2143 174th Ave, Castro Valley, CA 94546 Property Records

Alameda County property record for 2143 174th Ave, Castro Valley, CA 94546

Property Summary

Property Type	Single Family Home
Details	4 bd · 2 ba · 1,914 sqft · built 1924
Lot Size	0.173 acres (7,540 sqft)
Owner	2 Individual Names on Record
Tax Bill	$3,450 (2025)
Flood Zone	Zone X (minimal risk)
APN	`80A-231-17-2`

Property Details

APN / Parcel Number

Primary APN	`80A-231-17-2`
Alternative APN	`080A-0231-017-02`

Interior

Bedrooms	4 Beds
Full Baths	2 Baths
Total Rooms	7 Rooms
Stories	2 Stories
Building Area	1,914 sqft Living Area

Exterior

Year Built	Built 1924
Effective Year Built	Effective 1940
Architectural Style	L-Shape
Exterior Material	Wood Siding
Construction Type	Wood
Roof Material	Composition Shingle
Lot Area	7,540 sqft (0.173 acres)

Utilities, Heating & Cooling

Heating System	Floor/Wall Furnace
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Street Address	2143 174TH AVE
City	CASTRO VALLEY
State	CA
Zip	94546-3813
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT: 00476 BLK: MP: 0008 PAGE: 0076 ;LOT: 00477 BLK: MP: 0008 PAGE: 0076
Legal Subdivision	EL PORTAL
Legal Lot Number	476
Jurisdiction	ALAMEDA CA
Township / Civil Division	HAYWARD
Census Block Group	3
Census Block	3017
Census Tract	430500

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	2143 174TH AVE, CASTRO VALLEY, CA 94546-3813
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Names on Deed
Record Updated	Sep 20, 2026

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	San Lorenzo Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$220,898 (-1.13%) Land $132,241 Building $95,657
2025	$3,450.00 (+4.17%) Homeowner's exemption	$223,430 (+4.04%) Land $129,648 Building $93,782
2023	$3,312.00 Homeowner's exemption	$214,756 Land $124,615 Building $90,141	$810,450

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

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it

Values are read at the parcel center point; 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 262 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

May also be available: Etheric Networks, GeoLinks, Sonic Telecom, T-Mobile, Unwired.