Contra Costa County property record for 20 Ardith Ln, Alamo, CA 94507
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · 850 sqft · built 1951 |
| Lot Size | 0.27 acres (11,761 sqft) |
| Owner | Company Name on File |
| Last Sale | $500,000 (Apr 2009) |
| Tax Bill | $7,722 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 198-030-007-1 |
| Primary APN | 198-030-007-1 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 4 Rooms |
| Stories | 1 Story |
| Building Area | 850 sqft Living Area |
| 1st Floor Area | 850 sqft |
| Year Built | Built 1951 |
|---|---|
| Effective Year Built | Effective 2000 |
| Lot Area | 11,761 sqft (0.27 acres) |
| Garage Type | Attached |
| Garage Area | 849 sqft |
| Parking Spaces | 3 Parking Spaces |
| Street Address | 20 ARDITH LN |
|---|---|
| City | ALAMO |
| State | CA |
| Zip | 94507-1806 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R20 |
| Legal Description | POR RO SAN RAMON |
| Legal Subdivision | SAN RAMON RHO |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1005 |
| Census Tract | 345204 |
20 Ardith Ln is owned by a company that bought it in April 2009.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 2434 ROUNDHILL DR, ALAMO, CA 94507-2219 |
| Owner Type | Company |
| Vesting | Company |
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 | Apr 8, 2009 · Amount on File |
| Deed Sale | Apr 8, 2009 · Amount on File |
| Deed Document Number | 200975038 |
| Prior Transfer Date | Mar 21, 2000 |
| Prior Transfer Doc | 0000087318 |
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 20 Ardith Ln was $7,722.
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Unified School District | San Ramon Valley Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $630,471 (+2%) Land $525,399 Building $105,072 | |
| 2025 | $7,722.00 | $618,110 Land $515,098 Building $103,012 |
| 2023 | $7,438.00 (+0.74%) | $594,111 Land $495,098 Building $99,013 |
| 2022 | $7,383.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 20 Ardith Ln in Zone X, an area of minimal flood risk, though there have been 8 flood claims nearby since 1982.
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 | 9 in force |
| Nearby Flood Claims | 8 (1982–2023) |
| Claims Outside the SFHA | 3 of 8 |
| Most Recent Claim | Apr 2023 · rainfall accumulation |
| Claims by Event |
|
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 20 Ardith Ln is moderate, ranking above 61% of the US, with a 0.2% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 61% of the US · lower than 63% of California |
|---|---|
| Wildfire Likelihood | 0.2% 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 192 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 |
| AT&T DSL · Fiber in parts of the area | 100 / 20 |
May also be available: T-Mobile.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures