Contra Costa County property record for 173 Sylvan Rd, Walnut Creek, CA 94596
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.5 ba · 3,000 sqft · built 1950 |
| Lot Size | 0.333 acres (14,500 sqft) |
| Owner | Trust Name on File |
| Tax Bill | $18,971 (2025) |
| Deeds & Mortgages | May 2024 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 182-072-010-8 |
| Primary APN | 182-072-010-8 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 8 Rooms |
| Stories | 1 Story |
| Building Area | 3,000 sqft Living Area |
| 1st Floor Area | 3,000 sqft |
| Year Built | Built 1950 |
|---|---|
| Effective Year Built | Effective 1970 |
| Lot Area | 14,500 sqft (0.333 acres) |
| Garage Type | Attached |
| Garage Area | 484 sqft |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 173 SYLVAN RD |
|---|---|
| City | WALNUT CREEK |
| State | CA |
| Zip | 94596-6035 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R20 |
| Legal Description | RANCHO HOMES 20 |
| Legal Subdivision | HOMES RHO |
| Legal Lot Number | 20 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1008 |
| Census Tract | 343003 |
173 Sylvan Rd is owner-occupied and held in a trust since March 2024.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 173 SYLVAN RD, WALNUT CREEK, CA 94596-6035 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | 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 | Name on Deed |
|---|---|
| Last Transfer Date | Mar 27, 2024 |
| Transfer Doc | 0000030197 |
| Record Updated | Sep 20, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | May 1, 2024 |
| Property Address | 173 SYLVAN RD, WALNUT CREEK, CA 94596-6035 |
| Document Number | 0000040623 |
| Map Reference | MB 38 PG 24 |
| Instrument Date | Mar 20, 2024 |
| Instrument | 2024-040623 |
| Transaction Type | Transfer |
| Record Updated | May 17, 2024 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 173 SYLVAN RD, WALNUT CREEK, CA 94596-6035 |
The 2025 property tax bill for 173 Sylvan Rd was $18,971 with a homeowner's exemption.
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 | $600,725 (-63.19%) Land $348,497 Building $252,228 | |
| 2025 | $18,971.00 Homeowner's exemption | $1,632,000 Land $1,122,000 Building $510,000 |
| 2023 | $2,549.00 (+2%) Homeowner's exemption | $170,250 Land $30,607 Building $139,643 |
| 2022 | $2,499.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 173 Sylvan Rd in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.
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 |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on File median of 25 policies |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 25 in force |
| Nearby Flood Claims | 6 (1982–2015) |
| Claims Outside the SFHA | 1 of 6 |
| Most Recent Claim | Feb 2015 · rainfall accumulation |
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 173 Sylvan Rd is moderate, ranking above 42% of the US, with a 0.06% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 42% of the US · lower than 75% of California |
|---|---|
| Wildfire Likelihood | 0.06% 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 420 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Sonic Telecom Fiber | 10,000 / 10,000 |
| AT&T Fiber · Fixed Wireless, DSL in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Astound Broadband Cable | 1,500 / 50 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Etheric Networks.
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