Contra Costa County property record for 10 Cobblestone Ct, San Ramon, CA 94583
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.5 ba · 2,108 sqft · built 1983 |
| Lot Size | 0.309 acres (13,468 sqft) |
| Owner | Company Name on Record |
| Last Sale | $1,075,000 (May 2016) |
| Tax Bill | $14,849 (2025) |
| Deeds & Mortgages | Apr 2020 Mortgage Apr 2021 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 209-581-009-5 |
| Primary APN | 209-581-009-5 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 8 Rooms |
| Stories | 2 Stories |
| Building Area | 2,108 sqft Living Area |
| 1st Floor Area | 1,340 sqft |
| 2nd Floor Area | 768 sqft |
| Year Built | Built 1983 |
|---|---|
| Effective Year Built | Effective 1993 |
| Lot Area | 13,468 sqft (0.309 acres) |
| Garage Type | Attached |
| Garage Area | 472 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|
| Street Address | 10 COBBLESTONE CT |
|---|---|
| City | SAN RAMON |
| State | CA |
| Zip | 94583-1754 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T05379 L0009 B |
| Legal Subdivision | SUBDIVISION 5379 |
| Legal Tract | 05379 |
| Legal Lot Number | 9 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1002 |
| Census Tract | 345206 |
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 | Company Name on Record |
|---|---|
| Mailing Address | 10 COBBLESTONE CT, SAN RAMON, CA 94583-1754 |
| Owner Type | Company |
| Vesting | Trust |
| Date | Document |
|---|---|
| Apr 14, 2020 | Deed of Trust, Mortgage · Conventional Mortgage JPMORGAN CHASE BANK NA |
| Apr 5, 2021 | Deed of Trust, Mortgage · Conventional Mortgage JPMORGAN CHASE BANK NA |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | May 31, 2016 · Amount on Record |
| Deed Sale | May 31, 2016 · Amount on Record |
| Prior Sale | Oct 5, 2015 · Amount on Record |
| Deed Document Number | 2016105123 |
| Last Transfer Date | Jun 17, 2016 |
| Transfer Doc | 0000125574 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 10 COBBLESTONE CT, SAN RAMON, CA 94583-1754 |
| Transaction Type | Mortgage |
| Record Updated | Nov 3, 2022 |
| Title Company | NORTH AMERICAN TITLE CO INC |
| Name | Verified Name |
|---|
| Document Number | 0000069703 |
|---|---|
| Date | Apr 14, 2020 |
| Instrument | 2020-069703 |
| Name | JPMORGAN CHASE BANK NA |
|---|---|
| Type | Bank |
| Address | COLUMBUS, OH 43240 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | May 1, 2050 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 10 COBBLESTONE CT, SAN RAMON, CA 94583-1754 |
| Transaction Type | Mortgage |
| Record Updated | Nov 3, 2022 |
| Title Company | AMROCK TITLE CALIFORNIA INC |
| Name | Verified Name |
|---|---|
| Address | 10 COBBLESTONE CT, SAN RAMON, CA 94583-1754 |
| Document Number | 0000101904 |
|---|---|
| Date | Apr 5, 2021 |
| Instrument | 2021-101904 |
| Name | JPMORGAN CHASE BANK NA |
|---|---|
| Type | Bank |
| Address | COLUMBUS, OH 43240 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Apr 1, 2051 |
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 | $1,298,024 (+2%) Land $905,601 Building $392,423 | |
| 2025 | $14,849.00 (+3.72%) | $1,272,574 (+4.04%) Land $887,845 Building $384,729 |
| 2023 | $14,316.00 (+0.75%) | $1,223,161 Land $853,370 Building $369,791 |
| 2022 | $14,209.00 |
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 | High above 84% of the US · above 64% of California |
|---|---|
| Wildfire Likelihood | 0.8% 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 160 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless · DSL | 100 / 20 |
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