Contra Costa County property record for 3944 Main St, Byron, CA 94514 · Last verified July 2026
| Property Type | Commercial Office |
|---|---|
| Details | 2,000 sqft · built 1915 |
| Lot Size | 0.092 acres (3,997 sqft) |
| Owner | Individual Name on File |
| Last Sale | $129,000 (Jun 2012) |
| Tax Bill | $2,980 (2025) |
| Flood Zone | Zone X (moderate risk) |
| APN | 002-102-006 |
| Primary APN | 002-102-006 |
|---|---|
| Alternative APN |
|
| Stories | 1 Story |
|---|---|
| Building Area | 2,000 sqft Gross Area |
| 1st Floor Area | 2,000 sqft |
| Year Built | Built 1915 |
|---|---|
| Effective Year Built | Effective 1940 |
| Lot Area | 3,997 sqft (0.092 acres) |
| Street Address | 3944 MAIN ST |
|---|---|
| City | BYRON |
| State | CA |
| Zip | 94514 |
| Property Category | Commercial |
| Property Type | Commercial > Office > Commercial Office |
| Legal Description | TOWN OF BYRON LOT 13 |
| Legal Subdivision | TOWN OF BYRON |
| Legal Lot Number | 13 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | EAST CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1084 |
| Census Tract | 304002 |
Source: Contra Costa County records · APN 002-102-006
Assessment roll updated July 14, 2026 · Last verified July 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 757 3RD AVE, SAN FRANCISCO, CA 94118-3908 |
| Owner Type | Individual |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Jun 26, 2012 · Amount on Record |
| Deed Sale | Jun 26, 2012 · Amount on Record |
| Deed Document Number | 2012150185 |
| Record Updated | Sep 20, 2026 |
Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Elementary School District | Byron Union Elementary School District (KG - 08) |
| Secondary School District | Liberty Union High School District (09 - 12) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $165,258 (+2%) Land $64,051 Building $101,207 | |
| 2025 | $2,980.00 (+61.17%) | $162,019 (+4.04%) Land $62,796 Building $99,223 |
| 2023 | $1,849.00 (-35.57%) | $155,729 Land $60,358 Building $95,371 |
| 2022 | $2,870.00 |
Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), updated October 12, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060133040021, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Special Flood Hazard Area | No |
| Flood Hazard | Moderate |
| 500-Year Floodplain | Yes |
| Nearest Special Flood Hazard Area | Zone A, within 500 ft |
| Flood Insurance Cost | Premium on Record median of 22 individual NFIP policies nearby |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 22 in force |
| Nearby Flood Claims | 7 (1980–2023) |
| Claims Outside the SFHA | 2 of 7 |
| Most Recent Claim | Mar 2023, rainfall accumulation |
| Claims By Storm |
|
| Wildfire Risk | Moderate above 65% of the US · above 40% of California |
|---|---|
| Wildfire Likelihood | About 1 in 446 per year |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 114 locations within about half a mile of this property
| Provider | Technology | Download / Upload (Mbps) |
|---|---|---|
| Xfinity | Cable | 2,000 / 250 |
| Unwired | Fixed Wireless | 300 / 25 |
| Verizon | Fixed Wireless | 300 / 20 |
| T-Mobile USA | Fixed Wireless | 100 / 20 |
Availability varies by address; speeds are provider-advertised maximums, not measured.
5G and 4G LTE
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