Contra Costa County property record for 1635 Challenge Dr, Concord, CA 94520
| Property Type | Commercial Office |
|---|---|
| Details | 22,716 sqft · built 1989 |
| Lot Size | 1.02 acres (44,866 sqft) |
| Owner | Company Name on File |
| Last Sale | $1,875,000 (Jun 2012) |
| Tax Bill | $29,624 (2025) |
| Deeds & Mortgages | Sep 2025 Line of Credit Sep 2025 Mortgage + 1 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 127-231-025-9 |
| Primary APN | 127-231-025-9 |
|---|---|
| Alternative APN |
|
| Stories | 1 Story |
|---|---|
| Building Area | 22,716 sqft Gross Area |
| 1st Floor Area | 22,716 sqft |
| Year Built | Built 1989 |
|---|---|
| Effective Year Built | Effective 1990 |
| Lot Area | 44,866 sqft |
| Street Address | 1635 CHALLENGE DR |
|---|---|
| City | CONCORD |
| State | CA |
| Zip | 94520-5206 |
| Property Category | Commercial |
| Property Type | Commercial > Office > Commercial Office |
| Legal Description | T207PM28 PCL B |
| Legal Subdivision | MS 11-001 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2057 |
| Census Tract | 327001 |
Source: Contra Costa County assessment roll, 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 File |
|---|---|
| Mailing Address | 1635 CHALLENGE DR, CONCORD, CA 94520-5206 |
| Owner Type | Company |
| Vesting | Company |
| Date | Document |
|---|---|
| Sep 23, 2025 | Deed of Trust, Mortgage · Line of Credit FARMERS & MERCHANTS BANK OF CENTRAL CALI |
| Sep 23, 2025 | Deed of Trust, Mortgage · Commercial Mortgage FARMERS & MERCHANTS BANK OF CENTRAL CALI |
| Jul 11, 2022 | Deed of Trust, Mortgage · Line of Credit FARMERS & MERCHANTS BANK OF CENTRAL CA |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Jun 1, 2012 · Amount on Record |
| Deed Sale | Jun 1, 2012 · Amount on Record |
| Deed Document Number | 2012129776 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 1635 CHALLENGE DR, CONCORD, CA 94520-5206 |
| Transaction Type | Mortgage |
| Record Updated | Oct 2, 2025 |
| Title Company | OLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY |
| Name | Verified Name |
|---|---|
| Address | 1635 CHALLENGE DR, CONCORD, CA 94520-5206 |
| Document Number | 0000099394 |
|---|---|
| Date | Sep 23, 2025 |
| Instrument | 2025- 099394 |
| Name | FARMERS & MERCHANTS BANK OF CENTRAL CALI |
|---|---|
| Address | 116 W PINE ST, LODI, CA 95240 |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 1635 CHALLENGE DR, CONCORD, CA 94520-5206 |
| Transaction Type | Mortgage |
| Record Updated | Oct 2, 2025 |
| Title Company | UNKNOWN, ORTC |
| Name | Verified Name |
|---|---|
| Address | 1635 CHALLENGE DR, CONCORD, CA 94520-5206 |
| Document Number | 0000099390 |
|---|---|
| Date | Sep 23, 2025 |
| Instrument | 2025- 099390 |
| Name | FARMERS & MERCHANTS BANK OF CENTRAL CALI |
|---|---|
| Address | 121 W PINE ST, LODI, CA 95240 |
| Type | Commercial Mortgage |
|---|---|
| Amount | Amount Recorded |
| Rate Type | Adjustable Rate |
|---|
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 1635 CHALLENGE DR, CONCORD, CA 94520-5206 |
| Transaction Type | Mortgage |
| Record Updated | Nov 3, 2022 |
| Name | Verified Name |
|---|---|
| Address | 1635 CHALLENGE DR, CONCORD, CA 94520-5206 |
| Document Number | 0000110992 |
|---|---|
| Date | Jul 11, 2022 |
| Instrument | 2022-110992 |
| Name | FARMERS & MERCHANTS BANK OF CENTRAL CA |
|---|---|
| Type | Bank |
| Address | LODI, CA 95241 |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
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 | $2,402,199 (+2%) Land $800,730 Building $1,601,469 | |
| 2025 | $29,624.00 (-4.3%) | $2,355,098 (+4.04%) Land $785,030 Building $1,570,068 |
| 2023 | $30,955.00 (+14.75%) | $2,263,649 Land $754,548 Building $1,509,101 |
| 2022 | $26,976.00 |
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 |
|---|---|
| Nearest Special Flood Hazard Area | Zone A, within 500 ft |
| 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 | Low lower than 98% of the US · lower than 98.4% 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 | 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 269 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · Fixed Wireless, DSL in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 2,000 |
| Astound Broadband Cable | 1,500 / 50 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
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