Contra Costa County property record for 3747 Sunset Ln, Antioch, CA 94509
| Property Type | Medical Building |
|---|---|
| Details | 3,672 sqft · built 1986 |
| Lot Size | 0.084 acres (3,659 sqft) |
| Owner | 2 Company Names on Record |
| Last Sale | $605,000 (Jan 2023) |
| Tax Bill | $12,922 (2025) |
| Deeds & Mortgages | Jan 2023 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 068-362-021-5 |
| Primary APN | 068-362-021-5 |
|---|---|
| Alternative APN |
|
| Total Rooms | 1 Room |
|---|---|
| Stories | 1 Story |
| Building Area | 3,672 sqft Gross Area |
| 1st Floor Area | 3,672 sqft |
| Year Built | Built 1986 |
|---|---|
| Effective Year Built | Effective 1986 |
| Lot Area | 3,659 sqft (0.084 acres) |
| Street Address | 3747 SUNSET LN |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94509-6101 |
| Property Category | Commercial |
| Property Type | Commercial > Office > Medical Building |
| Legal Description | T119PM41 U3 |
| Legal Subdivision | ANTIOCH |
| Legal Tract | 119PM41 |
| Legal Lot Number | 8 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | ANTIOCH-PITTSBURG |
| Census Block Group | 4 |
| Census Block | 4008 |
| Census Tract | 308001 |
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 | 15 VISTA DEL MAR, ORINDA, CA 94563-1732 |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jan 20, 2023 · Amount on Record |
| Deed Sale | Jan 20, 2023 · Amount on Record |
| Prior Sale | Nov 9, 2004 · Amount on Record |
| Deed Document Number | 20235360 |
| Prior Transfer Date | Aug 21, 2007 |
| Prior Transfer Doc | 0000252260 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Jan 20, 2023 |
| Property Address | 3747 SUNSET LN, ANTIOCH, CA 94509-6101 |
| Document Number | 0000005360 |
| Map Reference | MB 119 PG 41 |
| Instrument Date | Nov 21, 2022 |
| Instrument | 2023-005360 |
| Transaction Type | Transfer |
| Record Updated | Jun 7, 2023 |
| Title Company | OLD REPUBLIC TITLE COMPANY |
| Amount | Amount Recorded |
|---|---|
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $0.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Family Living Trust |
| Address | 15 VISTA DEL MAR, ORINDA, CA 94563-1732 |
| Document Number | 0000005361 |
|---|---|
| Date | Jan 20, 2023 |
| Instrument | 2023-005361 |
| Name | FARMERS & MERCHANTS BANK OF CENTRAL CA |
|---|---|
| Type | Bank |
| Address | LODI, CA 95241 |
| Type | Commercial Mortgage |
|---|---|
| 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 | Antioch City |
| Unified School District | Antioch Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $1,114,226 (+2%) Land $221,496 Building $892,730 | |
| 2025 | $12,922.00 (+7.08%) | $1,092,379 (+11.08%) Land $217,153 Building $875,226 |
| 2023 | $12,068.00 (+3.59%) | $983,373 Land $180,950 Building $802,423 |
| 2022 | $11,650.00 |
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 | 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 | CITY OF ANTIOCH serves 116,781 people · EPA ID CA0710001 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Jan 2024 |
| 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.
Source: FCC Broadband Data Collection, based on 376 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| AT&T DSL · Fiber in parts of the area | 100 / 20 |
May also be available: Verizon.
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