21199 Nunes Ave, Castro Valley, CA 94546 Property Records

Alameda County property record for 21199 Nunes Ave, Castro Valley, CA 94546

Property Summary

Property Type	Single Family Home
Details	4 bd · 2 ba · 1,519 sqft · built 1948
Lot Size	0.116 acres (5,050 sqft)
Owner	2 Individual Names on Record
Last Sale	$135,000 (Jul 2021)
Tax Bill	$7,788 (2025)
Deeds & Mortgages	Jul 2021 Sale & Mortgage Dec 2017 Line of Credit
Flood Zone	Zone X (minimal risk)
APN	`84A-20-10`

Property Details

APN / Parcel Number

Primary APN	`84A-20-10`
Alternative APN	`084A-0020-010-00`

Interior

Bedrooms	4 Beds
Full Baths	2 Baths
Total Rooms	8 Rooms
Stories	1 Story
Building Area	1,519 sqft Living Area

Exterior

Year Built	Built 1948
Effective Year Built	Effective 1948
Architectural Style	L-Shape
Construction Type	Wood
Lot Area	5,050 sqft (0.116 acres)
Parking Spaces	2 Parking Spaces

Location & Zoning

Street Address	21199 NUNES AVE
City	CASTRO VALLEY
State	CA
Zip	94546-5744
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT: 00003 BLK: 000A TR: 0810
Legal Tract	0810
Legal Block	A
Legal Lot Number	3
Jurisdiction	ALAMEDA CA
Township / Civil Division	HAYWARD
Census Block Group	2
Census Block	2006
Census Tract	431000

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	2 Individual Names on Record
Mailing Address	21199 NUNES AVE, CASTRO VALLEY, CA 94546-5744
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Jul 20, 2021	Grant Deed, Transfer · Conventional Mortgage QUICKEN LOANS LLC
Dec 6, 2017	Deed of Trust, Mortgage · Line of Credit FREMONT BK

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jul 20, 2021 · Amount on Record
Deed Sale	Jul 20, 2021 · Amount on Record
Prior Sale	Aug 10, 2015 · Amount on Record
Deed Document Number	2021252489
Prior Transfer Date	Jun 14, 2021
Prior Transfer Doc	0000252489
Record Updated	Oct 29, 2026

July 2021: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	ALAMEDA CA
Recording Date	Jul 20, 2021
Property Address	21199 NUNES AVE, CASTRO VALLEY, CA 94546-5744
Document Number	0000252489
Map Reference	MB 8 PG 82&83
Instrument Date	Jun 14, 2021
Instrument	2021252489
Transaction Type	Transfer
Record Updated	Aug 5, 2021
Title Company	CHICAGO TITLE COMPANY

Transaction

Amount	Amount Recorded
Tax	$148.50
Amount Accuracy	Partially Calculated from Transfer Tax

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	21199 NUNES AVE, CASTRO VALLEY, CA 94546-5744

Mortgage

Document Number	0000252490
Date	Jul 20, 2021
Instrument	2021252490

Lender

Name	QUICKEN LOANS LLC
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Aug 1, 2051

Interest

Rate Type	Adjustable Rate
Rate	2.37%
Type Change Date	Aug 1, 2028
Change Frequency	6 Months
Min Rate At Change	3%
Max Rate At Change	7.37%
Index	Other
Margin	3
Max Rate	7.37%

December 2017: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	ALAMEDA CA
Property Address	21199 NUNES AVE, CASTRO VALLEY, CA 94546-5744
Document Number	0000272669
Instrument Date	Dec 6, 2017
Transaction Type	Mortgage
Record Updated	Jan 5, 2018
Title Company	FIRST AMERICAN TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Separate Estate/Property
Address	21199 NUNES AVE CASTRO VALLEY CA 945465744, CASTRO VALLEY, CA 94546-5744

Mortgage

Document Number	0000272669
Date	Dec 12, 2017
Instrument	272669

Lender

Name	FREMONT BK
Type	Bank
Address	LIVERMORE, CA 94551

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	360 Months
Due	Dec 11, 2047

Interest

Rate Type	Adjustable Rate

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	Assessed Market Value
2026		$598,050 (+2%) Land $179,415 Building $418,635
2025	$7,788.00 (+2.31%)	$586,327 (+4.04%) Land $175,898 Building $410,429
2024	$7,612.00 (+1.7%)
2023	$7,485.00	$563,563 Land $169,069 Building $394,494	$851,040

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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