Contra Costa County property record for 306 Diablo Rd, Danville, CA 94526
| Property Type | Commercial Office |
|---|---|
| Details | 820 sqft · built 1942 |
| Lot Size | 0.123 acres (5,357 sqft) |
| Owner | Company Name on File |
| Last Sale | $1,200,000 (Nov 2019) |
| Tax Bill | $15,214 (2025) |
| Deeds & Mortgages | Nov 2019 Mortgage Nov 2019 Mortgage + 2 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 196-210-048-1 |
| Primary APN | 196-210-048-1 |
|---|---|
| Alternative APN |
|
| Total Rooms | 1 Room |
|---|---|
| Stories | 1 Story |
| Building Area | 820 sqft Gross Area |
| 1st Floor Area | 820 sqft |
| Year Built | Built 1942 |
|---|---|
| Effective Year Built | Effective 2019 |
| Lot Area | 5,357 sqft (0.123 acres) |
| Street Address | 306 DIABLO RD |
|---|---|
| City | DANVILLE |
| State | CA |
| Zip | 94526-3417 |
| Property Category | Commercial |
| Property Type | Commercial > Office > Commercial Office |
| Legal Description | RO EL RIO #1 POR LOT C |
| Legal Subdivision | RANCHO EL RIO 1ST ADD |
| Legal Lot Number | C |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 3 |
| Census Block | 3002 |
| Census Tract | 345203 |
306 Diablo Rd, a commercial property, is owned by a company that bought it in November 2019.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 8 WESTWARD LN, DANVILLE, CA 94506-1931 |
| Owner Type | Company |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Date | Document |
|---|---|
| Nov 19, 2019 | Deed of Trust, Mortgage · Conventional Mortgage JP MORGAN CHASE BK |
| Nov 18, 2019 | Deed of Trust, Mortgage · Conventional Mortgage BAY AREA EMPLOYMENT DEV |
| Nov 14, 2019 | Grant Deed, Transfer · Commercial Mortgage JPMORGAN CHASE BANK NA |
| Jul 28, 2017 | Grant Deed, Transfer OLD REPUBLIC TITLE |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Nov 14, 2019 · Amount on File |
| Deed Sale | Nov 14, 2019 · Amount on File |
| Prior Sale | Jul 28, 2017 · Amount on File |
| Deed Document Number | 2019203140 |
| Prior Transfer Date | Oct 23, 1995 |
| Prior Transfer Doc | 0000194048 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 306 DIABLO RD, DANVILLE, CA 94526-3417 |
| Document Number | 0000220322 |
| Instrument Date | Nov 19, 2019 |
| Transaction Type | Mortgage |
| Record Updated | Dec 19, 2019 |
| Title Company | FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE CO |
| Name | Verified Name |
|---|---|
| Relationship | Company |
| Address | 306 DIABLO RD DANVILLE CA 945263417, DANVILLE, CA 94526-3417 |
| Document Number | 0000220322 |
|---|---|
| Date | Dec 9, 2019 |
| Instrument | 220322 |
| Name | JP MORGAN CHASE BK |
|---|---|
| Type | Bank |
| Address | SAN FRANCISCO, CA 94105 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 306 DIABLO RD, DANVILLE, CA 94526-3417 |
| Document Number | 0000220317 |
| Instrument Date | Nov 18, 2019 |
| Transaction Type | Mortgage |
| Record Updated | Dec 19, 2019 |
| Title Company | FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE CO |
| Name | Verified Name |
|---|---|
| Relationship | Company |
| Address | 167 OAKRIDGE DR DANVILLE CA 945063106, DANVILLE, CA 94506-3106 |
| Document Number | 0000220317 |
|---|---|
| Date | Dec 9, 2019 |
| Instrument | 220317 |
| Name | BAY AREA EMPLOYMENT DEV |
|---|---|
| Type | Construction/Development Company |
| Address | WALNUT CREEK, CA 94596 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Nov 14, 2019 |
| Property Address | 306 DIABLO RD, DANVILLE, CA 94526-3417 |
| Document Number | 0000203140 |
| Map Reference | MB 4 PG 78 |
| Instrument Date | Nov 1, 2019 |
| Instrument | 2019-203140 |
| Transaction Type | Transfer |
| Record Updated | Nov 3, 2022 |
| Title Company | FIDELITY NATIONAL TITLE CO |
| Amount | Amount on Record |
|---|---|
| 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 |
|---|
| Document Number | 0000203141 |
|---|---|
| Date | Nov 14, 2019 |
| Instrument | 2019-203141 |
| Name | JPMORGAN CHASE BANK NA |
|---|---|
| Type | Bank |
| Type | Commercial Mortgage |
|---|---|
| Amount | Amount on Record |
| Document Number | 0000203142 |
|---|---|
| Date | Nov 14, 2019 |
| Instrument | 2019-203142 |
| Name | JPMORGAN CHASE BANK NA |
|---|---|
| Type | Bank |
| Address | IRVINE, CA 92614 |
| Type | Commercial Mortgage |
|---|---|
| Amount | Amount on Record |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Jul 28, 2017 |
| Property Address | 306 DIABLO RD, DANVILLE, CA 94526-3417 |
| Document Number | 0000135203 |
| Instrument Date | Jul 25, 2017 |
| Instrument | 135203 |
| Transaction Type | Transfer |
| Record Updated | Aug 2, 2017 |
| Title Company | OLD REPUBLIC TITLE |
| Amount | Amount on Record |
|---|---|
| Tax | $880.00 |
| Amount Accuracy | Full Value |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Company |
| Address | 1280 BOULEVARD WAY #109 WALNUT CREEK CA 945951100, 109, WALNUT CREEK, CA 94595-1100 |
The 2025 property tax bill for 306 Diablo Rd was $15,214.
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Danville Town |
| Unified School District | San Ramon Valley Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $1,000,000 (-23.8%) Land $750,000 Building $250,000 | |
| 2025 | $15,214.00 | $1,312,373 Land $984,280 Building $328,093 |
| 2023 | $14,809.00 (+0.47%) | $1,261,413 Land $946,060 Building $315,353 |
| 2022 | $14,740.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 306 Diablo 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 A, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 5 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 306 Diablo Rd is low, with a 0.01% annual chance of wildfire.
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 398 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 2,000 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| AT&T Fixed Wireless · DSL · Fiber in parts of the area | 100 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
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