Alameda County property record for 18786 Madison Ave, Castro Valley, CA 94546
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 1,784 sqft · built 1953 |
| Lot Size | 0.122 acres (5,300 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $808,000 (Jan 2017) |
| Tax Bill | $11,934 (2025) |
| Deeds & Mortgages | Aug 2020 Mortgage Jan 2017 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 84C-796-39 |
| Primary APN | 84C-796-39 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 7 Rooms |
| Stories | 2 Stories |
| Building Area | 1,784 sqft Living Area |
| Year Built | Built 1953 |
|---|---|
| Effective Year Built | Effective 1975 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 5,300 sqft (0.122 acres) |
| Street Address | 18786 MADISON AVE |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-2553 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00005 BLK: 000B TR: 1270 |
| Legal Subdivision | TRACT 1270 |
| Legal Tract | 1270 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 2 |
| Census Block | 2003 |
| Census Tract | 430200 |
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 | 18687 MADISON AVE, CASTRO VALLEY, CA 94546-2541 |
| Owner Type | Individual |
| Vesting | Community Property |
| Date | Document |
|---|---|
| Aug 5, 2020 | Deed of Trust, Mortgage · Conventional Mortgage UNITED WHOLESALE MORTGAGE |
| Jan 26, 2017 | Grant Deed, Transfer · Conventional Mortgage QUICKEN LNS |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jan 26, 2017 · Amount on Record |
| Deed Sale | Jan 26, 2017 · Amount on Record |
| Prior Sale | Oct 12, 2016 · Amount on Record |
| Deed Document Number | 201720209 |
| Prior Transfer Date | Sep 28, 2016 |
| Prior Transfer Doc | 0000263812 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Property Address | 18786 MADISON AVE, CASTRO VALLEY, CA 94546-2553 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Title Company | FATCO |
| Name | Verified Name |
|---|---|
| Address | 18786 MADISON AVE, CASTRO VALLEY, CA 94546-2553 |
| Document Number | 0000188645 |
|---|---|
| Date | Aug 5, 2020 |
| Instrument | 2020188645 |
| Name | UNITED WHOLESALE MORTGAGE |
|---|---|
| Type | Mortgage Company |
| Address | PONTIAC, MI 48341 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Aug 1, 2050 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Jan 26, 2017 |
| Property Address | 18786 MADISON AVE, CASTRO VALLEY, CA 94546-2553 |
| Document Number | 0000020209 |
| Instrument Date | Jan 19, 2017 |
| Instrument | 20209 |
| Transaction Type | Transfer |
| Record Updated | Feb 14, 2017 |
| Title Company | OLD REPUBLIC TITLE |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $888.80 |
| Amount Accuracy | Full Value |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property |
| Address | 18687 MADISON AVE CASTRO VALLEY CA 94546, CASTRO VALLEY, CA 94546 |
| Document Number | 20210 |
|---|---|
| Date | Jan 26, 2017 |
| Instrument | 20210 |
| Name | QUICKEN LNS |
|---|---|
| Type | Funding / Finance Company |
| Address | DETROIT, MI 48226-1906 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Jan 25, 2047 |
Source: Alameda County assessment roll, as of August 5, 2026
| Type | Name |
|---|---|
| State | California |
| County | Alameda County |
| Unified School District | Castro Valley Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $956,485 (+2%) Land $286,945 Building $669,540 | ||
| 2025 | $11,934.00 (+3.83%) | $937,731 (+4.04%) Land $281,319 Building $656,412 | |
| 2023 | $11,494.00 | $901,323 Land $270,397 Building $630,926 | $1,085,670 |
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 · 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 |
| Nearby Flood Claims | 1 (1998) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Feb 1998 · rainfall accumulation |
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 | Low lower than 80% of the US · lower than 88% of California |
|---|---|
| Wildfire Likelihood | 0.02% annual chance |
| Exposure | Indirect 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 412 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 · 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, T-Mobile.
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