San Joaquin County property record for 28937 S Koster Rd, Tracy, CA 95304
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1 ba · 1,379 sqft · built 1935 |
| Lot Size | 1 acres (43,560 sqft) |
| Owner | Individual Name on Record |
| Last Sale | $671,000 (Jul 2024) |
| Tax Bill | $7,207 (2026) |
| Flood Zone | Zone X (minimal risk) |
| APN | 255-120-070-000 |
| Primary APN | 255-120-070-000 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Bath |
| Stories | 1 Story |
| Building Area | 1,379 sqft Living Area |
| 1st Floor Area | 1,379 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1935 |
|---|---|
| Effective Year Built | Effective 1935 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 43,560 sqft (1 acres) |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | None |
|---|
| Old Parcel Number | 255-120-07 |
|---|---|
| Street Address | 28937 S KOSTER RD |
| City | TRACY |
| State | CA |
| Zip | 95304-9542 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | AG40 |
| Legal Block | 1 |
| Jurisdiction | SAN JOAQUIN CA |
| Township / Civil Division | TRACY |
| Census Block Group | 1 |
| Census Block | 1005 |
| Census Tract | 5503 |
Source: San Joaquin County records, as of October 13, 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 Record |
|---|---|
| Mailing Address | PO BOX 565, RIPON, CA 95366-0565 |
| Owner Type | Individual |
| Vesting | Surviving Spouse |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jul 26, 2024 · Amount on Record |
| Deed Sale | Jul 26, 2024 · Amount on Record |
| Deed Document Number | 202462690 |
| Prior Transfer Date | Jul 25, 2024 |
| Prior Transfer Doc | 0000062689 |
| Record Updated | Oct 29, 2026 |
Source: San Joaquin County assessment roll, as of September 24, 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) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $7,207.00 (+613.56%) | ||
| 2025 | $1,010.00 (+4.55%) | $88,735 (+4.04%) Land $38,484 Building $50,251 | |
| 2023 | $966.00 (+1.68%) Homeowner's exemption | $85,291 Land $36,991 Building $48,300 | $718,920 |
| 2022 | $950.00 |
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 September 27, 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 |
| Community Rating System | Class 7 (15% premium discount) |
| Nearby Flood Policies | 3 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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 67% of the US · above 42% of California |
|---|---|
| Wildfire Likelihood | 0.3% annual chance |
| Exposure | Direct burnable vegetation |
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: FCC Broadband Data Collection, based on 6 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| ezWave Fixed Wireless | 1,000 / 200 |
| Matrix Broadband Fixed Wireless | 400 / 80 |
| unWired Broadband Fixed Wireless | 400 / 50 |
| Verizon Fixed Wireless | 300 / 20 |
| Cal.net Fixed Wireless | 100 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: AT&T.
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