Contra Costa County property record for 3686 Mount Diablo Blvd, Lafayette, CA 94549 · Last verified July 2026
| Property Type | Residential > Multi-Unit > Apartments (5+ Units) |
|---|---|
| Year Built | Built 1964 |
| Square Footage | 22,514 sqft Living Area |
| Lot Size | 1.26 acres |
| Last Sale | $10,700,000 (2020) |
| Tax Bill | $150,354.00 (2025) |
Source: Contra Costa County records · APN 241-020-004-8
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 | Company Name on File |
|---|---|
| Mailing Address | 2975 SCOTT BLVD, 200, SANTA CLARA, CA 95054-3314 |
| Owner Type | Owner is a Company |
| Date | Document |
|---|---|
| Aug 02, 2021 | Deed of Trust, Mortgage · Commercial Mortgage THE NORTHERN TRUST CO |
| Dec 04, 2020 | Grant Deed, Transfer FIRST AMERICAN TITLE |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Dec 04, 2020 · Amount on Record |
| Deed Sale | Dec 04, 2020 · Amount on Record |
| Deed Doc Number | 2020303836 |
| Prior Transfer Date | Jun 27, 2012 |
| Prior Transfer Doc | 0000153585 |
| Record Refreshed | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 3686 MT DIABLO BLVD, LAFAYETTE, CA 94549-3742 |
| Transaction Type | Mortgage |
| Record Updated | Nov 03, 2022 |
| Title Company | FIRST AMERICAN TITLE |
| Name | Verified Name |
|---|---|
| Address | 2975 SCOTT BLVD 200, 200, SANTA CLARA, CA 95054-3314 |
| Document Number | 0000215998 |
|---|---|
| Date | Aug 02, 2021 |
| Instrument | 2021-215998 |
| Name | THE NORTHERN TRUST CO |
|---|---|
| Type | Bank |
| Address | SAN FRANCISCO, CA 94104 |
| Type | Commercial Mortgage |
|---|---|
| Amount | Amount Recorded |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Dec 04, 2020 |
| Property Address | 3686 MT DIABLO BLVD, LAFAYETTE, CA 94549-3742 |
| Document Number | 0000303836 |
| Instrument Date | Dec 03, 2020 |
| Instrument | 303836 |
| Transaction Type | Transfer |
| Record Updated | Dec 17, 2020 |
| Title Company | FIRST AMERICAN TITLE |
| Amount | Amount Recorded |
|---|---|
| Tax | $11,770.00 |
| Amount Accuracy | Full Value |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Company |
| Address | 2975 SCOTT BLVD #200 SANTA CLARA CA 950543314, 200, SANTA CLARA, CA 95054-3314 |
Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 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) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $11,822,911 (+1.99%) Land $7,728,565 Building $4,094,346 | |
| 2025 | $150,354.00 (+2.85%) | $11,591,842 (+3.99%) Land $7,577,025 Building $4,014,817 |
| 2023 | $146,188.00 (+0.59%) | $11,147,507 Land $7,282,800 Building $3,864,707 |
| 2022 | $145,325.00 |
Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), updated October 12, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified: October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Special Flood Hazard Area | No |
| Wildfire Risk | Not rated no burnable land in reach |
|---|---|
| Wildfire Likelihood | Negligible |
| Exposure | None beyond ember reach |
Values are read at the parcel center point; lenders make the official flood determination.
| Primary APN | 241-020-004-8 |
|---|---|
| Alternative APN |
|
| Total Rooms | 35 Rooms |
|---|---|
| Building Area | 22,514 sqft Living Area |
| 1st Floor | 22,514 sqft 1st Floor |
| Stories | 1 Stories |
| Year Built | Built 1964 |
|---|---|
| Effective Year Built | Effective 1964 |
| Lot Area | 55,321 sqft |
| Street Address | 3686 MT DIABLO BLVD |
|---|---|
| City | LAFAYETTE |
| State | CA |
| Zip | 94549-3742 |
| Property Usage | Residential Property Usage |
| Type | Residential > Multi-Unit > Apartments (5+ Units) |
| Legal Description | POR RO ACALANES |
| Legal Subdivision | ACALANES RHO |
| Jurisdiction | CONTRA COSTA CA |
| Minor Civil Division | CENTRAL CONTRA COSTA |
| Census Blockgroup | 4 |
| Census Block | 4000 |
| Census Tract | 350000 |
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