Contra Costa County property record for 16 Adeline Dr, Walnut Creek, CA 94596
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 4.5 ba · 3,618 sqft · built 1964 |
| Lot Size | 0.771 acres (33,600 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $546,000 (Mar 1994) |
| Tax Bill | $11,490 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 180-100-013-2 |
| Primary APN | 180-100-013-2 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 4.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 13 Rooms |
| Stories | 2 Stories |
| Building Area | 3,618 sqft Living Area |
| 1st Floor Area | 2,818 sqft |
| 2nd Floor Area | 800 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1964 |
|---|---|
| Effective Year Built | Effective 1990 |
| Architectural Style | Contemporary |
| Exterior Material | Wood |
| Roof Material | Wood Shingle |
| Lot Area | 33,600 sqft (0.771 acres) |
| Lot Dimensions | 275 ft deep x 84 ft wide |
| Garage Type | Attached |
| Garage Area | 538 sqft |
| Parking Spaces | 2 Parking Spaces |
| Porch | Porch |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 16 ADELINE DR |
|---|---|
| City | WALNUT CREEK |
| State | CA |
| Zip | 94596-5402 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R20 |
| Legal Description | MASON MANOR LOT 4 |
| Legal Subdivision | MASON MANOR |
| Legal Lot Number | 4 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 4 |
| Census Block | 4005 |
| Census Tract | 343001 |
16 Adeline Dr is owner-occupied and held in a trust since August 2025.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 16 ADELINE DR, WALNUT CREEK, CA 94596-5402 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust, Family Trust |
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 | 2 Names on Deed |
|---|---|
| Last Sale | Mar 8, 1994 · Amount on File |
| Deed Sale | Mar 8, 1994 · Amount on File |
| Deed Document Number | 199464867 |
| Last Transfer Date | Aug 22, 2025 |
| Transfer Doc | 0000085805 |
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 16 Adeline Dr was $11,490.
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Secondary School District | Acalanes Union High School District (09 - 12) |
| Elementary School District | Walnut Creek Elementary School District (KG - 08) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $965,006 (+2%) Land $416,075 Building $548,931 | |
| 2025 | $11,490.00 Homeowner's exemption | $946,085 Land $407,917 Building $538,168 |
| 2023 | $11,061.00 (+2.23%) Homeowner's exemption | $909,349 Land $392,078 Building $517,271 |
| 2022 | $10,820.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 16 Adeline Dr in Zone X, an area of minimal flood risk.
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 8 (10% 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.
Wildfire risk around 16 Adeline Dr is low, with a 0.04% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 64% of the US · lower than 79% of California |
|---|---|
| Wildfire Likelihood | 0.04% 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 340 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Sonic Telecom Fiber | 10,000 / 10,000 |
| Xfinity Cable | 2,000 / 250 |
| Astound Broadband Cable | 1,500 / 50 |
| Unwired Fixed Wireless | 300 / 25 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: AT&T, Etheric Networks, Verizon.
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