Contra Costa County property record for 507 Lassen Way, Oakley, CA 94561
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 2,561 sqft · built 2005 |
| Lot Size | 0.103 acres (4,500 sqft) |
| Owner | Individual Name on File |
| Last Sale | $350,000 (May 2008) |
| Tax Bill | $6,686 (2025) |
| Deeds & Mortgages | Feb 2018 Line of Credit Aug 2018 Mortgage + 2 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 033-420-042-5 |
| Primary APN | 033-420-042-5 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 11 Rooms |
| Stories | 2 Stories |
| Building Area | 2,561 sqft Living Area |
| 1st Floor Area | 1,484 sqft |
| 2nd Floor Area | 1,077 sqft |
| Year Built | Built 2005 |
|---|---|
| Effective Year Built | Effective 2005 |
| Lot Area | 4,500 sqft (0.103 acres) |
| Garage Type | Attached |
| Garage Area | 438 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|
| Street Address | 507 LASSEN WAY |
|---|---|
| City | OAKLEY |
| State | CA |
| Zip | 94561-5232 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T8816 L42 |
| Legal Subdivision | SUBDIVISION 8816 |
| Legal Tract | 8816 |
| Legal Lot Number | 42 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | EAST CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2018 |
| Census Tract | 302012 |
507 Lassen Way is owned and occupied by an individual who acquired it in June 2018.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 507 LASSEN WAY, OAKLEY, CA 94561-5232 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Date | Document |
|---|---|
| Feb 6, 2018 | Deed of Trust, Mortgage · Line of Credit WELLS FARGO BANK NA |
| Aug 13, 2018 | Deed of Trust, Mortgage · Conventional Mortgage QUICKEN LNS |
| Aug 9, 2018 | Quit Claim Deed, Transfer VANTAGE PT TITLE INC |
| May 24, 2018 | Deed of Trust, Mortgage · Conventional Mortgage QUICKEN LNS |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | May 12, 2008 · Amount on File |
| Deed Sale | May 12, 2008 · Amount on File |
| Prior Sale | Aug 8, 2005 · Amount on File |
| Deed Document Number | 2008104113 |
| Last Transfer Date | Jun 27, 2018 |
| Transfer Doc | 0000127233 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 507 LASSEN WAY, OAKLEY, CA 94561-5232 |
| Transaction Type | Mortgage |
| Record Updated | Nov 3, 2022 |
| Name | Verified Name |
|---|
| Document Number | 0000018693 |
|---|---|
| Date | Feb 6, 2018 |
| Instrument | 2018-018693 |
| Name | WELLS FARGO BANK NA |
|---|---|
| Type | Bank |
| Address | SIOUX FALLS, SD 57104 |
| Type | Line of Credit |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Feb 29, 2048 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 507 LASSEN WAY, OAKLEY, CA 94561-5232 |
| Document Number | 0000131756 |
| Instrument Date | Aug 13, 2018 |
| Transaction Type | Mortgage |
| Record Updated | Aug 27, 2018 |
| Title Company | AMROCK TITLE CA INC |
| Name | Verified Name |
|---|---|
| Address | 507 LASSEN WAY OAKLEY CA 945615232, OAKLEY, CA 94561-5232 |
| Document Number | 0000131756 |
|---|---|
| Date | Aug 17, 2018 |
| Instrument | 131756 |
| Name | QUICKEN LNS |
|---|---|
| Type | Funding / Finance Company |
| Address | DETROIT, MI 48226-1906 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 360 Months |
| Due | Aug 16, 2048 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Aug 9, 2018 |
| Property Address | 507 LASSEN WAY, OAKLEY, CA 94561-5232 |
| Document Number | 0000127233 |
| Instrument Date | Jun 27, 2018 |
| Instrument | 127233 |
| Transaction Type | Transfer |
| Record Updated | Aug 21, 2018 |
| Title Company | VANTAGE PT TITLE INC |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 507 LASSEN WAY OAKLEY CA 945615232, OAKLEY, CA 94561-5232 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 507 LASSEN WAY, OAKLEY, CA 94561-5232 |
| Document Number | 0000086347 |
| Instrument Date | May 24, 2018 |
| Transaction Type | Mortgage |
| Record Updated | Jun 8, 2018 |
| Title Company | TITLE SOURCE |
| Name | Verified Name |
|---|---|
| Address | 507 LASSEN WAY OAKLEY CA 945615232, OAKLEY, CA 94561-5232 |
| Document Number | 0000086347 |
|---|---|
| Date | May 31, 2018 |
| Instrument | 86347 |
| Name | QUICKEN LNS |
|---|---|
| Type | Funding / Finance Company |
| Address | DETROIT, MI 48226-1906 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 240 Months |
| Due | May 30, 2038 |
The 2025 property tax bill for 507 Lassen Way was $6,686 with a homeowner's exemption.
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Oakley City |
| Secondary School District | Liberty Union High School District (09 - 12) |
| Elementary School District | Oakley Union Elementary School District (KG - 08) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $468,775 (+2%) Land $80,378 Building $388,397 | |
| 2025 | $6,686.00 Homeowner's exemption | $459,584 Land $78,802 Building $380,782 |
| 2023 | $6,459.00 (-0.12%) Homeowner's exemption | $441,740 Land $75,743 Building $365,997 |
| 2022 | $6,467.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 507 Lassen Way in Zone X, an area of minimal flood risk.
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.
Wildfire risk around 507 Lassen Way is low, with a 0.02% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 93% of the US · lower than 96% of California |
|---|---|
| Wildfire Likelihood | 0.02% 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 | DIABLO WATER DISTRICT serves 47,158 people · EPA ID CA0710007 |
|---|---|
| Water Source | Purchased surface water from RANDALL-BOLD WATER TREATMENT PLANT |
| Last State Inspection | Jan 2024 |
| Also Mapped Here | CONTRA COSTA WATER DISTRICT |
| Lead | 2 ppb (2020–2022) 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 597 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 |
| Verizon Fixed Wireless | 300 / 20 |
| AT&T DSL · Fiber in parts of the area | 100 / 20 |
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