Contra Costa County property record for 320 Muller Rd, Walnut Creek, CA 94598
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 3.5 ba · 2,751 sqft · built 1947 |
| Lot Size | 0.59 acres (25,700 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $884,000 (May 2013) |
| Tax Bill | $16,252 (2025) |
| Deeds & Mortgages | Jun 2021 Transfer Jun 2021 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 179-171-014-6 |
| Primary APN | 179-171-014-6 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 10 Rooms |
| Stories | 1 Story |
| Building Area | 2,751 sqft Living Area |
| Gross Area | 3,171 sqft |
| 1st Floor Area | 1,895 sqft |
| Basement Area | 856 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1947 |
|---|---|
| Effective Year Built | Effective 2005 |
| Architectural Style | Ranch |
| Exterior Material | Wood Siding |
| Construction Type | Frame |
| Roof Material | Wood Shingle |
| Lot Area | 25,700 sqft (0.59 acres) |
| Garage Type | Attached |
| Garage Area | 420 sqft |
| Parking Spaces | 2 Parking Spaces |
| Heating System | Gravity Furnace |
|---|---|
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 320 MULLER RD |
|---|---|
| City | WALNUT CREEK |
| State | CA |
| Zip | 94598-4816 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R120 |
| Legal Description | CCCC LAND CO POR LOT A |
| Legal Subdivision | SAN MIGUEL RHO |
| Legal Lot Number | A |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1002 |
| Census Tract | 343002 |
Source: Contra Costa County records · APN 179-171-014-6
Assessment roll updated July 14, 2026 · Last verified July 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 320 MULLER RD, WALNUT CREEK, CA 94598-4816 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Date | Document |
|---|---|
| Jun 24, 2021 | Intrafamily Transfer, Transfer |
| Jun 24, 2021 | Intrafamily Transfer, Transfer |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | May 20, 2013 · Amount on Record |
| Deed Sale | May 20, 2013 · Amount on Record |
| Deed Document Number | 2013127386 |
| Last Transfer Date | Apr 23, 2021 |
| Transfer Doc | 0000181981 |
| Record Updated | Sep 20, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Jun 24, 2021 |
| Property Address | 320 MULLER RD, WALNUT CREEK, CA 94598-4816 |
| Document Number | 0000181980 |
| Instrument Date | Apr 23, 2021 |
| Instrument | 2021-181980 |
| Transaction Type | Transfer |
| Record Updated | Nov 03, 2022 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property with Right of Survivorship |
| Address | 320 MULLER RD, WALNUT CREEK, CA 94598-4816 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Jun 24, 2021 |
| Property Address | 320 MULLER RD, WALNUT CREEK, CA 94598-4816 |
| Document Number | 0000181981 |
| Instrument Date | Apr 23, 2021 |
| Instrument | 2021-181981 |
| Transaction Type | Transfer |
| Record Updated | Jun 07, 2023 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Family Trust |
| Address | 320 MULLER RD, WALNUT CREEK, CA 94598-4816 |
Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 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) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $1,401,125 (+2%) Land $753,629 Building $647,496 | |
| 2025 | $16,252.00 (+3.82%) | $1,373,652 (+4.04%) Land $738,852 Building $634,800 |
| 2023 | $15,654.00 (+2.27%) | $1,320,312 Land $710,162 Building $610,150 |
| 2022 | $15,307.00 |
Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), as of October 12, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060133430021, as of September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition, as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| 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 |
|
| Wildfire Risk | Low lower than 65% of the US · lower than 79% of California |
|---|---|
| Wildfire Likelihood | 0.04% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026
| Provider | Max Down / Up (Mbps) |
|---|---|
| Sonic Telecom Fiber | 10,000 / 10,000 |
| AT&T Fiber · DSL | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Radiate Holdings Cable · Fiber in parts of the area | 1,500 / 50 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile USA Fixed Wireless | 100 / 20 |
May also be available: Etheric Communications, LLC..
Based on FCC filings for 480 locations within half a mile of this property.
Source: EPA Safe Drinking Water Information System, water system CA0110005, as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026
| Water System | EAST BAY MUD serves 1,468,000 people |
|---|---|
| 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 as reported to EPA, 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. The full violation and enforcement history is in the system's EPA record.
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