San Mateo County property record for 278 Park Ln, Atherton, CA 94027
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 5.5 ba · 9,149 sqft · built 2000 |
| Lot Size | 1.09 acres (47,590 sqft) |
| Owner | Company Name on File |
| Last Sale | $2,675,000 (Jul 1998) |
| Tax Bill | $72,894 (2025) |
| Deeds & Mortgages | Dec 2021 Line of Credit Dec 2021 Mortgage + 1 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 070-341-060 |
| Primary APN | 070-341-060 |
|---|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 5.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 15 Rooms |
| Stories | 2 Stories |
| Building Area | 9,149 sqft Living Area |
| 1st Floor Area | 3,270 sqft |
| 2nd Floor Area | 2,730 sqft |
| Basement Area | 2,230 sqft |
| Finished Basement | 2,230 sqft |
| Family Room | Family Room |
| Study | Study |
| Year Built | Built 2000 |
|---|---|
| Effective Year Built | Effective 2000 |
| Lot Area | 47,590 sqft |
| Lot Dimensions | 280 ft deep x 170 ft wide |
| Garage Area | 920 sqft |
| Parking Spaces | 4 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 278 PARK LN |
|---|---|
| City | ATHERTON |
| State | CA |
| Zip | 94027-5457 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1001A |
| Legal Description | 1.09 AC MOL BEING NE COR OF LOT 22 & NWLY 20 FT OF LOT 23 QUILLOTA TRACT RSM 3/60 TOWN OF ATHERTON |
| Legal Subdivision | QUILLOTA TRACT |
| Legal Lot Number | 22,23 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 2 |
| Census Block | 2004 |
| Census Tract | 611400 |
278 Park Ln is owned by a company that bought it in July 1998.
Source: San Mateo County records, as of July 15, 2026
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 3 LAGOON DR, 400, REDWOOD CITY, CA 94065-5157 |
| Owner Type | Company |
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 15, 2021 | Deed of Trust, Mortgage · Line of Credit FIRST REPUBLIC BANK |
| Dec 15, 2021 | Deed of Trust, Mortgage · Conventional Mortgage FIRST REPUBLIC BANK |
| Oct 14, 2020 | Quit Claim Deed, Transfer ATTORNEY ONLY |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jul 1, 1998 · Amount on File |
| Deed Sale | Jul 1, 1998 · Amount on File |
| Deed Document Number | 1998104207 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Property Address | 278 PARK LN, ATHERTON, CA 94027-5457 |
| Transaction Type | Mortgage |
| Record Updated | Jan 4, 2022 |
| Title Company | FIRSTAMERICAN TITLE COMPANY, FIRST AMERICAN TITLE COMPANY |
| Name | Verified Name |
|---|---|
| Address | 3 LAGOON DR 400, 400, REDWOOD CITY, CA 94065-5157 |
| Document Number | 0000170306 |
|---|---|
| Date | Dec 15, 2021 |
| Instrument | 2021-170306 |
| Name | FIRST REPUBLIC BANK |
|---|---|
| Type | Bank |
| Address | SAN FRANCISCO, CA 94111 |
| Type | Line of Credit |
|---|---|
| Amount | Amount on Record |
| Term | 300 Months |
| Due | Dec 26, 2046 |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Property Address | 278 PARK LN, ATHERTON, CA 94027-5457 |
| Transaction Type | Mortgage |
| Record Updated | Jan 4, 2022 |
| Title Company | FIRSTAMERICAN TITLE COMPANY, FIRST AMERICAN TITLE COMPANY |
| Name | Verified Name |
|---|---|
| Address | 278 AND 282 PARK LANE, ATHERTON, CA 94027-5457 |
| Document Number | 0000170305 |
|---|---|
| Date | Dec 15, 2021 |
| Instrument | 2021-170305 |
| Name | FIRST REPUBLIC BANK |
|---|---|
| Type | Bank |
| Address | SAN FRANCISCO, CA 94111 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 181 Months |
| Due | Jan 1, 2037 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Oct 14, 2020 |
| Property Address | 278 PARK LN, ATHERTON, CA 94027-5457 |
| Document Number | 0000111201 |
| Instrument Date | Aug 25, 2020 |
| Instrument | 111201 |
| Transaction Type | Transfer |
| Record Updated | Nov 13, 2020 |
| Title Company | ATTORNEY ONLY |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Company |
| Address | 3 LAGOON DR #400 REDWOOD CITY CA 940655157, 400, REDWOOD CITY, CA 94065-5157 |
The 2025 property tax bill for 278 Park Ln was $72,894, up 7.9% from the year before.
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 |
|---|---|---|
| 2026 | $8,644,683 (+35.03%) Land $4,277,548 Building $4,367,135 | |
| 2025 | $72,894.00 (+7.89%) | $6,402,063 Land $4,193,675 Building $2,208,388 |
| 2024 | $67,563.00 (-7.19%) | |
| 2023 | $72,795.00 (+2.43%) | $6,454,227 Land $4,030,831 Building $2,423,396 |
| 2022 | $71,071.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 278 Park Ln in Zone X, an area of minimal flood risk, though there have been 2 flood claims nearby since 1995.
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 |
| Flood Insurance Cost | Premium on File median of 13 policies |
| Nearby Flood Policies | 13 in force |
| Nearby Flood Claims | 2 (1995–1998) |
| Claims Outside the SFHA | 1 of 2 |
| Most Recent Claim | Feb 1998 · Severe Winter Storms And Flooding |
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 278 Park 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 94% of the US · lower than 96% of California |
|---|---|
| Wildfire Likelihood | Under 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 | 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 126 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 in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
May also be available: Cruzio, Etheric Networks, T-Mobile.
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