San Joaquin County property record for 661 Prosperity St, Mountain House, CA 95391
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 3,182 sqft · built 2004 |
| Lot Size | 0.16 acres (6,970 sqft) |
| Owner | 2 Company Names on File |
| Last Sale | $344,000 (Sep 2010) |
| Tax Bill | $10,951 (2026) |
| Deeds & Mortgages | Mar 2023 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 254-090-380-000 |
| Primary APN | 254-090-380-000 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Stories | 2 Stories |
| Building Area | 3,182 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 2004 |
|---|---|
| Effective Year Built | Effective 2004 |
| Architectural Style | Custom Design |
| Construction Type | Wood |
| Lot Area | 6,970 sqft (0.16 acres) |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Old Parcel Number | 254-090-38 |
|---|---|
| Street Address | 661 PROSPERITY ST |
| City | TRACY |
| State | CA |
| Zip | 95391-1114 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | RL |
| Legal Description | LOT 64 |
| Legal Subdivision | MOUNTAIN HOUSE NEIGHBORHOOD F |
| Legal Block | 1 |
| Legal Lot Number | 64 |
| Jurisdiction | SAN JOAQUIN CA |
| Township / Civil Division | TRACY |
| Census Block Group | 1 |
| Census Block | 1010 |
| Census Tract | 5223 |
661 Prosperity St is owned by a company that bought it in September 2010 and is owner-occupied.
Source: San Joaquin County records, as of October 13, 2026
| Owner of Record | 2 Company Names on File |
|---|---|
| Mailing Address | 661 PROSPERITY ST, TRACY, CA 95391-1114 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Life Tenant |
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 | Sep 3, 2010 · Amount on File |
| Deed Sale | Sep 3, 2010 · Amount on File |
| Prior Sale | Nov 5, 2004 · Amount on File |
| Deed Document Number | 2010116017 |
| Prior Transfer Date | Jul 30, 2004 |
| Prior Transfer Doc | 0000171912 |
| Record Updated | Oct 29, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | SAN JOAQUIN CA |
| Recording Date | Mar 28, 2023 |
| Property Address | 661 PROSPERITY ST, MOUNTAIN HOUSE, CA 95391-1114 |
| Document Number | 0000024010 |
| Map Reference | MB 37 PG 50 |
| Instrument Date | Mar 28, 2023 |
| Instrument | 2023-024010 |
| Transaction Type | Transfer |
| Record Updated | Jun 7, 2023 |
| Title Company | PACIFIC COAST TITLE DIVISIO |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Revocable Living Trust |
| Address | 661 PROSPERITY ST, MOUNTAIN HOUSE, CA 95391-1114 |
The 2026 property tax bill for 661 Prosperity St was $10,951 with a homeowner's exemption, up 22.6% from the year before.
Source: San Joaquin County assessment roll, as of September 24, 2025
| Type | Name |
|---|---|
| State | California |
| County | San Joaquin County |
| Municipality | Mountain House City |
| Unified School District | Lammersville Joint Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $10,951.00 (+22.59%) | ||
| 2025 | $8,933.00 Homeowner's exemption | $440,713 Land $110,175 Building $330,538 | |
| 2023 | $8,543.00 (+2.34%) Homeowner's exemption | $423,601 Land $105,898 Building $317,703 | $1,030,860 |
| 2022 | $8,348.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 661 Prosperity St in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective September 27, 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
Wildfire risk around 661 Prosperity St is low, with a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 94% of the US · lower than 96% of California |
|---|---|
| Wildfire Likelihood | 0.01% 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: EPA Safe Drinking Water Information System, as of September 2026
| Water System | CITY OF MOUNTAIN HOUSE serves 26,400 people · EPA ID CA3910027 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Dec 2025 |
| Lead | Under 1 ppb (2025) 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 653 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Matrix Broadband Fixed Wireless | 400 / 80 |
| unWired Broadband Fixed Wireless | 400 / 50 |
| Cal.net Fixed Wireless | 100 / 20 |
| AT&T DSL · Fiber in parts of the area | 100 / 20 |
May also be available: Verizon.
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