Alameda County property record for 21475 Rizzo Ave, Castro Valley, CA 94546
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · 1,146 sqft · built 1942 |
| Lot Size | 0.228 acres (9,933 sqft) |
| Owner | Individual Name on Record |
| Last Sale | $955,000 (Jun 2024) |
| Tax Bill | $12,561 (2025) |
| Deeds & Mortgages | Jul 2026 Mortgage Jan 2024 Sale & Construction Loan |
| Flood Zone | Zone X (minimal risk) |
| APN | 415-60-71 |
| Primary APN | 415-60-71 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,146 sqft Living Area |
| Year Built | Built 1942 |
|---|---|
| Effective Year Built | Effective 1942 |
| Architectural Style | Custom Design |
| Construction Type | Wood |
| Lot Area | 9,933 sqft (0.228 acres) |
| Street Address | 21475 RIZZO AVE |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-6223 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00018 BLK: TR: 0635 |
| Legal Subdivision | 635 EDEN TOWNSHIP |
| Legal Tract | 0635 |
| Legal Block | 3 |
| Legal Lot Number | 18 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 3 |
| Census Block | 3006 |
| Census Tract | 431200 |
Source: Alameda County records, as of September 11, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Individual Name on Record |
|---|---|
| Mailing Address | 21475 RIZZO AVE, CASTRO VALLEY, CA 94546-6223 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Date | Document |
|---|---|
| Jul 31, 2026 | Deed of Trust, Mortgage · Conventional Mortgage THE TURNKEY FOUNDATION INC |
| Jan 23, 2024 | Grant Deed, Construction Loan · Construction Mortgage ANCHOR LOANS INC |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jun 5, 2024 · Amount on Record |
| Deed Sale | Jun 5, 2024 · Amount on Record |
| Prior Sale | Jan 23, 2024 · Amount on Record |
| Deed Document Number | 202469188 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Jul 31, 2026 |
| Property Address | 21475 RIZZO AVE, CASTRO VALLEY, CA 94546-6223 |
| Document Number | 0000099051 |
| Instrument Date | Jul 24, 2026 |
| Instrument | 202699051 |
| Transaction Type | Mortgage |
| Record Updated | Sep 11, 2026 |
| Title Company | NONE LISTED ON DOCUMENT |
| Name | Verified Name |
|---|---|
| Address | 21475 RIZZO AVE, CASTRO VALLEY, CA 94546-6223 |
| Document Number | 0000099051, |
|---|---|
| Date | Jul 31, 2026 |
| Instrument | 202699051 |
| Name | THE TURNKEY FOUNDATION INC |
|---|
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Aug 1, 2056 |
| Rate Type | Fixed Rate |
|---|---|
| Initial Type | Fixed Rate |
| Max Rate | -1% |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Jan 23, 2024 |
| Property Address | 21475 RIZZO AVE, CASTRO VALLEY, CA 94546-6223 |
| Document Number | 0000011717 |
| Map Reference | MB 8 PG 42 |
| Instrument Date | Jan 17, 2024 |
| Instrument | 2024011717 |
| Transaction Type | Construction Loan |
| Record Updated | Mar 4, 2024 |
| Title Company | OLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY |
| Amount | Amount Recorded |
|---|---|
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $605.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | PO BOX 9250, VALLEJO, CA 94591-9250 |
| Document Number | 0000011718 |
|---|---|
| Date | Jan 23, 2024 |
| Instrument | 2024011718 |
| Name | ANCHOR LOANS INC |
|---|---|
| Type | Mortgage Company |
| Type | Construction Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 13 Months |
| Due | Feb 1, 2025 |
Source: Alameda County assessment roll, as of August 5, 2026
| Type | Name |
|---|---|
| State | California |
| County | Alameda County |
| Unified School District | Hayward Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $993,581 (+2%) Land $298,074 Building $695,507 | ||
| 2025 | $12,561.00 (+304.41%) | $974,100 (+408.41%) Land $292,230 Building $681,870 | |
| 2023 | $3,106.00 Homeowner's exemption | $191,598 Land $57,479 Building $134,119 | $604,980 |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
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 31 policies |
| Community Rating System | Class 7 (15% premium discount) |
| Nearby Flood Policies | 31 in force |
| Nearby Flood Claims | 1 (2022) |
| Most Recent Claim | Dec 2022 · Severe Winter Storms, Flooding, Landslides, And Mudslides |
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.
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 744 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 |
| Verizon Fixed Wireless | 300 / 20 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: GeoLinks.
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