San Mateo County property record for 420 Stephen Rd, San Mateo, CA 94403
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,780 sqft · built 1949 |
| Lot Size | 0.162 acres (7,036 sqft) |
| Owner | Trust Name on File |
| Tax Bill | $2,629 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 039-471-340 |
| Primary APN | 039-471-340 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 6 Rooms |
| Building Area | 1,780 sqft Living Area |
| 1st Floor Area | 1,490 sqft |
| Family Room | Family Room |
| Year Built | Built 1949 |
|---|---|
| Effective Year Built | Effective 1949 |
| Lot Area | 7,036 sqft (0.162 acres) |
| Lot Dimensions | 105 ft deep x 67 ft wide |
| Garage Area | 430 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 420 STEPHEN RD |
|---|---|
| City | SAN MATEO |
| State | CA |
| Zip | 94403-3353 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10006 |
| Legal Description | LOT 27 BLOCK 3 HILLSDALE UNIT NO 3 RSM 25/32 33 CITY OF SAN MATEO |
| Legal Subdivision | HILLSDALE UNIT NO 3 |
| Legal Block | 3 |
| Legal Lot Number | 27 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 2 |
| Census Block | 2014 |
| Census Tract | 607300 |
420 Stephen Rd is owner-occupied and held in a trust.
Source: San Mateo County records, as of July 15, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 420 STEPHEN RD, SAN MATEO, CA 94403-3353 |
| 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 |
|---|---|
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 420 Stephen Rd was $2,629 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 | $142,934 (+2%) Land $40,029 Building $102,905 | ||
| 2025 | $2,629.00 Homeowner's exemption | $140,133 Land $39,245 Building $100,888 | |
| 2023 | $2,385.00 (+0.42%) Homeowner's exemption | $134,693 Land $37,722 Building $96,971 | $2,000,160 |
| 2022 | $2,375.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 420 Stephen Rd in Zone X, an area of minimal flood risk, though there have been 4 flood claims nearby since 1998.
Source: FEMA National Flood Hazard Layer, effective September 10, 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 |
| Nearby Flood Policies | 2 in force |
| Nearby Flood Claims | 4 (1998–2022) |
| Claims Outside the SFHA | 4 of 4 |
| Most Recent Claim | Dec 2022 · rainfall accumulation |
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 420 Stephen Rd 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 716 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, DSL in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Astound Broadband Cable · Fiber in parts of the area | 1,500 / 50 |
May also be available: Etheric Networks, GeoLinks, T-Mobile.
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