Contra Costa County property record for 121 Mavis Pl, San Ramon, CA 94583
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2 ba · 1,520 sqft · built 1977 |
| Lot Size | 0.168 acres (7,315 sqft) |
| Owner | Individual Name on File |
| Last Sale | $380,000 (Nov 2000) |
| Tax Bill | $5,373 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 212-282-025-7 |
| Primary APN | 212-282-025-7 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 9 Rooms |
| Stories | 1 Story |
| Building Area | 1,520 sqft Living Area |
| 1st Floor Area | 1,520 sqft |
| Year Built | Built 1977 |
|---|---|
| Effective Year Built | Effective 1993 |
| Lot Area | 7,315 sqft (0.168 acres) |
| Garage Type | Attached |
| Garage Area | 447 sqft |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 121 MAVIS PL |
|---|---|
| City | SAN RAMON |
| State | CA |
| Zip | 94583-2826 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | TRACT 4171 LOT 107 EX MR |
| Legal Subdivision | SUBDIVISION 4171 |
| Legal Tract | 4171 |
| Legal Lot Number | 107 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 3 |
| Census Block | 3000 |
| Census Tract | 345102 |
121 Mavis Pl is owned and occupied by an individual who bought it in November 2000.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 121 MAVIS PL, SAN RAMON, CA 94583-2826 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Nov 8, 2000 · Amount on File |
| Deed Sale | Nov 8, 2000 · Amount on File |
| Deed Document Number | 2000250149 |
| Prior Transfer Date | Feb 12, 1996 |
| Prior Transfer Doc | 0000067804 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 121 Mavis Pl was $5,373 with a veteran's exemption.
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 | $584,028 (+2%) Land $338,124 Building $245,904 | |
| 2025 | $5,373.00 Disabled Person's exemption Veteran's exemption | $572,578 Land $331,495 Building $241,083 |
| 2023 | $5,242.00 (-0.91%) Disabled Person's exemption Veteran's exemption | $550,346 Land $318,624 Building $231,722 |
| 2022 | $5,290.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 121 Mavis Pl in Zone X, an area of minimal flood risk.
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.
Wildfire risk around 121 Mavis Pl is low, with 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 80% of the US · lower than 88% of California |
|---|---|
| Wildfire Likelihood | 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 633 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 DSL | 100 / 20 |
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