Contra Costa County property record for 9728 Thunderbird Dr, San Ramon, CA 94583
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 3,094 sqft · built 1977 |
| Lot Size | 0.231 acres (10,080 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $1,300,000 (Jul 2017) |
| Tax Bill | $16,862 (2025) |
| Deeds & Mortgages | Feb 2021 Mortgage Jun 2020 Transfer + 1 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 210-693-009-8 |
| Primary APN | 210-693-009-8 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 11 Rooms |
| Stories | 2 Stories |
| Building Area | 3,094 sqft Living Area |
| Gross Area | 3,709 sqft |
| 1st Floor Area | 1,540 sqft |
| 2nd Floor Area | 1,554 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1977 |
|---|---|
| Effective Year Built | Effective 1980 |
| Architectural Style | Raised Ranch |
| Exterior Material | Stucco |
| Construction Type | Frame |
| Roof Material | Wood Shingle |
| Lot Area | 10,080 sqft (0.231 acres) |
| Garage Type | Attached |
| Garage Area | 615 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 9728 THUNDERBIRD DR |
|---|---|
| City | SAN RAMON |
| State | CA |
| Zip | 94583-3622 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T04441 L0059 B EX MR |
| Legal Subdivision | SUBDIVISION 4441 |
| Legal Tract | 04441 |
| Legal Lot Number | 59 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2001 |
| Census Tract | 345103 |
9728 Thunderbird Dr is held in a trust since June 2020.
Source: Contra Costa County records, as of July 14, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 9728 THUNDERBIRD DR, SAN RAMON, CA 94583-3622 |
| Owner Type | Company |
| Vesting | Trust |
| Date | Document |
|---|---|
| Feb 16, 2021 | Deed of Trust, Mortgage · Conventional Mortgage KEY BANK NA |
| Jun 18, 2020 | Quit Claim Deed, Transfer NOT AVAILABLE |
| Jul 10, 2017 | Grant Deed, Transfer · Conventional Mortgage CAPITAL ONE NA |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jul 10, 2017 · Amount on File |
| Deed Sale | Jul 10, 2017 · Amount on File |
| Prior Sale | Apr 16, 1999 · Amount on File |
| Deed Document Number | 2017122595 |
| Last Transfer Date | Jun 10, 2020 |
| Transfer Doc | 0000118097 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 9728 THUNDERBIRD DR, SAN RAMON, CA 94583-3622 |
| Transaction Type | Mortgage |
| Record Updated | Nov 3, 2022 |
| Title Company | SERVICELINK |
| Name | Verified Name |
|---|---|
| Address | 9728 THUNDERBIRD DR, SAN RAMON, CA 94583-3622 |
| Document Number | 0000047069 |
|---|---|
| Date | Feb 16, 2021 |
| Instrument | 2021-047069 |
| Name | KEY BANK NA |
|---|---|
| Type | Bank |
| Address | CLEVELAND, OH 44114 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Mar 1, 2051 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Jun 18, 2020 |
| Property Address | 9728 THUNDERBIRD DR, SAN RAMON, CA 94583-3622 |
| Document Number | 0000118097 |
| Instrument Date | Jun 10, 2020 |
| Instrument | 118097 |
| Transaction Type | Transfer |
| Record Updated | Jun 25, 2020 |
| Title Company | NOT AVAILABLE |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Revocable Trust |
| Address | 9728 THUNDERBIRD DR SAN RAMON CA 945833622, SAN RAMON, CA 94583-3622 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Jul 10, 2017 |
| Property Address | 9728 THUNDERBIRD DR, SAN RAMON, CA 94583-3622 |
| Document Number | 0000122595 |
| Map Reference | MAP176 PG44-51 |
| Instrument Date | Jun 30, 2017 |
| Instrument | 2017-122595 |
| Transaction Type | Transfer |
| Record Updated | Nov 3, 2022 |
| Title Company | OLD REPUBLIC TITLE COMPANY |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $0.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property with Right of Survivorship |
| Address | 9728 THUNDERBIRD DR, SAN RAMON, CA 94583-3622 |
| Document Number | 0000122596 |
|---|---|
| Date | Jul 10, 2017 |
| Instrument | 2017-122596 |
| Name | CAPITAL ONE NA |
|---|---|
| Type | Bank |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Aug 1, 2047 |
The 2025 property tax bill for 9728 Thunderbird Dr was $16,862.
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 | $1,508,754 (+2%) Land $867,534 Building $641,220 | |
| 2025 | $16,862.00 | $1,479,172 Land $850,524 Building $628,648 |
| 2023 | $16,275.00 (+0.73%) | $1,421,737 Land $817,499 Building $604,238 |
| 2022 | $16,157.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 9728 Thunderbird Dr in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 2022.
Source: FEMA National Flood Hazard Layer, effective October 12, 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 |
| Flood Insurance Cost | Premium on File median of 10 policies |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 10 in force |
| Nearby Flood Claims | 1 (2022) |
| Most Recent Claim | Dec 2022 · Severe Winter Storms, Flooding, Landslides, And Mudslides |
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.
Wildfire risk around 9728 Thunderbird Dr is low, with less than a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 99.8% of the US · lower than 99.8% 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 350 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 2,000 |
| 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 · Fiber in parts of the area | 100 / 20 |
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