Alameda County property record for 2130 173rd Ave, Castro Valley, CA 94546
| Property Type | Triplex |
|---|---|
| Details | 4 bd · 2 ba · 1,752 sqft · built 1945 |
| Lot Size | 0.143 acres (6,233 sqft) |
| Owner | Individual Name on File |
| Last Sale | $850,000 (Dec 2023) |
| Tax Bill | $12,331 (2025) |
| Deeds & Mortgages | Dec 2023 Sale & Mortgage Jun 2021 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 80A-231-7 |
| Primary APN | 80A-231-7 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Units | 2 Units |
| Building Area | 1,752 sqft Living Area |
| Gross Area | 357 sqft |
| Basement Area | 357 sqft |
| Finished Basement | 357 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1945 |
|---|---|
| Effective Year Built | Effective 1945 |
| Architectural Style | Custom Design |
| Exterior Material | Stucco |
| Construction Type | Wood |
| Roof Material | Composition Shingle |
| Lot Area | 6,233 sqft (0.143 acres) |
| View / Lot | Bay |
| Parking Spaces | 2 Parking Spaces |
| Heating System | Forced Air with A/C |
|---|---|
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 2130 173RD AVE |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-3812 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Triplex |
| Local Zoning Code | R1CSURV |
| Legal Description | LOT: 00007 BLK: AR: 080A PAGE: 0231 |
| Legal Subdivision | EL PORTAL |
| Legal Lot Number | 463 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 3 |
| Census Block | 3017 |
| Census Tract | 430500 |
2130 173rd Ave, a triplex, is owned and occupied by an individual who bought it in December 2023.
Source: Alameda County records, as of August 5, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 2130 173RD AVE, CASTRO VALLEY, CA 94546-3812 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Date | Document |
|---|---|
| Dec 8, 2023 | Grant Deed, Transfer · Conventional Mortgage VELLUM MORTGAGE LLC |
| Jun 16, 2021 | Deed of Trust, Mortgage · Conventional Mortgage UNITED WHOLESALE MORTGAGE |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Dec 8, 2023 · Amount on File |
| Deed Sale | Dec 8, 2023 · Amount on File |
| Prior Sale | Nov 22, 2006 · Amount on File |
| Deed Document Number | 2023143867 |
| Prior Transfer Date | Nov 13, 1999 |
| Prior Transfer Doc | 0000433431 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Dec 8, 2023 |
| Property Address | 2130 173RD AVE, CASTRO VALLEY, CA 94546-3812 |
| Document Number | 0000143867 |
| Map Reference | MB 8 PG 76&77 |
| Instrument Date | Dec 5, 2023 |
| Instrument | 2023143867 |
| Transaction Type | Transfer |
| Record Updated | Feb 6, 2024 |
| Title Company | CHICAGO TITLE COMPANY |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $935.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 2130 173RD AVE, CASTRO VALLEY, CA 94546-3812 |
| Document Number | 0000143868 |
|---|---|
| Date | Dec 8, 2023 |
| Instrument | 2023143868 |
| Name | VELLUM MORTGAGE LLC |
|---|---|
| Type | Mortgage Company |
| Address | FAIRFAX, VA 22033 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Jan 1, 2054 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Property Address | 2130 173RD AVE, CASTRO VALLEY, CA 94546-3812 |
| Transaction Type | Mortgage |
| Record Updated | Jul 5, 2021 |
| Title Company | ORABGE COAST TITLE, ORANGE COAST TITLE |
| Name | Verified Name |
|---|---|
| Address | 2130 173RD AVE, CASTRO VALLEY, CA 94546-3812 |
| Document Number | 0000217320 |
|---|---|
| Date | Jun 16, 2021 |
| Instrument | 2021217320 |
| Name | UNITED WHOLESALE MORTGAGE |
|---|---|
| Type | Mortgage Company |
| Address | PONTIAC, MI 48341 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Jul 1, 2051 |
The 2025 property tax bill for 2130 173rd Ave was $12,331, up 3.9% from the year before.
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 |
|---|---|---|
| 2026 | $992,340 (+14.46%) Land $265,302 Building $727,038 | |
| 2025 | $12,331.00 (+3.92%) | $867,000 Land $260,100 Building $606,900 |
| 2024 | $11,866.00 (-1.72%) | |
| 2023 | $12,074.00 Homeowner's exemption | $871,751 Land $261,525 Building $610,226 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 2130 173rd Ave in Zone X, an area of minimal flood risk.
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.
The area around 2130 173rd Ave has no burnable land within ember reach, so its wildfire risk is not rated.
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.
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