Contra Costa County property record for 4100 Sandmound Blvd, Knightsen, CA 94548
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 3.5 ba · 2,779 sqft · built 2002 |
| Lot Size | 0.507 acres (22,066 sqft) |
| Owner | Company Name on File |
| Last Sale | $1,100,000 (Mar 2011) |
| Tax Bill | $3,564 (2025) |
| Flood Zone | Zone AE (high risk) |
| APN | 020-290-001-5 |
| Primary APN | 020-290-001-5 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 9 Rooms |
| Stories | 1 Story |
| Building Area | 2,779 sqft Living Area |
| 1st Floor Area | 2,579 sqft |
| Basement Area | 200 sqft |
| Year Built | Built 2002 |
|---|---|
| Effective Year Built | Effective 2003 |
| Architectural Style | Cluster |
| Lot Area | 22,066 sqft (0.507 acres) |
| View / Lot | Waterfront |
| Garage Type | Attached |
| Garage Area | 1,025 sqft |
| Parking Spaces | 4 Parking Spaces |
| Cooling System | Central |
|---|
| Street Address | 4100 SANDMOUND BLVD |
|---|---|
| City | KNIGHTSEN |
| State | CA |
| Zip | 94548 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | P1 |
| Legal Description | T6610 L1 |
| Legal Tract | 6610 |
| Legal Lot Number | 1 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | EAST CONTRA COSTA |
| Census Block Group | 3 |
| Census Block | 3022 |
| Census Tract | 301000 |
Source: Contra Costa County assessment roll, 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 File |
|---|---|
| Mailing Address | 1369 BENTLEY CT, WEST COVINA, CA 91791-4320 |
| Owner Type | Company |
| Vesting | Company |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Mar 16, 2011 · Amount on Record |
| Deed Sale | Mar 16, 2011 · Amount on Record |
| Prior Sale | Aug 20, 2001 · Amount on Record |
| Deed Document Number | 201155858 |
| Prior Transfer Date | Jul 9, 2001 |
| Prior Transfer Doc | 0000246633 |
| Record Updated | Sep 20, 2026 |
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Elementary School District | Knightsen Elementary School District (KG - 08) |
| Secondary School District | Liberty Union High School District (09 - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $191,275 (+2%) Land $25,114 Building $166,161 | |
| 2025 | $3,564.00 (+3.91%) | $187,525 (+4.04%) Land $24,622 Building $162,903 |
| 2023 | $3,430.00 (+1.75%) | $180,245 Land $23,667 Building $156,578 |
| 2022 | $3,371.00 |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
Source: FEMA National Flood Hazard Layer, effective October 12, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone AE high risk |
|---|---|
| 100-Year Floodplain | Yes 1% annual chance |
| Floodway | No |
| Base Flood Elevation | 9.0 ft |
| Flood Insurance Requirement | Required federally backed loans |
| Flood Insurance Cost | Premium on Record median of 24 policies |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 24 in force |
| Nearby Flood Claims | 16 (1978–2017) |
| Most Recent Claim | Jan 2017 · Severe Winter Storms, Flooding, And Mudslides |
| Claims by Event |
|
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 59% of the US · lower than 64% of California |
|---|---|
| Wildfire Likelihood | 0.1% annual chance |
| Exposure | None beyond ember reach |
Source: FCC Broadband Data Collection, based on 46 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
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