San Joaquin County property record for 31399 S Koster Rd, Tracy, CA 95304
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1 ba · 1,839 sqft · built 1961 |
| Lot Size | 0.582 acres (25,391 sqft) |
| Owner | Company Name on File |
| Tax Bill | $967 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 255-310-290-000 |
| Primary APN | 255-310-290-000 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Bath |
| Stories | 1 Story |
| Building Area | 1,839 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1961 |
|---|---|
| Architectural Style | Other |
| Construction Type | Wood |
| Lot Area | 25,391 sqft (0.582 acres) |
| Garage Type | Mixed |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | None |
|---|
| Street Address | 31399 S KOSTER RD |
|---|---|
| City | TRACY |
| State | CA |
| Zip | 95304-8824 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | 19 |
| Legal Description | REDRAW 901115 FR ORIG APN 255110223 |
| Jurisdiction | SAN JOAQUIN CA |
| Township / Civil Division | TRACY |
| Census Block Group | 1 |
| Census Block | 1005 |
| Census Tract | 5503 |
Source: San Joaquin County records · APN 255-310-290-000
Assessment roll updated July 1, 2025 · Last verified October 2025
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 |
|---|---|
| Co-owner | 2 Verified Secondary Owners |
| Mailing Address | 1437 CROCE DR, ESCALON, CA 95320-8571 |
| Occupancy | Owner Occupied |
| Owner Type | Company, Secondary Individual |
| Vesting | Trust |
| Deed Names | 3 Verified Names on Deed |
|---|---|
| Prior Sale | Feb 21, 2006 |
| Last Transfer Date | Sep 04, 2025 |
| Transfer Doc | 0000074863 |
| Record Updated | Jun 08, 2026 |
Source: San Joaquin County records · Assessment roll updated July 1, 2025 · Last verified October 2025
| Type | Name |
|---|---|
| State | California |
| County | San Joaquin County |
| Secondary School District | Tracy Unified School District (9-12) (09 - 12) |
| Elementary School District | New Jerusalem 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 |
|---|---|---|
| 2025 | $967.00 (+4.77%) Homeowner's exemption | $89,958 (+4.04%) Land $20,833 Building $69,125 |
| 2023 | $923.00 (+1.88%) Homeowner's exemption | $86,467 Land $20,025 Building $66,442 |
| 2022 | $906.00 |
Source: FEMA National Flood Hazard Layer as of September 27, 2026 · FEMA NFIP claims and policies as of September 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 7 (15% premium discount) |
| Nearby Flood Policies | 3 in force |
| Wildfire Risk | Low lower than 64% of the US · lower than 78% of California |
|---|---|
| Wildfire Likelihood | 0.05% annual chance |
| Exposure | None beyond ember reach |
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 as of December 31, 2025 · Last verified October 2026
| Provider | Max Down / Up (Mbps) |
|---|---|
| ezWave Fixed Wireless | 1,000 / 200 |
| Zinnia Networks Fixed Wireless | 400 / 80 |
| UnWired Broadband Holding Fixed Wireless | 400 / 50 |
| Verizon Fixed Wireless | 300 / 20 |
| Cal.net Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless | 25 / 3 |
| T-Mobile USA Fixed Wireless | 25 / 3 |
May also be available: Xfinity.
Based on FCC filings for 14 locations within half a mile of this property.
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