Contra Costa County property record for 4100 Knightsen Ave, Oakley, CA 94561
| Property Type | Orchard (Fruit, Nut) |
|---|---|
| Details | 854 sqft · built 1950 |
| Lot Size | 13.8 acres (601,128 sqft) |
| Owner | Individual Name on File |
| Last Sale | $860,000 (Feb 2020) |
| Tax Bill | $10,343 (2025) |
| Deeds & Mortgages | Feb 2020 Sale & Mortgage |
| Flood Zone | Zone X (moderate risk) |
| APN | 032-030-011-4 |
| Primary APN | 032-030-011-4 |
|---|---|
| Alternative APN |
|
| Total Rooms | 1 Room |
|---|---|
| Stories | 1 Story |
| Building Area | 854 sqft Gross Area |
| 1st Floor Area | 854 sqft |
| Year Built | Built 1950 |
|---|---|
| Effective Year Built | Effective 1980 |
| Lot Area | 601,128 sqft |
| Parking Spaces | 3 Parking Spaces |
| Street Address | 4100 KNIGHTSEN AVE |
|---|---|
| City | OAKLEY |
| State | CA |
| Zip | 94561-3611 |
| Property Category | Agriculture or Farming |
| Property Type | Agriculture / Farming > Orchard (Fruit, Nut) |
| Local Zoning Code | A2 |
| Legal Description | PARCEL MAP 18 PG 47 PCL A EX MR |
| Legal Tract | 18PM47 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | EAST CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2007 |
| Census Tract | 302011 |
Source: Contra Costa County assessment roll, APN 032-030-011-4, as of 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 | 4100 KNIGHTSEN AVE, OAKLEY, CA 94561-3611 |
| Owner Type | Individual |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Feb 05, 2020 · Amount on Record |
| Deed Sale | Feb 05, 2020 · Amount on Record |
| Prior Sale | May 25, 2016 · Amount on Record |
| Deed Document Number | 202022655 |
| Prior Transfer Date | May 10, 2016 |
| Prior Transfer Doc | 0000099298 |
| Record Updated | Sep 20, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Feb 05, 2020 |
| Property Address | 4100 KNIGHTSEN AVE, OAKLEY, CA 94561-3611 |
| Document Number | 0000022655 |
| Instrument Date | Jan 29, 2020 |
| Instrument | 22655 |
| Transaction Type | Transfer |
| Record Updated | Mar 09, 2020 |
| Title Company | CHICAGO TITLE COMPANY, CHICAGO TITLE CO |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on File |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $946.00 |
| Amount Accuracy | Full Value |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 4100 KNIGHTSEN AVE OAKLEY CA 945613611, OAKLEY, CA 94561-3611 |
| Document Number | 22656 |
|---|---|
| Date | Feb 05, 2020 |
| Instrument | 22656 |
| Name | SUPREME LNDG |
|---|---|
| Address | DALLAS, TX 75254 |
| Type | Conventional with PMI |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Feb 04, 2050 |
Source: Contra Costa County assessment roll as of July 14, 2026 · Last verified July 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Secondary School District | Liberty Union High School District (09 - 12) |
| Elementary School District | Oakley Union 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 | $959,340 (+2%) Land $708,351 Building $250,989 | |
| 2025 | $10,343.00 (-57.48%) | $940,530 (+4.04%) Land $694,462 Building $246,068 |
| 2023 | $24,323.00 (+145.07%) | $904,011 Land $667,497 Building $236,514 |
| 2022 | $9,925.00 |
Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), as of October 12, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060133020112, as of September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition, as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X moderate risk |
|---|---|
| 500-Year Floodplain | Yes 0.2% annual chance |
| Nearest Special Flood Hazard Area | Zone A, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 6 in force |
| Nearby Flood Claims | 2 (2017–2022) |
| Most Recent Claim | Dec 2022 · Severe Winter Storms, Flooding, Landslides, And Mudslides |
| Wildfire Risk | Moderate above 68% of the US · above 43% of California |
|---|---|
| Wildfire Likelihood | 0.3% annual chance |
| 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, 8 locations within half a mile, as of December 31, 2025 · Last verified October 2026
| Provider | Max Down / Up (Mbps) |
|---|---|
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| Starlink Satellite | 280 / 30 |
May also be available: AT&T, Xfinity.
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