Contra Costa County property record for 1670 Riviera Ave, Walnut Creek, CA 94596
| Property Type | Commercial Office |
|---|---|
| Details | 3 bd · 1 ba · 11,697 sqft · built 1991 |
| Lot Size | 0.242 acres (10,530 sqft) |
| Owner | Company Name on Record |
| Last Sale | $3,100,000 (Nov 2025) |
| Tax Bill | $34,250 (2025) |
| Deeds & Mortgages | Nov 2025 Sale & Line of Credit Apr 2019 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 174-140-017-8 |
| Primary APN | 174-140-017-8 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 11,697 sqft Gross Area |
| 1st Floor Area | 11,697 sqft |
| Year Built | Built 1991 |
|---|---|
| Effective Year Built | Effective 1992 |
| Lot Area | 10,530 sqft (0.242 acres) |
| Street Address | 1670 RIVIERA AVE |
|---|---|
| City | WALNUT CREEK |
| State | CA |
| Zip | 94596-7382 |
| Property Category | Commercial |
| Property Type | Commercial > Office > Commercial Office |
| Local Zoning Code | RM2 |
| Legal Description | PRINGLE ADDN LOT 25 BLK 4 |
| Legal Subdivision | PRINGLE ADD |
| Legal Block | 4 |
| Legal Lot Number | 25 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1007 |
| Census Tract | 339004 |
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 | 124 RIMINI CT, DANVILLE, CA 94506-2095 |
| Owner Type | Company |
| Vesting | Limited Liability Partnership |
| Date | Document |
|---|---|
| Nov 18, 2025 | Grant Deed, Transfer · Line of Credit FIRST CITIZENS BANK & TRUST CO |
| Apr 22, 2019 | Quit Claim Deed, Transfer NOT AVAILABLE |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Nov 18, 2025 · Amount on Record |
| Deed Sale | Nov 18, 2025 · Amount on Record |
| Prior Sale | Jul 16, 2002 · Amount on Record |
| Deed Document Number | 2025129711 |
| Prior Transfer Date | Nov 1, 2000 |
| Prior Transfer Doc | 0000276484 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Nov 18, 2025 |
| Property Address | 1670 RIVIERA AVE, WALNUT CREEK, CA 94596-7382 |
| Document Number | 0000129711 |
| Map Reference | MB 7 PG 154 |
| Instrument Date | Nov 14, 2025 |
| Instrument | 2025- 129711 |
| Transaction Type | Transfer |
| Record Updated | Dec 10, 2025 |
| Title Company | OLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $0.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 124 RIMINI CT, DANVILLE, CA 94506-2095 |
| Document Number | 0000129712 |
|---|---|
| Date | Nov 18, 2025 |
| Instrument | 2025- 129712 |
| Name | FIRST CITIZENS BANK & TRUST CO |
|---|---|
| Type | Bank |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Change Frequency | Monthly |
|---|
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Apr 22, 2019 |
| Property Address | 1670 RIVIERA AVE, WALNUT CREEK, CA 94596-7382 |
| Document Number | 0000055416 |
| Instrument Date | Apr 4, 2019 |
| Instrument | 55416 |
| Transaction Type | Transfer |
| Record Updated | May 1, 2019 |
| Title Company | NOT AVAILABLE |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Company |
| Address | 836 B SOUTHHAMPTON RD #302 BENICIA CA 94510, 302, BENICIA, CA 94510 |
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 | $3,100,000 (-10.27%) Land $1,050,000 Building $2,050,000 | |
| 2025 | $34,250.00 (-11.91%) | $3,455,000 (-17.08%) Land $607,700 Building $2,847,300 |
| 2023 | $38,880.00 (-15.81%) | $4,166,539 Land $732,930 Building $3,433,609 |
| 2022 | $46,182.00 |
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
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 97% of the US · lower than 97.8% of California |
|---|---|
| Wildfire Likelihood | Under 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 158 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable · Fiber in parts of the area | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| AT&T DSL · Fiber in parts of the area | 100 / 20 |
May also be available: Astound Broadband, Etheric Networks, Sonic Telecom, T-Mobile, Verizon.
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