Alameda County property record for 3909 Forest Cir, Castro Valley, CA 94546
| Property Type | Townhouse |
|---|---|
| Details | 3 bd · 3.5 ba · 1,577 sqft · built 2009 |
| Lot Size | 0.034 acres (1,500 sqft) |
| Owner | Individual Name on File |
| Last Sale | $350,000 (Dec 2009) |
| Tax Bill | $6,117 (2025) |
| Flood Zone | Zone X (moderate risk) |
| APN | 84C-1071-8 |
| Primary APN | 84C-1071-8 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 5 Rooms |
| Stories | 3 Stories |
| Building Area | 1,577 sqft Living Area |
| Year Built | Built 2009 |
|---|---|
| Effective Year Built | Effective 2009 |
| Architectural Style | Custom Design |
| Construction Type | Wood |
| Lot Area | 1,500 sqft (0.034 acres) |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 3909 FOREST CIR |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-4594 |
| Property Category | Residential |
| Property Type | Residential > Condominium / Townhouse > Townhouse |
| Legal Description | LOT: 00005 BLK: TR: 7709 |
| Legal Tract | 7709 |
| Legal Lot Number | 5 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 4 |
| Census Block | 4001 |
| Census Tract | 430800 |
Source: Alameda County assessment roll, 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 | Individual Name on File |
|---|---|
| Mailing Address | 3909 FOREST CIR, CASTRO VALLEY, CA 94546-4594 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Single Person |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Dec 31, 2009 · Amount on Record |
| Deed Sale | Dec 31, 2009 · Amount on Record |
| Deed Document Number | 2009400888 |
| Prior Transfer Date | Dec 28, 2009 |
| Prior Transfer Doc | 0000400889 |
| Record Updated | Sep 20, 2026 |
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 | $453,788 (+0.45%) Land $138,236 Building $322,552 | ||
| 2025 | $6,117.00 (+4.28%) Homeowner's exemption | $451,754 (+4.04%) Land $135,526 Building $316,228 | |
| 2023 | $5,866.00 Homeowner's exemption | $434,216 Land $130,265 Building $303,951 | $828,720 |
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 moderate risk |
|---|---|
| 500-Year Floodplain | Yes 0.2% annual chance |
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 7 (15% premium discount) |
| Nearby Flood Policies | 1 in force |
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 94% of the US · lower than 96% of California |
|---|---|
| Wildfire Likelihood | Under 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 777 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 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: GeoLinks.
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