Alameda County property record for 255 Mortimer Ave, Fremont, CA 94536
| Property Type | Single Family Home |
|---|---|
| Details | 1,409 sqft · built 1977 |
| Lot Size | 0.123 acres (5,335 sqft) |
| Owner | Trust Name on File |
| Tax Bill | $6,260 (2025) |
| Deeds & Mortgages | May 2019 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 507-435-39 |
| Primary APN | 507-435-39 |
|---|---|
| Alternative APN |
|
| Building Area | 1,409 sqft Living Area |
|---|
| Year Built | Built 1977 |
|---|---|
| Effective Year Built | Effective 1979 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 5,335 sqft (0.123 acres) |
| Street Address | 255 MORTIMER AVE |
|---|---|
| City | FREMONT |
| State | CA |
| Zip | 94536-4316 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00136 BLK: TR: 3562 |
| Legal Tract | 3562 |
| Legal Lot Number | 146 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | FREMONT |
| Census Block Group | 2 |
| Census Block | 2009 |
| Census Tract | 441924 |
255 Mortimer Ave is owner-occupied and held in a trust since April 2019.
Source: Alameda County records, as of August 5, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 255 MORTIMER AVE, FREMONT, CA 94536-4316 |
| 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.
| Deed Names | Name on Deed |
|---|---|
| Last Transfer Date | Apr 24, 2019 |
| Transfer Doc | 0000085323 |
| Record Updated | Sep 20, 2026 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | May 8, 2019 |
| Property Address | 255 MORTIMER AVE, FREMONT, CA 94536-4316 |
| Document Number | 0000085323 |
| Instrument Date | Apr 24, 2019 |
| Instrument | 85323 |
| Transaction Type | Transfer |
| Record Updated | May 21, 2019 |
| Title Company | ATTORNEY ONLY |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Revocable Trust |
| Address | 255 MORTIMER AVE FREMONT CA 945364316, FREMONT, CA 94536-4316 |
The 2025 property tax bill for 255 Mortimer Ave was $6,260 with a homeowner's exemption.
Source: Alameda County assessment roll, as of August 5, 2026
| Type | Name |
|---|---|
| State | California |
| County | Alameda County |
| Municipality | Fremont City |
| Unified School District | Fremont Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $476,693 (+0.52%) Land $145,108 Building $338,585 | ||
| 2025 | $6,260.00 Homeowner's exemption | $474,210 Land $142,263 Building $331,947 | |
| 2023 | $5,836.00 Homeowner's exemption | $455,798 Land $136,739 Building $319,059 | $1,301,040 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 255 Mortimer Ave in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective May 25, 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 255 Mortimer Ave 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 | ALAMEDA COUNTY WATER DISTRICT serves 344,000 people · EPA ID CA0110001 |
|---|---|
| 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 783 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable · Fiber in parts of the area | 2,000 / 2,000 |
| Tekify Fiber & Wireless Fixed Wireless | 1,000 / 1,000 |
| Verizon Fixed Wireless | 1,000 / 75 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| AT&T Fixed Wireless · Fiber, DSL in parts of the area | 100 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: GeoLinks, Sail Internet.
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