Contra Costa County property record for 4308 Folsom Dr, Antioch, CA 94531
| Property Type | Public School (Administration, Campus, Dorms, Instruction) |
|---|---|
| Details | 6,188 sqft · built 1990 |
| Lot Size | 0.89 acres (38,768 sqft) |
| Owner | Company Name on Record |
| Tax Bill | $17,541 (2025) |
| Deeds & Mortgages | Aug 2026 Mortgage Jul 2021 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 052-061-040-3 |
| Primary APN | 052-061-040-3 |
|---|---|
| Alternative APN |
|
| Total Rooms | 1 Room |
|---|---|
| Stories | 1 Story |
| Building Area | 6,188 sqft Gross Area |
| 1st Floor Area | 6,188 sqft |
| Year Built | Built 1990 |
|---|---|
| Effective Year Built | Effective 1991 |
| Lot Area | 38,768 sqft (0.89 acres) |
| View / Lot | Canal |
| Street Address | 4308 FOLSOM DR |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94531-8211 |
| Property Category | Public Works |
| Property Type | Public Works > Public School (Administration, Campus, Dorms, Instruction) |
| Legal Description | PCL MAP 137 PG 36 PCL B |
| Legal Subdivision | PARCEL MAP MS 12 88 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | ANTIOCH-PITTSBURG |
| Census Block Group | 1 |
| Census Block | 1022 |
| Census Tract | 308002 |
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 | Company Name on Record |
|---|---|
| Mailing Address | 6310 SAN VICENTE BLVD, 250, LOS ANGELES, CA 90048-5447 |
| Owner Type | Company |
| Vesting | Company |
| Date | Document |
|---|---|
| Aug 12, 2026 | Deed of Trust, Mortgage · Conventional Mortgage GOLDMAN SACHS BANK USA |
| Jul 22, 2021 | Deed of Trust, Mortgage · Commercial Mortgage GOLDMAN SACHS BANK USA |
| Deed Names | Name on Deed |
|---|---|
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Aug 12, 2026 |
| Property Address | 4308 FOLSOM DR, ANTIOCH, CA 94531-8211 |
| Document Number | 0000084937 |
| Instrument Date | Aug 4, 2026 |
| Instrument | 202684937 |
| Transaction Type | Mortgage |
| Record Updated | Aug 20, 2026 |
| Title Company | FIRST AMERICAN TITLE |
| Name | Verified Name |
|---|---|
| Relationship | Limited Liability Partnership, 266 |
| Document Number | 0000084937, |
|---|---|
| Date | Aug 12, 2026 |
| Instrument | 202684937 |
| Name | GOLDMAN SACHS BANK USA |
|---|
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 6.49% |
| Initial Type | Adjustable Rate |
| Adjustable | Adjustable Rate Rider |
| Max Rate | -1% |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 4308 FOLSOM DR, ANTIOCH, CA 94531-8211 |
| Transaction Type | Mortgage |
| Record Updated | Nov 3, 2022 |
| Title Company | FIRST AMERICAN TITLE CO NCS |
| Name | Verified Name |
|---|---|
| Address | 1250 4TH ST 5TH 5TH, 55, SANTA MONICA, CA 90401-1366 |
| Document Number | 0000206379 |
|---|---|
| Date | Jul 22, 2021 |
| Instrument | 2021-206379 |
| Name | GOLDMAN SACHS BANK USA |
|---|---|
| Type | Bank |
| Address | NEW YORK, NY 10282 |
| 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 | Antioch City |
| Unified School District | Antioch Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $1,541,975 (+2%) Land $472,119 Building $1,069,856 | |
| 2025 | $17,541.00 (+2.99%) | $1,511,741 (+4.04%) Land $462,862 Building $1,048,879 |
| 2023 | $17,031.00 (+5.87%) | $1,453,040 Land $444,890 Building $1,008,150 |
| 2022 | $16,086.00 |
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 |
| Nearby Flood Policies | 2 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 99.1% of the US · lower than 99.2% 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 | 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 432 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 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless · DSL | 100 / 20 |
May also be available: Verizon.
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