San Joaquin County property record for 31525 S Koster Rd, Tracy, CA 95304
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,373 sqft · built 1982 |
| Lot Size | 1.69 acres (73,616 sqft) |
| Owner | Company Name on Record |
| Last Sale | $735,000 (Aug 2005) |
| Tax Bill | $7,821 (2026) |
| Deeds & Mortgages | Mar 2022 Mortgage Oct 2021 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 255-100-150-000 |
| Primary APN | 255-100-150-000 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Stories | 1 Story |
| Building Area | 1,373 sqft Living Area |
| 1st Floor Area | 1,373 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1982 |
|---|---|
| Effective Year Built | Effective 1982 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 73,616 sqft (1.69 acres) |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Old Parcel Number | 255-100-15 |
|---|---|
| Street Address | 31525 S KOSTER RD |
| City | TRACY |
| State | CA |
| Zip | 95304-9551 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | RR |
| Legal Description | 81-FM 255-100-05 PT TO 16 17& RD 80082225 PM 9-174 |
| Legal Block | 1 |
| Legal Lot Number | A |
| Jurisdiction | SAN JOAQUIN CA |
| Township / Civil Division | TRACY |
| Census Block Group | 1 |
| Census Block | 1021 |
| 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 | Company Name on Record |
|---|---|
| Mailing Address | 1375 MONTAUBAN ST, TRACY, CA 95304-5905 |
| Owner Type | Company |
| Vesting | Trust |
| Date | Document |
|---|---|
| Mar 10, 2022 | Deed of Trust, Mortgage · Conventional Mortgage FREMONT BANK |
| Oct 25, 2021 | Intrafamily Transfer, Transfer |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Aug 17, 2005 · Amount on Record |
| Deed Sale | Aug 17, 2005 · Amount on Record |
| Prior Sale | Oct 18, 2004 · Amount on Record |
| Deed Document Number | 2005203689 |
| Last Transfer Date | May 30, 2007 |
| Transfer Doc | 0000105424 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SAN JOAQUIN CA |
| Property Address | 31525 S KOSTER RD, TRACY, CA 95304-9551 |
| Transaction Type | Mortgage |
| Record Updated | Jun 8, 2026 |
| Title Company | FIDELITY NATIONAL TITLE |
| Name | Verified Name |
|---|---|
| Address | 31525 S KOSTER RD, TRACY, CA 95304-9551 |
| Document Number | 0000031823 |
|---|---|
| Date | Mar 10, 2022 |
| Instrument | 2022-031823 |
| Name | FREMONT BANK |
|---|---|
| Type | Bank |
| Address | LIVERMORE, CA 94551 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Apr 1, 2052 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | SAN JOAQUIN CA |
| Recording Date | Oct 25, 2021 |
| Property Address | 31525 S KOSTER RD, TRACY, CA 95304-9551 |
| Document Number | 0000178498 |
| Map Reference | MB 9 PG 174 |
| Instrument Date | Oct 12, 2021 |
| Instrument | 2021-178498 |
| Transaction Type | Transfer |
| Record Updated | Jun 7, 2023 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Family Trust |
| Address | 31525 S KOSTER RD, TRACY, CA 95304-9551 |
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 | $7,821.00 (-0.47%) | ||
| 2025 | $7,858.00 (+0.96%) | $750,000 (-) Land $350,000 Building $400,000 | |
| 2023 | $7,783.00 (-0.17%) | $750,000 Land $350,000 Building $400,000 | $830,970 |
| 2022 | $7,796.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
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 | Low lower than 64% of the US · lower than 78% of California |
|---|---|
| Wildfire Likelihood | 0.05% 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: FCC Broadband Data Collection, based on 14 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 |
| AT&T Fixed Wireless | 25 / 3 |
| T-Mobile Fixed Wireless | 25 / 3 |
May also be available: Xfinity.
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