Alameda County property record for 1990 173rd Ave, Castro Valley, CA 94546
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1 ba · 1,264 sqft · built 1952 |
| Lot Size | 0.126 acres (5,500 sqft) |
| Owner | 2 Company Names on Record |
| Last Sale | $438,000 (Aug 2015) |
| Tax Bill | $7,058 (2025) |
| Deeds & Mortgages | Nov 2021 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 80A-237-1 |
| Primary APN | 80A-237-1 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,264 sqft Living Area |
| Year Built | Built 1952 |
|---|---|
| Effective Year Built | Effective 1952 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 5,500 sqft (0.126 acres) |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 1990 173RD AVE |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-3808 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00001 BLK: AR: 080A PAGE: 0237 |
| Legal Subdivision | EL PORTAL |
| Legal Lot Number | 403A |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 3 |
| Census Block | 3022 |
| Census Tract | 430500 |
Source: Alameda County records, as of August 26, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | 2 Company Names on Record |
|---|---|
| Mailing Address | 308 PENINSULA AVE, BURLINGAME, CA 94010-2951 |
| Owner Type | Company |
| Vesting | Trust, Family Trust |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Aug 28, 2015 · Amount on Record |
| Deed Sale | Aug 28, 2015 · Amount on Record |
| Prior Sale | Jul 30, 2007 · Amount on Record |
| Deed Document Number | 2015239399 |
| Last Transfer Date | Aug 27, 2021 |
| Transfer Doc | 0000358520 |
| Record Updated | Oct 29, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Nov 1, 2021 |
| Property Address | 1990 173RD AVE, CASTRO VALLEY, CA 94546-3808 |
| Document Number | 0000358520 |
| Map Reference | MB 10 PG 91 |
| Instrument Date | Aug 27, 2021 |
| Instrument | 2021358520 |
| Transaction Type | Transfer |
| Record Updated | Nov 23, 2021 |
| Title Company | BNT TITLE COMPANY/CA, BNT TITLE COMPANY OF CA |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants |
| Address | 308 PENINSULA AVE, BURLINGAME, CA 94010-2951 |
| Document Number | 0000358521 |
|---|---|
| Date | Nov 1, 2021 |
| Instrument | 2021358521 |
| Name | IMC MORTGAGE CORP |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Nov 1, 2051 |
Source: Alameda County assessment roll, as of August 5, 2026
| Type | Name |
|---|---|
| State | California |
| County | Alameda County |
| Unified School District | San Lorenzo Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $528,858 (+2%) Land $158,657 Building $370,201 | ||
| 2025 | $7,058.00 (+3.82%) | $518,490 (+4.04%) Land $155,547 Building $362,943 | |
| 2023 | $6,798.00 | $498,360 Land $149,508 Building $348,852 | $618,930 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
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.
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.
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 |
| 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.
Source: FCC Broadband Data Collection, based on 796 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 |
May also be available: Etheric Networks, GeoLinks, T-Mobile, Unwired, Verizon.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures