALLUCCI 401(K) PSP & T
Aug 18, 2020	Grant Deed, Transfer · Conventional Mortgage KUNDAN VENTURES LLC
Aug 18, 2020	Affidavit of Death, Transfer FIRST AMERICAN TITLE
Aug 18, 2020	Affidavit of Death, Transfer FIRST AMERICAN TITLE

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Dec 17, 2020 · Amount on File
Deed Sale	Dec 17, 2020 · Amount on File
Prior Sale	Aug 18, 2020 · Amount on File
Deed Document Number	2020355676
Prior Transfer Date	Aug 27, 1997
Prior Transfer Doc	0000251120
Record Updated	Oct 29, 2026

December 2020: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	ALAMEDA CA
Recording Date	Dec 17, 2020
Property Address	21712 ADA ST, CASTRO VALLEY, CA 94546-6302
Document Number	0000355676
Map Reference	MB 27 PG 68
Instrument Date	Dec 10, 2020
Instrument	2020355676
Transaction Type	Transfer
Record Updated	Aug 19, 2021
Title Company	FIRST AMERICAN TITLE COMPANY

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$748.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	21712 ADA ST, CASTRO VALLEY, CA 94546-6302

Mortgage

Document Number	0000355677
Date	Dec 17, 2020
Instrument	2020355677

Lender

Name	WELLS FARGO BANK NA
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Jan 1, 2051

August 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	ALAMEDA CA
Property Address	21712 ADA ST, CASTRO VALLEY, CA 94546-6302
Document Number	0000213314
Instrument Date	Aug 18, 2020
Transaction Type	Mortgage
Record Updated	Oct 23, 2020
Title Company	NOT AVAILABLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	164 ROBLES WAY #287 VALLEJO CA 945918039, 287, VALLEJO, CA 94591-8039
Investor	Possibly a Property Investor

Mortgage

Document Number	0000213314
Date	Aug 27, 2020
Instrument	213314

Lender

Name	ROBERT GALLUCCI 401(K) PSP & T
Address	3288 TEMPE DR, HUNTINGTON BEACH, CA 92649-1917

Agreement

Type	Conventional Mortgage
Amount	Amount on Record

August 2020: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	ALAMEDA CA
Recording Date	Aug 18, 2020
Property Address	21712 ADA ST, CASTRO VALLEY, CA 94546-6302
Document Number	0000201479
Instrument Date	Aug 12, 2020
Instrument	201479
Transaction Type	Transfer
Record Updated	Oct 12, 2020
Title Company	FIRST AMERICAN TITLE

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$528.00
Amount Accuracy	Full Value
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	164 ROBLES WAY #287 VALLEJO CA 945918039, 287, VALLEJO, CA 94591-8039
Investor	Possibly a Property Investor

Mortgage

Document Number	201480
Date	Aug 18, 2020
Instrument	201480

Lender

Name	KUNDAN VENTURES LLC
Address	833 PIEMONTE DR, PLEASANTON, CA 94566-2131

Agreement

Type	Conventional Mortgage
Amount	Amount on Record

Mortgage

Document Number	201481,
Date	Aug 18, 2020
Instrument	201481

Lender

Name	RATAN LLC
Address	PLEASANTON, CA 94566

Agreement

Amount	Amount on Record

August 2020: Affidavit of Death, Transfer

Document Type	Affidavit of Death
Jurisdiction	ALAMEDA CA
Recording Date	Aug 18, 2020
Property Address	21712 ADA ST, CASTRO VALLEY, CA 94546-6302
Document Number	0000201478
Instrument Date	Aug 12, 2020
Instrument	201478
Transaction Type	Transfer
Record Updated	Oct 7, 2020
Title Company	FIRST AMERICAN TITLE

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Living Trust
Address	21712 ADA ST CASTRO VALLEY CA 945466302, CASTRO VALLEY, CA 94546-6302

August 2020: Affidavit of Death, Transfer

Document Type	Affidavit of Death
Jurisdiction	ALAMEDA CA
Recording Date	Aug 18, 2020
Property Address	21712 ADA ST, CASTRO VALLEY, CA 94546-6302
Document Number	0000201477
Instrument Date	Jul 30, 2020
Instrument	201477
Transaction Type	Transfer
Record Updated	Oct 7, 2020
Title Company	FIRST AMERICAN TITLE

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	304 S IVY CT SPRINGFIELD TN 371723478, SPRINGFIELD, TN 37172-3478

Tax Assessment & Valuation

The 2025 property tax bill for 21712 Ada St was $9,732.

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		$750,760 (+2%) Land $225,228 Building $525,532
2025	$9,732.00	$736,044 Land $220,813 Building $515,231
2023	$9,326.00	$707,471 Land $212,241 Building $495,230	$674,100

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Flood

FEMA maps place 21712 Ada St in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.

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
Nearest Special Flood Hazard Area	Zone AE, within 500 ft
Flood Insurance Requirement	Not required lenders may require it
Flood Insurance Cost	Premium on File median of 15 policies
Community Rating System	Class 7 (15% premium discount)
Nearby Flood Policies	15 in force
Nearby Flood Claims	1 (1996)
Most Recent Claim	Dec 1996 · rainfall accumulation

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

The area around 21712 Ada St has no burnable land within ember reach, so its wildfire risk is not rated.

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 732 locations within half a mile, as of December 31, 2025

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

May also be available: GeoLinks, Sonic Telecom, Unwired.

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