Alameda County property record for 4750 Mason St, Pleasanton, CA 94588
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2 ba · 1,816 sqft · built 1975 |
| Lot Size | 0.149 acres (6,501 sqft) |
| Owner | Trust Name on File |
| Last Sale | $730,000 (May 2005) |
| Tax Bill | $11,914 (2025) |
| Deeds & Mortgages | Dec 2018 Transfer Dec 2018 Line of Credit |
| Flood Zone | Zone X (moderate risk) |
| APN | 941-1305-77 |
| Primary APN | 941-1305-77 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 1,816 sqft Living Area |
| Year Built | Built 1975 |
|---|---|
| Effective Year Built | Effective 1977 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 6,501 sqft (0.149 acres) |
| Street Address | 4750 MASON ST |
|---|---|
| City | PLEASANTON |
| State | CA |
| Zip | 94588-3850 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00043 BLK: TR: 3311 |
| Legal Subdivision | TR 3311 |
| Legal Tract | 3311 |
| Legal Lot Number | 43 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | LIVERMORE-PLEASANTON |
| Census Block Group | 4 |
| Census Block | 4018 |
| Census Tract | 450603 |
4750 Mason St is owner-occupied and held in a trust since October 2018.
Source: Alameda County records, as of August 5, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 4750 MASON ST, PLEASANTON, CA 94588-3850 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Date | Document |
|---|---|
| Dec 11, 2018 | Quit Claim Deed, Transfer SERVICELINK |
| Dec 11, 2018 | Quit Claim Deed, Transfer · Line of Credit UNCLE CU |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | May 19, 2005 · Amount on File |
| Deed Sale | May 19, 2005 · Amount on File |
| Deed Document Number | 2005206418 |
| Last Transfer Date | Oct 15, 2018 |
| Transfer Doc | 0000234405 |
| Record Updated | Oct 29, 2026 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Dec 11, 2018 |
| Property Address | 4750 MASON ST, PLEASANTON, CA 94588-3850 |
| Document Number | 0000234405 |
| Instrument Date | Oct 15, 2018 |
| Instrument | 234405 |
| Transaction Type | Transfer |
| Record Updated | Dec 28, 2018 |
| Title Company | SERVICELINK |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Personal Trust |
| Address | 4750 MASON ST PLEASANTON CA 945883850, PLEASANTON, CA 94588-3850 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Dec 11, 2018 |
| Property Address | 4750 MASON ST, PLEASANTON, CA 94588-3850 |
| Document Number | 0000234403 |
| Instrument Date | Oct 15, 2018 |
| Instrument | 234403 |
| Transaction Type | Transfer |
| Record Updated | Dec 28, 2018 |
| Title Company | SERVICELINK |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property |
| Address | 4750 MASON ST PLEASANTON CA 945883850, PLEASANTON, CA 94588-3850 |
| Document Number | 234404 |
|---|---|
| Date | Dec 11, 2018 |
| Instrument | 234404 |
| Name | UNCLE CU |
|---|---|
| Type | Credit Union |
| Address | LIVERMORE, CA 94551 |
| Type | Line of Credit |
|---|---|
| Amount | Amount on Record |
| Term | 300 Months |
| Due | Dec 10, 2043 |
| Rate Type | Adjustable Rate |
|---|
The 2025 property tax bill for 4750 Mason St was $11,914 with a homeowner's exemption.
Source: Alameda County assessment roll, as of August 5, 2026
| Type | Name |
|---|---|
| State | California |
| County | Alameda County |
| Municipality | Pleasanton City |
| Unified School District | Pleasanton Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $1,030,804 (+1.31%) Land $311,341 Building $726,463 | ||
| 2025 | $11,914.00 Homeowner's exemption | $1,017,458 Land $305,237 Building $712,221 | |
| 2023 | $11,541.00 Homeowner's exemption | $977,958 Land $293,387 Building $684,571 | $1,202,400 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 4750 Mason St in Zone X, an area of moderate flood risk, though there have been 3 flood claims nearby since 1983.
Source: FEMA National Flood Hazard Layer, effective May 25, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X moderate risk |
|---|---|
| 500-Year Floodplain | Yes 0.2% annual chance |
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 7 (15% premium discount) |
| Nearby Flood Policies | 4 in force |
| Nearby Flood Claims | 3 (1983–1992) |
| Claims Outside the SFHA | 1 of 3 |
| Most Recent Claim | Aug 1992 · other causes |
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.
Wildfire risk around 4750 Mason 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 80% of the US · lower than 88% 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 PLEASANTON serves 76,689 people · EPA ID CA0110008 |
|---|---|
| Water Source | Purchased surface water from ZONE 7 WATER AGENCY |
| Last State Inspection | May 2024 |
| Lead | Under 1 ppb (2023–2025) 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 629 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| AT&T Fixed Wireless · DSL | 100 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
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