Alameda County property record for 4577 Sargent Ave, Castro Valley, CA 94546
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · 854 sqft · built 1948 |
| Lot Size | 0.171 acres (7,450 sqft) |
| Owner | Company Name on Record |
| Last Sale | $868,000 (May 2026) |
| Tax Bill | $2,065 (2025) |
| Deeds & Mortgages | May 2026 Sale May 2026 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 84C-697-4 |
| Primary APN | 84C-697-4 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 4 Rooms |
| Stories | 1 Story |
| Building Area | 854 sqft Living Area |
| Year Built | Built 1948 |
|---|---|
| Effective Year Built | Effective 1948 |
| Architectural Style | L-Shape |
| Exterior Material | Wood |
| Construction Type | Wood |
| Roof Material | Composition Shingle |
| Lot Area | 7,450 sqft (0.171 acres) |
| Garage Type | Attached |
| Heating System | Forced Air with A/C |
|---|---|
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 4577 SARGENT AVE |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-3651 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1 |
| Legal Description | LOT: 00004 BLK: AR: 084C PAGE: 0697 ;RANCHO: MISC |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 2 |
| Census Block | 2001 |
| Census Tract | 430800 |
Source: Alameda County records, as of October 13, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Company Name on Record |
|---|---|
| Mailing Address | 4577 SARGENT AVE, CASTRO VALLEY, CA 94546-3651 |
| Owner Type | Company |
| Vesting | Husband and Wife |
| Date | Document |
|---|---|
| May 21, 2026 | Affidavit, Transfer |
| May 21, 2026 | Grant Deed, Transfer · Conventional Mortgage NEW AMERICAN FUNDING |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | May 21, 2026 · Amount on Record |
| Deed Sale | May 21, 2026 · Amount on Record |
| Deed Document Number | 202667188 |
| Prior Transfer Date | May 14, 2026 |
| Prior Transfer Doc | 0000067187 |
| Record Updated | Oct 29, 2026 |
| Document Type | Affidavit |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | May 21, 2026 |
| Property Address | 4577 SARGENT AVE, CASTRO VALLEY, CA 94546-3651 |
| Document Number | 0000067187 |
| Instrument Date | May 14, 2026 |
| Instrument | 202667187 |
| Transaction Type | Transfer |
| Record Updated | Aug 29, 2026 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Full Amount Stated |
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 18797 VINEYARD RD, CASTRO VALLEY, CA 94546-2037 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | May 21, 2026 |
| Property Address | 4577 SARGENT AVE, CASTRO VALLEY, CA 94546-3651 |
| Document Number | 0000067188 |
| Instrument Date | May 14, 2026 |
| Instrument | 202667188 |
| Transaction Type | Transfer |
| Record Updated | Jul 6, 2026 |
| Title Company | CHICAGO TITLE W, CHICAGO TITLE |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $96,434.80 |
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 4577 SARGENT AVE, CASTRO VALLEY, CA 94546-3651 |
| Document Number | 0000067189, |
|---|---|
| Date | May 21, 2026 |
| Instrument | 202667189 |
| Name | NEW AMERICAN FUNDING |
|---|
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Jun 1, 2056 |
| Rate Type | Fixed Rate |
|---|---|
| Rate | 6.37% |
| Initial Type | Fixed Rate |
| Max Rate | -1% |
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 | $103,358 (+2%) Land $67,784 Building $35,574 | ||
| 2025 | $2,065.00 (+2.99%) | $101,331 (+4.04%) Land $66,454 Building $34,877 | |
| 2024 | $2,005.00 (+2.77%) | ||
| 2023 | $1,951.00 | $97,396 Land $63,874 Building $33,522 | $674,820 |
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 |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Claims | 1 (1997) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Nov 1997 · river or lake flooding |
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 | 0.01% annual chance |
| Exposure | None beyond 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 804 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 · Fixed Wireless in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Etheric Networks, GeoLinks.
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