Contra Costa County property record for 1730 Argonne Dr, Concord, CA 94518
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.5 ba · 2,093 sqft · built 1969 |
| Lot Size | 0.241 acres (10,500 sqft) |
| Owner | 2 Company Names on Record |
| Last Sale | $1,275,500 (Sep 2021) |
| Tax Bill | $15,944 (2025) |
| Deeds & Mortgages | Oct 2021 Mortgage Sep 2021 Sale + 1 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 145-090-030-1 |
| Primary APN | 145-090-030-1 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 10 Rooms |
| Stories | 1 Story |
| Building Area | 2,093 sqft Living Area |
| 1st Floor Area | 2,093 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1969 |
|---|---|
| Effective Year Built | Effective 1988 |
| Architectural Style | Ranch |
| Exterior Material | Wood |
| Roof Material | Wood Shingle |
| Lot Area | 10,500 sqft (0.241 acres) |
| Garage Type | Attached |
| Garage Area | 441 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 1730 ARGONNE DR |
|---|---|
| City | CONCORD |
| State | CA |
| Zip | 94518-3505 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10 |
| Legal Description | TRACT 3860 LOT 8 |
| Legal Subdivision | SUBDIVISION 3860 |
| Legal Tract | 3860 |
| Legal Lot Number | 8 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1005 |
| Census Tract | 338201 |
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 | 2 Company Names on Record |
|---|---|
| Mailing Address | 221 ROUNDHILL PL, CLAYTON, CA 94517-1318 |
| Owner Type | Company |
| Vesting | Trust |
| Date | Document |
|---|---|
| Oct 15, 2021 | Intrafamily Transfer, Transfer · Conventional Mortgage LENDUS LLC |
| Sep 3, 2021 | Grant Deed, Transfer NORTH AMERICAN TITLE CO INC |
| Jul 2, 2019 | Grant Deed, Transfer FIDELITY NATIONAL TITLE |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Sep 3, 2021 · Amount on Record |
| Deed Sale | Sep 3, 2021 · Amount on Record |
| Prior Sale | Jul 2, 2019 · Amount on Record |
| Deed Document Number | 2021247722 |
| Last Transfer Date | Oct 1, 2021 |
| Transfer Doc | 0000285388 |
| Record Updated | Sep 20, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Oct 15, 2021 |
| Property Address | 1730 ARGONNE DR, CONCORD, CA 94518-3505 |
| Document Number | 0000285388 |
| Map Reference | MB 126 PG 6 |
| Instrument Date | Oct 1, 2021 |
| Instrument | 2021-285388 |
| Transaction Type | Transfer |
| Record Updated | Jun 7, 2023 |
| Title Company | CHICAGO TITLE COMPANY |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Family Trust |
| Address | 1730 ARGONNE DR, CONCORD, CA 94518-3505 |
| Document Number | 0000285389 |
|---|---|
| Date | Oct 15, 2021 |
| Instrument | 2021-285389 |
| Name | LENDUS LLC |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Nov 1, 2051 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Sep 3, 2021 |
| Property Address | 1730 ARGONNE DR, CONCORD, CA 94518-3505 |
| Document Number | 0000247722 |
| Map Reference | MB 126 PG 6 |
| Instrument Date | Sep 1, 2021 |
| Instrument | 2021-247722 |
| Transaction Type | Transfer |
| Record Updated | Jun 7, 2023 |
| Title Company | NORTH AMERICAN TITLE CO INC |
| Amount | Amount Recorded |
|---|---|
| Tax | $0.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Family Trust |
| Address | 221 ROUNDHILL PL, CLAYTON, CA 94517-1318 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Jul 2, 2019 |
| Property Address | 1730 ARGONNE DR, CONCORD, CA 94518-3505 |
| Document Number | 0000101068 |
| Instrument Date | Jun 21, 2019 |
| Instrument | 101068 |
| Transaction Type | Transfer |
| Record Updated | Jul 10, 2019 |
| Title Company | FIDELITY NATIONAL TITLE |
| Amount | Amount Recorded |
|---|---|
| Tax | $990.00 |
| Amount Accuracy | Full Value |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Living Trust |
| Address | 1730 ARGONNE DR CONCORD CA 945183505, CONCORD, CA 94518-3505 |
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 | $1,380,100 (+2%) Land $947,128 Building $432,972 | |
| 2025 | $15,944.00 (+4.19%) | $1,353,040 (+4.04%) Land $928,557 Building $424,483 |
| 2023 | $15,303.00 (+1.1%) | $1,300,500 Land $892,500 Building $408,000 |
| 2022 | $15,136.00 |
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 7 (15% premium discount) |
| Nearby Flood Policies | 9 in force |
| Nearby Flood Claims | 1 (1982) |
| Most Recent Claim | Jan 1982 · Severe Storms, Flood, Mudslides & High Tide |
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 406 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Astound Broadband Cable | 1,500 / 50 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| AT&T Fixed Wireless · DSL | 100 / 20 |
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