San Joaquin County property record for 20 Mount Oso Ave, Tracy, CA 95376
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,588 sqft · built 1996 |
| Lot Size | 0.277 acres (12,082 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $190,000 (Oct 1997) |
| Tax Bill | $4,224 (2026) |
| Deeds & Mortgages | Mar 2026 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 235-270-440-000 |
| Primary APN | 235-270-440-000 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Stories | 1 Story |
| Building Area | 1,588 sqft Living Area |
| 1st Floor Area | 1,588 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1996 |
|---|---|
| Effective Year Built | Effective 1996 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 12,082 sqft (0.277 acres) |
| Parking Spaces | 3 Parking Spaces |
| Pool Type | Pool with Hot Tub/Spa |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Old Parcel Number | 235-270-44 |
|---|---|
| Street Address | 20 MOUNT OSO AVE |
| City | TRACY |
| State | CA |
| Zip | 95376-4640 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | COUNTRYWOOD LOT 16 |
| Legal Subdivision | COUNTRYWOOD |
| Legal Block | 1 |
| Legal Lot Number | 16 |
| Jurisdiction | SAN JOAQUIN CA |
| Township / Civil Division | TRACY |
| Census Block Group | 1 |
| Census Block | 1038 |
| Census Tract | 5406 |
20 Mount Oso Ave is owned and occupied by two individuals who acquired it in March 2026.
Source: San Joaquin County records, as of October 13, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 20 MOUNT OSO AVE, TRACY, CA 95376-4640 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Oct 31, 1997 · Amount on File |
| Deed Sale | Oct 31, 1997 · Amount on File |
| Prior Sale | Oct 17, 1996 · Amount on File |
| Deed Document Number | 1997108239 |
| Last Transfer Date | Mar 16, 2026 |
| Transfer Doc | 0000025214 |
| Record Updated | Oct 29, 2026 |
| Document Type | Correction Deed |
|---|---|
| Jurisdiction | SAN JOAQUIN CA |
| Recording Date | Mar 20, 2026 |
| Property Address | 20 MOUNT OSO AVE, TRACY, CA 95376-4640 |
| Document Number | 0000025214 |
| Map Reference | VOL 31 PG 94 |
| Instrument Date | Mar 16, 2026 |
| Instrument | 2026-025214 |
| Record Updated | Apr 7, 2026 |
| Title Company | OLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants |
| Address | 20 MOUNT OSO AVE, TRACY, CA 95376-4640 |
| Document Number | 0000025215 |
|---|---|
| Date | Mar 20, 2026 |
| Instrument | 2026-025215 |
| Name | ROCKET MORTGAGE LLC |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 241 Months |
| Due | Apr 1, 2046 |
The 2026 property tax bill for 20 Mount Oso Ave was $4,224 with a homeowner's exemption, up 0.1% from the year before.
Source: San Joaquin County assessment roll, as of September 24, 2025
| Type | Name |
|---|---|
| State | California |
| County | San Joaquin County |
| Municipality | Tracy City |
| Unified School District | Tracy Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $4,224.00 (+0.09%) | ||
| 2025 | $4,220.00 Homeowner's exemption | $353,459 Land $79,831 Building $273,628 | |
| 2023 | $3,834.00 (+2.16%) Homeowner's exemption | $339,735 Land $76,732 Building $263,003 | $575,010 |
| 2022 | $3,753.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 20 Mount Oso Ave in Zone X, an area of minimal flood risk.
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 | 1 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.
The area around 20 Mount Oso Ave has no burnable land within ember reach, so its wildfire risk is not rated.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within ember reach |
|---|
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | CITY OF TRACY serves 98,215 people · EPA ID CA3910011 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Nov 2025 |
| Lead | Under 1 ppb (2022–2024) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | None last 3 years |
Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.
Source: FCC Broadband Data Collection, based on 648 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Matrix Broadband Fixed Wireless | 600 / 120 |
| unWired Broadband Fixed Wireless | 400 / 50 |
| Verizon Fixed Wireless | 300 / 20 |
| Cal.net Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless · DSL · Fiber in parts of the area | 100 / 20 |
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