Alameda County property record for 18690 Summit Ct, Castro Valley, CA 94546
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2.5 ba · 1,955 sqft · built 1955 |
| Lot Size | 0.209 acres (9,100 sqft) |
| Owner | Company Name on Record |
| Last Sale | $485,000 (Jun 2003) |
| Tax Bill | $9,157 (2025) |
| Deeds & Mortgages | Aug 2021 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 84C-869-2 |
| Primary APN | 84C-869-2 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 1,955 sqft Living Area |
| Gross Area | 418 sqft |
| Basement Area | 418 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1955 |
|---|---|
| Effective Year Built | Effective 1956 |
| Architectural Style | L-Shape |
| Exterior Material | Stucco |
| Construction Type | Wood |
| Roof Material | Tile |
| Lot Area | 9,100 sqft (0.209 acres) |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 18690 SUMMIT CT |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-2436 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1 |
| Legal Description | LOT: 00009 BLK: 0003 TR: 0863 ;LOT: 00010 BLK: 0003 TR: 0863 |
| Legal Tract | 0863 |
| Legal Lot Number | 10 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 4 |
| Census Block | 4000 |
| 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 | Company Name on Record |
|---|---|
| Mailing Address | 18690 SUMMIT CT, CASTRO VALLEY, CA 94546-2436 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jun 30, 2003 · Amount on Record |
| Deed Sale | Jun 30, 2003 · Amount on Record |
| Deed Document Number | 2003379741 |
| Last Transfer Date | Aug 10, 2021 |
| Transfer Doc | 0000280278 |
| Record Updated | Oct 29, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Aug 17, 2021 |
| Property Address | 18690 SUMMIT CT, CASTRO VALLEY, CA 94546-2436 |
| Document Number | 0000280279 |
| Map Reference | MB 31 PG 51 |
| Instrument Date | Aug 13, 2021 |
| Instrument | 2021280279 |
| Transaction Type | Transfer |
| Record Updated | Jun 7, 2023 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 18690 SUMMIT CT, CASTRO VALLEY, CA 94546-2436 |
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 | $716,421 (+2%) Land $214,926 Building $501,495 | ||
| 2025 | $9,157.00 (+2.28%) | $702,376 (+4.04%) Land $210,713 Building $491,663 | |
| 2024 | $8,953.00 (+1.63%) | ||
| 2023 | $8,809.00 | $675,110 Land $202,533 Building $472,577 | $1,128,960 |
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 |
|---|---|
| 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 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 724 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 |
| Verizon Fixed Wireless | 300 / 20 |
May also be available: Etheric Networks, GeoLinks, T-Mobile.
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