18803 Crest Ave, Castro Valley, CA 94546 Property Records

Alameda County property record for 18803 Crest Ave, Castro Valley, CA 94546

Property Summary

Property Type	Single Family Home
Details	2 bd · 1 ba · 1,004 sqft · built 1949
Lot Size	0.129 acres (5,623 sqft)
Owner	2 Individual Names on File
Last Sale	$605,000 (Aug 2017)
Tax Bill	$8,895 (2025)
Deeds & Mortgages	Dec 2019 Mortgage Aug 2020 Mortgage + 2 more
Flood Zone	Zone X (minimal risk)
APN	`84B-360-1`

Property Details

APN / Parcel Number

Primary APN	`84B-360-1`
Alternative APN	`084B-0360-001-00`

Interior

Bedrooms	2 Beds
Full Baths	1 Bath
Total Rooms	5 Rooms
Stories	1 Story
Building Area	1,004 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1949
Effective Year Built	Effective 1949
Architectural Style	L-Shape
Exterior Material	Wood
Construction Type	Wood
Roof Material	Tar & Gravel
Lot Area	5,623 sqft (0.129 acres)

Utilities, Heating & Cooling

Heating System	Floor/Wall Furnace
Heating Fuel	Gas
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Street Address	18803 CREST AVE
City	CASTRO VALLEY
State	CA
Zip	94546-2733
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT: 00001 BLK: AR: 084B PAGE: 0360
Legal Subdivision	VALLEY CREST GARDENS
Legal Lot Number	34
Jurisdiction	ALAMEDA CA
Township / Civil Division	HAYWARD
Census Block Group	1
Census Block	1015
Census Tract	430500

Owner

18803 Crest Ave is owned and occupied by two individuals who bought it in August 2017.

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

Owner of Record	2 Individual Names on File
Mailing Address	18803 CREST AVE, CASTRO VALLEY, CA 94546-2733
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

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 24, 2019	Deed of Trust, Mortgage · Conventional Mortgage UNITED WHOLESALE MORTGAGE
Aug 4, 2020	Deed of Trust, Mortgage · Conventional Mortgage QUICKEN LOANS LLC
Aug 11, 2017	Affidavit of Death, Transfer OLD REPUBLIC TITLE
Aug 11, 2017	Grant Deed, Transfer · Conventional Mortgage GENERAL MORTGAGE CAPITAL CORP

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Aug 11, 2017 · Amount on File
Deed Sale	Aug 11, 2017 · Amount on File
Deed Document Number	2017176217
Record Updated	Oct 29, 2026

December 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	ALAMEDA CA
Property Address	18803 CREST AVE, CASTRO VALLEY, CA 94546-2733
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	TIMIOS TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000265210
Date	Dec 24, 2019
Instrument	2019265210

Lender

Name	UNITED WHOLESALE MORTGAGE
Type	Mortgage Company
Address	PONTIAC, MI 48341

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Jan 1, 2050

August 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	ALAMEDA CA
Property Address	18803 CREST AVE, CASTRO VALLEY, CA 94546-2733
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	FIDELITY NATIONAL TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	18803 CREST AVE, CASTRO VALLEY, CA 94546-2733

Mortgage

Document Number	0000187078
Date	Aug 4, 2020
Instrument	2020187078

Lender

Name	QUICKEN LOANS LLC
Type	Mortgage Company
Address	DETROIT, MI 48226

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	348 Months
Due	Aug 1, 2049

August 2017: Affidavit of Death, Transfer

Document Type	Affidavit of Death
Jurisdiction	ALAMEDA CA
Recording Date	Aug 11, 2017
Property Address	18803 CREST AVE, CASTRO VALLEY, CA 94546-2733
Document Number	0000176216
Instrument Date	Aug 4, 2017
Instrument	176216
Transaction Type	Transfer
Record Updated	Sep 4, 2017
Title Company	OLD REPUBLIC TITLE

Transaction

Tax	$0.00
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	3421 CORNERSTONE CT PLEASANTON CA 945663589, PLEASANTON, CA 94566-3589

August 2017: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	ALAMEDA CA
Recording Date	Aug 11, 2017
Property Address	18803 CREST AVE, CASTRO VALLEY, CA 94546-2733
Document Number	0000176217
Map Reference	MAP24 PG92
Instrument Date	Aug 4, 2017
Instrument	2017176217
Transaction Type	Transfer
Record Updated	Aug 19, 2021
Title Company	OLD REPUBLIC TITLE COMPANY

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	1622 36TH AVE, OAKLAND, CA 94601-3618

Mortgage

Document Number	0000176218
Date	Aug 11, 2017
Instrument	2017176218

Lender

Name	GENERAL MORTGAGE CAPITAL CORP
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Sep 1, 2047

Tax Assessment & Valuation

The 2025 property tax bill for 18803 Crest Ave was $8,895.

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		$702,138 (+2%) Land $210,641 Building $491,497
2025	$8,895.00	$688,374 Land $206,512 Building $481,862
2023	$8,582.00	$661,645 Land $198,493 Building $463,152	$744,930

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

Flood

FEMA maps place 18803 Crest Ave in Zone X, an area of minimal flood risk, though there have been 2 flood claims nearby since 1978.

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
Flood Insurance Requirement	Not required lenders may require it
Nearby Flood Claims	2 (1978)
Most Recent Claim	Jan 1978 · tidal / storm surge

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

Wildfire risk around 18803 Crest Ave is low, with a 0.02% annual chance of wildfire.

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

Wildfire Risk	Low lower than 66% of the US · lower than 80% of California
Wildfire Likelihood	0.02% annual chance
Exposure	None beyond 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 522 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
AT&T Fiber · DSL in parts of the area	5,000 / 5,000
Xfinity Cable	2,000 / 250

May also be available: Etheric Networks, T-Mobile, Unwired, Verizon.

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