San Mateo County property record for 220 Park Ln, Atherton, CA 94027
| Property Type | Single Family Home |
|---|---|
| Details | 6 bd · 7.5 ba · 12,865 sqft · built 2021 |
| Lot Size | 1.3 acres (56,875 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $12,400,000 (May 2017) |
| Tax Bill | $284,521 (2025) |
| Deeds & Mortgages | May 2017 Transfer May 2017 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 070-330-050 |
| Primary APN | 070-330-050 |
|---|
| Bedrooms | 6 Beds |
|---|---|
| Full Baths | 7.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 17 Rooms |
| Stories | 2 Stories |
| Building Area | 12,865 sqft Living Area |
| 1st Floor Area | 4,785 sqft |
| 2nd Floor Area | 2,981 sqft |
| Basement Area | 5,099 sqft |
| Finished Basement | 5,099 sqft |
| Family Room | Family Room |
| Year Built | Built 2021 |
|---|---|
| Effective Year Built | Effective 2021 |
| Lot Area | 56,875 sqft |
| Lot Dimensions | 352 ft deep x 171 ft wide |
| Garage Area | 858 sqft |
| Parking Spaces | 3 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 220 PARK LN |
|---|---|
| City | ATHERTON |
| State | CA |
| Zip | 94027-5411 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1001A |
| Legal Description | 1.398 ACS MOL OF LOT 12 QUILLOTA TRACT RSM 3/60 TOWN OF ATHERTON |
| Legal Subdivision | QUILLOTA TRACT |
| Legal Tract | 2 |
| Legal Lot Number | 12 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 2 |
| Census Block | 2000 |
| Census Tract | 611400 |
220 Park Ln is held in a trust since May 2017.
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 Trust Names on File |
|---|---|
| Mailing Address | 220 PARK LN, ATHERTON, CA 94027-5411 |
| Owner Type | Company |
| Vesting | Trust |
| Date | Document |
|---|---|
| May 1, 2017 | Affidavit of Death, Transfer LAWYERS TITLE |
| May 1, 2017 | Grant Deed, Transfer · ARM SILICON VALLEY BANK |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | May 1, 2017 · Amount on File |
| Deed Sale | May 1, 2017 · Amount on File |
| Deed Document Number | 201737411 |
| Prior Transfer Date | Jul 19, 1997 |
| Prior Transfer Doc | 0000101093 |
| Record Updated | Oct 29, 2026 |
| Document Type | Affidavit of Death |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | May 1, 2017 |
| Property Address | 220 PARK LN, ATHERTON, CA 94027-5411 |
| Document Number | 0000037410 |
| Instrument Date | Apr 26, 2017 |
| Instrument | 37410 |
| Transaction Type | Transfer |
| Record Updated | May 18, 2017 |
| Title Company | LAWYERS TITLE |
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 1788 KIMBERLY DR SUNNYVALE CA 940875231, SUNNYVALE, CA 94087-5231 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | May 1, 2017 |
| Property Address | 220 PARK LN, ATHERTON, CA 94027-5411 |
| Document Number | 0000037411 |
| Map Reference | MAP3 PG60 |
| Instrument Date | Apr 26, 2017 |
| Instrument | 2017-037411 |
| Transaction Type | Transfer |
| Record Updated | Aug 9, 2021 |
| Title Company | LAWYERS TITLE COMPANY |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $0.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Revocable Trust |
| Address | 130 GLORIA CIR, MENLO PARK, CA 94025-3558 |
| Document Number | 0000037412 |
|---|---|
| Date | May 1, 2017 |
| Instrument | 2017-037412 |
| Name | SILICON VALLEY BANK |
|---|---|
| Type | Bank |
| Type | ARM |
|---|---|
| Amount | Amount on Record |
| Term | 360 Months |
| Due | May 1, 2047 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 2.87% |
| Type Change Date | May 1, 2022 |
| Change Frequency | Annually |
| Min Rate At Change | 2.25% |
| Max Rate At Change | 4.87% |
| Index | 1-Year LIBOR |
| Max Rate | 8.87% |
The 2025 property tax bill for 220 Park Ln was $284,521.
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 | $26,310,164 (+2%) Land $14,619,898 Building $11,690,266 | |
| 2025 | $284,521.00 | $25,794,280 Land $14,333,234 Building $11,461,046 |
| 2023 | $271,620.00 (+2.4%) | $24,792,658 Land $13,776,658 Building $11,016,000 |
| 2022 | $265,243.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 220 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 220 Park Ln 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 96% of the US · lower than 97.4% of California |
|---|---|
| Wildfire Likelihood | 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 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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