Contra Costa County property record for 2045 Mount Diablo St, Concord, CA 94520
| Property Type | Commercial Office |
|---|---|
| Details | 12,864 sqft · built 1915 |
| Lot Size | 0.185 acres (8,041 sqft) |
| Owner | Company Name on Record |
| Last Sale | $4,000,000 (Jan 2020) |
| Tax Bill | $52,183 (2025) |
| Deeds & Mortgages | Jan 2020 Mortgage Jan 2020 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 112-138-019-8 |
| Primary APN | 112-138-019-8 |
|---|---|
| Alternative APN |
|
| Total Rooms | 14 Rooms |
|---|---|
| Stories | 1 Story |
| Building Area | 12,864 sqft Gross Area |
| 1st Floor Area | 12,864 sqft |
| Year Built | Built 1915 |
|---|---|
| Effective Year Built | Effective 1962 |
| Exterior Material | Other |
| Construction Type | Frame |
| Roof Type | Flat |
| Lot Area | 8,041 sqft (0.185 acres) |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Street Address | 2045 MOUNT DIABLO ST |
|---|---|
| City | CONCORD |
| State | CA |
| Zip | 94520-2380 |
| Property Category | Commercial |
| Property Type | Commercial > Office > Commercial Office |
| Legal Description | TODAS SANTOS POR LOTS 11,12 & 13 BLK B |
| Legal Subdivision | TOWN TODOS SANDO |
| Legal Block | B |
| Legal Lot Number | 11 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1006 |
| Census Tract | 328000 |
Source: Contra Costa County records, as of October 9, 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 | 2045 MOUNT DIABLO ST, CONCORD, CA 94520-2380 |
| Owner Type | Company |
| Date | Document |
|---|---|
| Jan 22, 2020 | Deed of Trust, Mortgage UMPQUA BK |
| Jan 17, 2020 | Grant Deed, Transfer · Commercial Mortgage UMPQUA BANK |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jan 17, 2020 · Amount on Record |
| Deed Sale | Jan 17, 2020 · Amount on Record |
| Prior Sale | Feb 20, 2009 · Amount on Record |
| Deed Document Number | 202010548 |
| Prior Transfer Date | Feb 13, 2009 |
| Prior Transfer Doc | 0000044285 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 2045 MOUNT DIABLO ST, CONCORD, CA 94520-2380 |
| Document Number | 0000025905 |
| Instrument Date | Jan 22, 2020 |
| Transaction Type | Mortgage |
| Record Updated | Mar 9, 2020 |
| Title Company | CHICAGO TITLE COMPANY, CHICAGO TITLE CO |
| Name | Verified Name |
|---|---|
| Relationship | Company |
| Address | 2045 MOUNT DIABLO ST CONCORD CA 945202380, CONCORD, CA 94520-2380 |
| Document Number | 0000025905 |
|---|---|
| Date | Feb 11, 2020 |
| Instrument | 25905 |
| Name | UMPQUA BK |
|---|---|
| Type | Bank |
| Address | 225 W SANTA CLARA ST # 150, SAN JOSE, CA 95113-1771 |
| Amount | Amount Recorded |
|---|---|
| Term | 120 Months |
| Due | Feb 10, 2030 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Jan 17, 2020 |
| Property Address | 2045 MOUNT DIABLO ST, CONCORD, CA 94520-2380 |
| Document Number | 0000010548 |
| Map Reference | MB F PG 142 |
| Instrument Date | Nov 4, 2019 |
| Instrument | 2020-010548 |
| Transaction Type | Transfer |
| Record Updated | Nov 3, 2022 |
| Title Company | CHICAGO 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 | 2045 MOUNT DIABLO ST, CONCORD, CA 94520-2380 |
| Document Number | 0000010549 |
|---|---|
| Date | Jan 17, 2020 |
| Instrument | 2020-010549 |
| Name | UMPQUA BANK |
|---|---|
| Type | Bank |
| Type | Commercial Mortgage |
|---|---|
| Amount | Amount Recorded |
| Rate Type | Adjustable Rate |
|---|
| Document Number | 0000010557 |
|---|---|
| Date | Jan 17, 2020 |
| Instrument | 2020-010557 |
| Name | CAPITAL ACCESS GROUP INC |
|---|---|
| Type | Non-Lending Institution |
| Address | SAN FRANCISCO, CA 94111 |
| Type | Commercial Mortgage |
|---|---|
| Amount | Amount Recorded |
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Concord City |
| Unified School District | Mount Diablo Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $3,803,800 (+2%) Land $976,076 Building $2,827,724 | |
| 2025 | $52,183.00 (+5.39%) | $3,729,217 (+4.04%) Land $956,938 Building $2,772,279 |
| 2023 | $49,516.00 (+1.82%) | $3,584,409 Land $919,780 Building $2,664,629 |
| 2022 | $48,632.00 |
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 | Not rated no burnable land within 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 | CONTRA COSTA WATER DISTRICT serves 210,500 people · EPA ID CA0710003 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Jan 2022 |
| Lead | Under 1 ppb (2026–2028) 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.
Source: FCC Broadband Data Collection, based on 344 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 / 250 |
| Astound Broadband Cable · Fiber in parts of the area | 1,500 / 50 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL · Fiber, Fixed Wireless in parts of the area | 100 / 20 |
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