21151 Nunes Ave, Castro Valley, CA 94546 Property Records

Alameda County property record for 21151 Nunes Ave, Castro Valley, CA 94546

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 1,578 sqft · built 1948
Lot Size	0.116 acres (5,050 sqft)
Owner	2 Individual Names on Record
Last Sale	$783,000 (Aug 2017)
Tax Bill	$11,379 (2025)
Deeds & Mortgages	Jan 2022 Mortgage May 2021 Mortgage + 2 more
Flood Zone	Zone X (minimal risk)
APN	`84A-20-8`

Property Details

APN / Parcel Number

Primary APN	`84A-20-8`
Alternative APN	`084A-0020-008-00`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Total Rooms	7 Rooms
Stories	1 Story
Building Area	1,578 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1948
Effective Year Built	Effective 1958
Architectural Style	L-Shape
Construction Type	Wood
Lot Area	5,050 sqft (0.116 acres)
Lot Dimensions	100 ft deep x 50 ft wide
Parking Spaces	1 Parking Space

Utilities, Heating & Cooling

Heating System	Floor/Wall Furnace

Location & Zoning

Street Address	21151 NUNES AVE
City	CASTRO VALLEY
State	CA
Zip	94546-5744
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT: 00005 BLK: 000A TR: 0810
Legal Subdivision	TRACT 810
Legal Tract	0810
Legal Lot Number	5
Jurisdiction	ALAMEDA CA
Township / Civil Division	HAYWARD
Census Block Group	2
Census Block	2006
Census Tract	431000

Owner

Source: Alameda County records, as of May 4, 2026

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

Owner of Record	2 Individual Names on Record
Mailing Address	21151 NUNES AVE, CASTRO VALLEY, CA 94546-5744
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Jan 21, 2022	Deed of Trust, Mortgage · Conventional Mortgage ROCKET MORTGAGE LLC
May 3, 2021	Intrafamily Transfer, Transfer · Conventional Mortgage ACG FUNDING INC
Apr 8, 2019	Deed of Trust, Mortgage · Conventional Mortgage JPMORGAN CHASE BANK NA
Aug 21, 2017	Grant Deed, Transfer · ARM STERLING BANK & TRUST FSB

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Aug 21, 2017 · Amount on Record
Deed Sale	Aug 21, 2017 · Amount on Record
Prior Sale	Jun 17, 2011 · Amount on Record
Deed Document Number	2017182821
Last Transfer Date	Apr 23, 2021
Transfer Doc	0000170269
Record Updated	Sep 20, 2026

January 2022: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	ALAMEDA CA
Property Address	21151 NUNES AVE, CASTRO VALLEY, CA 94546-5744
Transaction Type	Mortgage
Record Updated	Feb 9, 2022
Title Company	CALIFORNIA BEST TITLE CO, CALIFORNIA BEST TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	21151 NUNES AVE, CASTRO VALLEY, CA 94546-5744

Mortgage

Document Number	0000014340
Date	Jan 21, 2022
Instrument	2022014340

Lender

Name	ROCKET MORTGAGE LLC
Type	Mortgage Company
Address	DETROIT, MI 48226

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Feb 1, 2052

May 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	ALAMEDA CA
Recording Date	May 3, 2021
Property Address	21151 NUNES AVE, CASTRO VALLEY, CA 94546-5744
Document Number	0000170269
Map Reference	MB 8 PG 82
Instrument Date	Apr 23, 2021
Instrument	2021170269
Transaction Type	Transfer
Record Updated	May 19, 2021
Title Company	FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE CO

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	21151 NUNES AVE, CASTRO VALLEY, CA 94546-5744

Mortgage

Document Number	0000170270
Date	May 3, 2021
Instrument	2021170270

Lender

Name	ACG FUNDING INC
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	May 1, 2051

April 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	ALAMEDA CA
Property Address	21151 NUNES AVE, CASTRO VALLEY, CA 94546-5744
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	AMROCK TITLE CALIFORNIA INC

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000061798
Date	Apr 8, 2019
Instrument	2019061798

Lender

Name	JPMORGAN CHASE BANK NA
Type	Bank
Address	COLUMBUS, OH 43240

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Apr 1, 2049

August 2017: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	ALAMEDA CA
Recording Date	Aug 21, 2017
Property Address	21151 NUNES AVE, CASTRO VALLEY, CA 94546-5744
Document Number	0000182821
Map Reference	MB8 PG82
Instrument Date	Aug 3, 2017
Instrument	2017182821
Transaction Type	Transfer
Record Updated	Aug 19, 2021
Title Company	FIRST AMERICAN TITLE COMPANY

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Calculated from Transfer Tax
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	21151 NUNES AVE, CASTRO VALLEY, CA 94546-5744

Mortgage

Document Number	0000182822
Date	Aug 21, 2017
Instrument	2017182822

Lender

Name	STERLING BANK & TRUST FSB
Type	Bank

Agreement

Type	ARM
Amount	Amount Recorded
Term	361 Months
Due	Sep 1, 2047

Interest

Rate Type	Adjustable Rate
Rate	5.5%
Type Change Date	Sep 1, 2022
Change Frequency	Annually
Min Rate At Change	3.95%
Max Rate At Change	10.5%
Index	1-Year LIBOR
Max Rate	10.5%

Tax Assessment & Valuation

Source: Alameda County assessment roll, as of June 20, 2025

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	Assessed Market Value
2025	$11,379.00 (+3.84%)	$890,677 (+4.04%) Land $267,385 Building $623,292
2023	$10,958.00	$856,093 Land $257,003 Building $599,090	$911,340

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

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
Nearest Special Flood Hazard Area	Zone AE, within 500 ft
Flood Insurance Requirement	Not required lenders may require it
Flood Insurance Cost	Premium on Record median of 10 policies
Community Rating System	Class 7 (15% premium discount)
Nearby Flood Policies	10 in force
Nearby Flood Claims	2 (2023–2025)
Most Recent Claim	Dec 2025 · 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

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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