San Mateo County property record for 73 Mount Vernon Ln, Atherton, CA 94027
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 3.5 ba · 3,783 sqft · built 1960 |
| Lot Size | 1 acre (43,563 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $2,475,000 (Aug 2012) |
| Tax Bill | $57,945 (2025) |
| Deeds & Mortgages | Oct 2021 Line of Credit Aug 2019 Line of Credit + 1 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 060-241-060 |
| Primary APN | 060-241-060 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 8 Rooms |
| Stories | 1 Story |
| Building Area | 3,783 sqft Living Area |
| 1st Floor Area | 3,351 sqft |
| Family Room | Family Room |
| Year Built | Built 1960 |
|---|---|
| Effective Year Built | Effective 1960 |
| Lot Area | 43,563 sqft |
| Lot Dimensions | 241 ft deep x 176 ft wide |
| Garage Area | 809 sqft |
| Parking Spaces | 3 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 73 MOUNT VERNON LN |
|---|---|
| City | ATHERTON |
| State | CA |
| Zip | 94027-3036 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1001A |
| Legal Description | LOT 6 FAIR OAKS ESTATES RSM 50/26 27 TOWN OF ATHERTON |
| Legal Subdivision | FAIR OAKS ESTATES |
| Legal Lot Number | 6 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 2 |
| Census Block | 2005 |
| Census Tract | 611500 |
73 Mount Vernon Ln is owned and occupied by two individuals who bought it in August 2012.
Source: San Mateo County records, as of July 15, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 73 MOUNT VERNON LN, ATHERTON, CA 94027-3036 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
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 |
|---|---|
| Oct 20, 2021 | Deed of Trust, Mortgage · Line of Credit FIRST REPUBLIC BANK |
| Aug 20, 2019 | Deed of Trust, Mortgage · Line of Credit FIRST REPUBLIC BANK |
| Apr 10, 2020 | Deed of Trust, Mortgage · Conventional Mortgage FIRST REPUBLIC BANK |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Aug 23, 2012 · Amount on File |
| Deed Sale | Aug 23, 2012 · Amount on File |
| Deed Document Number | 2012119918 |
| Prior Transfer Date | Jul 19, 1996 |
| Prior Transfer Doc | 0000092837 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Property Address | 73 MOUNT VERNON LN, ATHERTON, CA 94027-3036 |
| Transaction Type | Mortgage |
| Record Updated | Nov 16, 2021 |
| Title Company | FIRSTAMERICAN TITLE COMPANY, FIRST AMERICAN TITLE COMPANY |
| Name | Verified Name |
|---|---|
| Address | 73 MOUNT VERNON LN, ATHERTON, CA 94027-3036 |
| Document Number | 0000147663 |
|---|---|
| Date | Oct 20, 2021 |
| Instrument | 2021-147663 |
| Name | FIRST REPUBLIC BANK |
|---|---|
| Type | Bank |
| Address | SAN FRANCISCO, CA 94111 |
| Type | Line of Credit |
|---|---|
| Amount | Amount on Record |
| Term | 300 Months |
| Due | Oct 26, 2046 |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Property Address | 73 MOUNT VERNON LN, ATHERTON, CA 94027-3036 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Title Company | FIRST AMERICAN TITLE |
| Name | Verified Name |
|---|
| Document Number | 0000066388 |
|---|---|
| Date | Aug 20, 2019 |
| Instrument | 2019-066388 |
| Name | FIRST REPUBLIC BANK |
|---|---|
| Type | Bank |
| Address | SAN FRANCISCO, CA 94111 |
| Type | Line of Credit |
|---|---|
| Amount | Amount on Record |
| Term | 300 Months |
| Due | Aug 26, 2044 |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Property Address | 73 MOUNT VERNON LN, ATHERTON, CA 94027-3036 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Name | Verified Name |
|---|
| Document Number | 0000032774 |
|---|---|
| Date | Apr 10, 2020 |
| Instrument | 2020-032774 |
| Name | FIRST REPUBLIC BANK |
|---|---|
| Type | Bank |
| Address | SAN FRANCISCO, CA 94111 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | May 1, 2050 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 2.75% |
| Type Change Date | May 1, 2030 |
| Change Frequency | Monthly |
| Min Rate At Change | 2.95% |
| Index | 1-Year CMT |
| Max Rate | 10.9% |
The 2025 property tax bill for 73 Mount Vernon Ln was $57,945 with a homeowner's exemption.
Source: San Mateo County assessment roll, as of July 15, 2026
| Type | Name |
|---|---|
| State | California |
| Municipality | Atherton Town |
| County | San Mateo County |
| Elementary School District | Menlo Park City Elementary School District (KG - 08) |
| Secondary School District | Sequoia Union High School District (09 - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $5,168,494 (+2%) Land $3,045,934 Building $2,122,560 | ||
| 2025 | $57,945.00 Homeowner's exemption | $5,067,152 Land $2,986,210 Building $2,080,942 | |
| 2023 | $55,296.00 (+50.6%) Homeowner's exemption | $7,049,264 Land $2,870,252 Building $4,179,012 | $5,791,680 |
| 2022 | $36,716.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 73 Mount Vernon Ln in Zone X, an area of minimal flood risk.
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 | 4 in force |
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 73 Mount Vernon Ln is low, with less than 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 97% of the US · lower than 97.8% of California |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | Direct burnable vegetation |
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 - BEAR GULCH private · serves 60,382 people · EPA ID CA4110006 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Feb 2025 |
| Lead | 4 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 313 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Race Communications 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 |
| Verizon Fixed Wireless | 300 / 20 |
May also be available: Etheric Networks, GeoLinks, Sonic Telecom, T-Mobile.
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