Contra Costa County property record for 2520 Stanwell Dr, Concord, CA 94520
| Property Type | Commercial Office |
|---|---|
| Details | 6,996 sqft · built 1978 |
| Lot Size | 1.8 acres (78,408 sqft) |
| Owner | 2 Company Names on Record |
| Last Sale | $3,435,000 (Apr 2026) |
| Tax Bill | $43,442 (2025) |
| Deeds & Mortgages | Apr 2026 Sale & Mortgage Mar 2020 Sale & Mortgage + 1 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 112-260-021-4 |
| Primary APN | 112-260-021-4 |
|---|---|
| Alternative APN |
|
| Total Rooms | 19 Rooms |
|---|---|
| Stories | 1 Story |
| Building Area | 6,996 sqft Gross Area |
| 1st Floor Area | 6,996 sqft |
| Year Built | Built 1978 |
|---|---|
| Effective Year Built | Effective 1978 |
| Lot Area | 78,408 sqft |
| Street Address | 2520 STANWELL DR |
|---|---|
| City | CONCORD |
| State | CA |
| Zip | 94520-4840 |
| Property Category | Commercial |
| Property Type | Commercial > Office > Commercial Office |
| Legal Description | PCL MAP 34 PG 33 PCL C EX 1/2 MR |
| Legal Subdivision | PM 34 33 |
| Legal Tract | 34PM33 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2023 |
| Census Tract | 327001 |
Source: Contra Costa County records, as of July 14, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | 2 Company Names on Record |
|---|---|
| Mailing Address | 4057 PORT CHICAGO HWY, 100, CONCORD, CA 94520-1164 |
| Owner Type | Company |
| Vesting | Company |
| Date | Document |
|---|---|
| Apr 23, 2026 | Grant Deed, Transfer · Conventional Mortgage UNITED BUSN BANK |
| Mar 6, 2020 | Grant Deed, Transfer POPPY BK |
| Aug 2, 2019 | Quit Claim Deed, Transfer NOT AVAILABLE |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Apr 23, 2026 · Amount on Record |
| Deed Sale | Apr 23, 2026 · Amount on Record |
| Prior Sale | Mar 6, 2020 · Amount on Record |
| Deed Document Number | 202641774 |
| Prior Transfer Date | Mar 22, 2019 |
| Prior Transfer Doc | 0000121322 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Apr 23, 2026 |
| Property Address | 2520 STANWELL DR, CONCORD, CA 94520-4840 |
| Document Number | 0000041774 |
| Instrument Date | Apr 17, 2026 |
| Instrument | 2026.41774 |
| Transaction Type | Transfer |
| Record Updated | May 4, 2026 |
| Title Company | E-CHICAGO TITLE, CHICAGO TITLE |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $381,628.50 |
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Company |
| Document Number | 0000041775, |
|---|---|
| Date | Apr 23, 2026 |
| Instrument | 2026.41775 |
| Name | UNITED BUSN BANK |
|---|
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 6.11% |
| Initial Type | Adjustable Rate |
| Adjustable | Adjustable Rate Rider |
| Max Rate | -1% |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Mar 6, 2020 |
| Property Address | 2520 STANWELL DR, CONCORD, CA 94520-4840 |
| Document Number | 0000043630 |
| Instrument Date | Mar 3, 2020 |
| Instrument | 43630 |
| Transaction Type | Transfer |
| Record Updated | Mar 18, 2020 |
| Title Company | OLD REPUBLIC TITLE |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $4,730.00 |
| Amount Accuracy | Full Value |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Personal Trust |
| Address | 8105 EDGEWATER DR #115 OAKLAND CA 946212028, 115, OAKLAND, CA 94621-2028 |
| Document Number | 43631 |
|---|---|
| Date | Mar 6, 2020 |
| Instrument | 43631 |
| Name | POPPY BK |
|---|---|
| Address | 438 1ST ST, SANTA ROSA, CA 95401-6334 |
| Amount | Amount Recorded |
|---|
| Rate Type | Adjustable Rate |
|---|
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Aug 2, 2019 |
| Property Address | 2520 STANWELL DR, CONCORD, CA 94520-4840 |
| Document Number | 0000121322 |
| Instrument Date | Mar 22, 2019 |
| Instrument | 121322 |
| Transaction Type | Transfer |
| Record Updated | Aug 8, 2019 |
| Title Company | NOT AVAILABLE |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Personal Trust |
| Address | PO BOX 1548 TAHOE CITY CA 961451548, TAHOE CITY, CA 96145-1548 |
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 | $3,550,000 (-15.48%) Land $908,100 Building $2,641,900 | |
| 2025 | $43,442.00 (-22.51%) | $4,200,000 (-7.08%) Land $1,074,400 Building $3,125,600 |
| 2023 | $56,060.00 (+7.02%) | $4,520,066 Land $1,156,295 Building $3,363,771 |
| 2022 | $52,383.00 |
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 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 7 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.
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 611 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 · DSL · Fixed Wireless in parts of the area | 5,000 / 5,000 |
| Xfinity Cable · Fiber in parts of the area | 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 |
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