San Mateo County property record for 340 Midvale Ave, San Mateo, CA 94403
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,500 sqft · built 1950 |
| Lot Size | 0.139 acres (6,069 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $640,000 (Feb 2011) |
| Tax Bill | $5,435 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 042-214-270 |
| Primary APN | 042-214-270 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 7 Rooms |
| Building Area | 1,500 sqft Living Area |
| 1st Floor Area | 1,080 sqft |
| Family Room | Family Room |
| Year Built | Built 1950 |
|---|---|
| Effective Year Built | Effective 1950 |
| Lot Area | 6,069 sqft (0.139 acres) |
| Lot Dimensions | 79 ft deep x 75 ft wide |
| Garage Type | Carport |
| Carport | Carport |
| Parking Spaces | 1 Parking Space |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 340 MIDVALE AVE |
|---|---|
| City | SAN MATEO |
| State | CA |
| Zip | 94403-5019 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10006 |
| Legal Description | LOT 21 BLOCK 26 SAN MATEO KNOLLS MAP NO 2 RSM 24/61 62 CITY OF SAN MATEO |
| Legal Subdivision | SAN MATEO KNOLLS MAP NO 2 |
| Legal Block | 26 |
| Legal Lot Number | 21 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 2 |
| Census Block | 2009 |
| Census Tract | 607100 |
340 Midvale Ave is owned and occupied by two individuals who bought it in February 2011.
Source: San Mateo County records, as of July 15, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 340 MIDVALE AVE, SAN MATEO, CA 94403-5019 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Feb 22, 2011 · Amount on File |
| Deed Sale | Feb 22, 2011 · Amount on File |
| Prior Sale | Jun 27, 2003 · Amount on File |
| Deed Document Number | 201120922 |
| Prior Transfer Date | Jun 21, 2005 |
| Prior Transfer Doc | 0000108783 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 340 Midvale Ave was $5,435 with a homeowner's exemption.
Source: San Mateo County assessment roll, as of July 15, 2026
| Type | Name |
|---|---|
| State | California |
| County | San Mateo County |
| Municipality | San Mateo City |
| Elementary School District | San Mateo-Foster City Elementary School District (KG - 08) |
| Secondary School District | San Mateo Union High School District (09 - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $337,715 (+2%) Land $248,612 Building $89,103 | ||
| 2025 | $5,435.00 Homeowner's exemption | $331,094 Land $243,738 Building $87,356 | |
| 2023 | $5,076.00 (-3.39%) Homeowner's exemption | $318,239 Land $234,274 Building $83,965 | $1,818,630 |
| 2022 | $5,254.00 |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
FEMA maps place 340 Midvale Ave in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective September 10, 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.
The area around 340 Midvale 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 | CALIFORNIA WATER SERVICE - SAN MATEO private · serves 103,536 people · EPA ID CA4110008 |
|---|---|
| Water Source | Purchased surface water from SAN FRANCISCO REGIONAL WATER SYSTEM |
| Last State Inspection | Mar 2025 |
| Lead | 4 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 891 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Sonic Telecom Fiber | 10,000 / 10,000 |
| AT&T Fiber · Fixed Wireless in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Etheric Networks Fixed Wireless | 250 / 100 |
May also be available: Astound Broadband, T-Mobile, Verizon.
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