Contra Costa County property record for 50 Sierra Ln, Walnut Creek, CA 94596
| Property Type | Townhouse |
|---|---|
| Details | 3 bd · 2 ba · 1,361 sqft · built 1972 |
| Lot Size | 0.031 acres (1,330 sqft) |
| Owner | Company Name on Record |
| Tax Bill | $2,264 (2025) |
| Flood Zone | Zone AE (high risk) |
| APN | 179-040-060-8 |
| Primary APN | 179-040-060-8 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 8 Rooms |
| Stories | 1 Story |
| Building Area | 1,361 sqft Living Area |
| 1st Floor Area | 1,361 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1972 |
|---|---|
| Effective Year Built | Effective 1973 |
| Architectural Style | Townhouse |
| Lot Area | 1,330 sqft (0.031 acres) |
| Lot Dimensions | 85 ft deep x 40 ft wide |
| Garage Type | Attached |
| Garage Area | 400 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Street Address | 50 SIERRA LN |
|---|---|
| City | WALNUT CREEK |
| State | CA |
| Zip | 94596-4910 |
| Property Category | Residential |
| Property Type | Residential > Condominium / Townhouse > Townhouse |
| Local Zoning Code | M4 |
| Legal Description | TRACT 4112 LOT 31 |
| Legal Subdivision | WALNUT EAST |
| Legal Tract | 4112 |
| Legal Lot Number | 31 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1018 |
| Census Tract | 343002 |
Source: Contra Costa County records, as of July 14, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Company Name on Record |
|---|---|
| Mailing Address | 553 MARBLEHEAD LN, WALNUT CREEK, CA 94598-3911 |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Name on Deed |
|---|---|
| Last Transfer Date | Mar 14, 2013 |
| Transfer Doc | 0000069361 |
| Record Updated | Sep 20, 2026 |
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Walnut Creek City |
| 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 | $99,964 (+2%) Land $32,479 Building $67,485 | |
| 2025 | $2,264.00 (+4.38%) | $98,005 (+4.04%) Land $31,843 Building $66,162 |
| 2023 | $2,169.00 (+1.5%) | $94,201 Land $30,607 Building $63,594 |
| 2022 | $2,137.00 |
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 AE high risk |
|---|---|
| 100-Year Floodplain | Yes 1% annual chance |
| Floodway | No |
| Base Flood Elevation | Varies along the reach; see FIRM |
| Flood Insurance Requirement | Required federally backed loans |
| Flood Insurance Cost | Premium on Record median of 45 policies |
| Community Rating System | Class 8 (10% premium discount) |
| Nearby Flood Policies | 45 in force |
| Nearby Flood Claims | 25 (1982–2023) |
| Claims Outside the SFHA | 1 of 25 |
| Most Recent Claim | Feb 2023 · Severe Winter Storms And Mudslides |
| 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.
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 433 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 / 2,000 |
| Astound Broadband Cable · Fiber in parts of the area | 1,500 / 50 |
| Unwired Fixed Wireless | 300 / 25 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL · Fiber, Fixed Wireless in parts of the area | 100 / 20 |
May also be available: Etheric Networks, Verizon.
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