Contra Costa County property record for 557 Byer Ct, San Ramon, CA 94582
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 4 ba · 2,704 sqft · built 2008 |
| Lot Size | 0.254 acres (11,044 sqft) |
| Owner | 2 Company Names on Record |
| Last Sale | $839,500 (Dec 2008) |
| Tax Bill | $16,971 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 223-640-009-5 |
| Primary APN | 223-640-009-5 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 4 Baths |
| Total Rooms | 12 Rooms |
| Stories | 2 Stories |
| Building Area | 2,704 sqft Living Area |
| 1st Floor Area | 1,209 sqft |
| 2nd Floor Area | 1,495 sqft |
| Year Built | Built 2008 |
|---|---|
| Effective Year Built | Effective 2008 |
| Lot Area | 11,044 sqft (0.254 acres) |
| Garage Type | Attached |
| Garage Area | 604 sqft |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 557 BYER CT |
|---|---|
| City | SAN RAMON |
| State | CA |
| Zip | 94582-5957 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T9020 L9 |
| Legal Tract | 9020 |
| Legal Lot Number | 9 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | TASSAJARA |
| Census Block Group | 2 |
| Census Block | 2001 |
| Census Tract | 355125 |
Source: Contra Costa County records, as of July 14, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Company Names on Record |
|---|---|
| Mailing Address | 557 BYER CT, SAN RAMON, CA 94582-5957 |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Dec 16, 2008 · Amount on Record |
| Deed Sale | Dec 16, 2008 · Amount on Record |
| Deed Document Number | 2008269075 |
| Last Transfer Date | Jun 18, 2016 |
| Transfer Doc | 0000142673 |
| Record Updated | Oct 29, 2026 |
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | San Ramon City |
| Unified School District | San Ramon Valley Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $1,110,999 (+2%) Land $499,128 Building $611,871 | |
| 2025 | $16,971.00 (+0.87%) | $1,089,216 (+4.04%) Land $489,342 Building $599,874 |
| 2023 | $16,824.00 (+1.99%) | $1,046,923 Land $470,342 Building $576,581 |
| 2022 | $16,495.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
Source: FEMA National Flood Hazard Layer, effective October 12, 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 62% of the US · lower than 62% of California |
|---|---|
| Wildfire Likelihood | 0.2% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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 | DUBLIN SAN RAMON SERVICES DISTRICT serves 98,776 people · EPA ID CA0110009 |
|---|---|
| Water Source | Purchased surface water from ZONE 7 WATER AGENCY |
| Last State Inspection | Sep 2024 |
| Lead | Under 1 ppb (2023–2025) 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.
Source: FCC Broadband Data Collection, based on 290 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| Etheric Networks Fixed Wireless | 250 / 100 |
May also be available: Verizon.
5G (outdoors only) and 4G LTE
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