Contra Costa County property record for 123 Nassau Ct, San Ramon, CA 94582
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.5 ba · 2,813 sqft · built 1987 |
| Lot Size | 0.197 acres (8,580 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $765,000 (Feb 2004) |
| Tax Bill | $12,547 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 212-501-033-6 |
| Primary APN | 212-501-033-6 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 10 Rooms |
| Stories | 2 Stories |
| Building Area | 2,813 sqft Living Area |
| 1st Floor Area | 1,488 sqft |
| 2nd Floor Area | 1,325 sqft |
| Year Built | Built 1987 |
|---|---|
| Effective Year Built | Effective 1987 |
| Architectural Style | Cluster |
| Lot Area | 8,580 sqft (0.197 acres) |
| Garage Type | Attached |
| Garage Area | 517 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|
| Street Address | 123 NASSAU CT |
|---|---|
| City | SAN RAMON |
| State | CA |
| Zip | 94582-4623 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T5902 L96 |
| Legal Tract | 5902 |
| Legal Lot Number | 96 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 4 |
| Census Block | 4022 |
| Census Tract | 345112 |
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 Individual Names on Record |
|---|---|
| Mailing Address | 123 NASSAU CT, SAN RAMON, CA 94582-4623 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Feb 11, 2004 · Amount on Record |
| Deed Sale | Feb 11, 2004 · Amount on Record |
| Deed Document Number | 200445206 |
| Prior Transfer Date | Nov 23, 1993 |
| Prior Transfer Doc | 0000340793 |
| 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 | $1,109,405 (+2%) Land $493,068 Building $616,337 | |
| 2025 | $12,547.00 (+3.66%) Homeowner's exemption | $1,087,652 (+4.04%) Land $483,400 Building $604,252 |
| 2023 | $12,104.00 (+0.74%) Homeowner's exemption | $1,045,419 Land $464,630 Building $580,789 |
| 2022 | $12,015.00 |
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 · 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 6 (20% 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 66% of the US · lower than 80% of California |
|---|---|
| Wildfire Likelihood | 0.05% annual chance |
| Exposure | Direct burnable vegetation |
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 509 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 DSL | 100 / 20 |
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