Contra Costa County property record for 3705 Mount Diablo Blvd, Lafayette, CA 94549
| Property Type | Commercial Office |
|---|---|
| Details | 2,000 sqft · built 1965 |
| Lot Size | 0.2 acres (8,712 sqft) |
| Owner | Company Name on Record |
| Last Sale | $852,500 (Dec 2006) |
| Tax Bill | $13,222 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 241-050-017-3 |
| Primary APN | 241-050-017-3 |
|---|---|
| Alternative APN |
|
| Total Rooms | 1 Room |
|---|---|
| Stories | 1 Story |
| Building Area | 2,000 sqft Gross Area |
| 1st Floor Area | 2,000 sqft |
| Year Built | Built 1965 |
|---|---|
| Effective Year Built | Effective 1965 |
| Exterior Material | Stucco |
| Construction Type | Frame |
| Roof Type | Flat |
| Roof Material | Built-Up Asphalt |
| Lot Area | 8,712 sqft (0.2 acres) |
| Garage Area | 3,000 sqft |
| Cooling System | HVAC |
|---|---|
| Heating System | HVAC |
| Street Address | 3705 MT DIABLO BLVD |
|---|---|
| City | LAFAYETTE |
| State | CA |
| Zip | 94549-3540 |
| Property Category | Commercial |
| Property Type | Commercial > Office > Commercial Office |
| Legal Description | POR RO ACALANES |
| Legal Subdivision | RANCHO ACALANES |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 4 |
| Census Block | 4002 |
| Census Tract | 350000 |
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 | 3464 SILVER SPRINGS RD, LAFAYETTE, CA 94549-5218 |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Dec 28, 2006 · Amount on Record |
| Deed Sale | Dec 28, 2006 · Amount on Record |
| Deed Document Number | 2006413047 |
| Record Updated | Sep 20, 2026 |
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Lafayette City |
| Secondary School District | Acalanes Union High School District (09 - 12) |
| Elementary School District | Lafayette Elementary School District (KG - 08) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $1,005,000 (+0.3%) Land $353,700 Building $651,300 | |
| 2025 | $13,222.00 (+3.38%) | $1,002,000 (+4.38%) Land $352,600 Building $649,400 |
| 2023 | $12,790.00 (+2.03%) | $960,000 Land $337,800 Building $622,200 |
| 2022 | $12,536.00 |
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 AE, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 4 in force |
| Nearby Flood Claims | 6 (1983–1998) |
| Claims Outside the SFHA | 4 of 6 |
| Most Recent Claim | Feb 1998 · Severe Winter Storms And Flooding |
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 | Moderate above 44% of the US · lower than 74% of California |
|---|---|
| Wildfire Likelihood | 0.07% annual chance |
| Exposure | Direct burnable vegetation |
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 | EAST BAY MUD serves 1,468,000 people · EPA ID CA0110005 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Dec 2021 |
| 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. This system sells water to local utilities; the supplier billing this address may be one of them.
Source: FCC Broadband Data Collection, based on 275 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: Etheric Networks, T-Mobile, Verizon.
5G (outdoors only) and 4G LTE
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