San Mateo County property record for 86 Kilroy Way, Atherton, CA 94027
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 4.5 ba · 5,775 sqft · built 2021 |
| Lot Size | 1.12 acres (49,021 sqft) |
| Owner | Company Name on Record |
| Last Sale | $440,000 (Nov 2010) |
| Tax Bill | $109,442 (2025) |
| Deeds & Mortgages | Jul 2020 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 070-032-070 |
| Primary APN | 070-032-070 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 4.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 12 Rooms |
| Stories | 1 Story |
| Building Area | 5,775 sqft Living Area |
| Gross Area | 6,610 sqft |
| 1st Floor Area | 5,775 sqft |
| Basement Area | 835 sqft |
| Family Room | Family Room |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 2021 |
|---|---|
| Effective Year Built | Effective 2021 |
| Architectural Style | Ranch |
| Exterior Material | Stucco |
| Construction Type | Frame |
| Roof Material | Wood Shingle |
| Lot Area | 49,021 sqft |
| Garage Area | 1,200 sqft |
| Parking Spaces | 5 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 86 KILROY WAY |
|---|---|
| City | ATHERTON |
| State | CA |
| Zip | 94027-5405 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1001A |
| Legal Description | LOT 6 ALLEN SUB RSM 39/26 TOWN OF ATHERTON |
| Legal Subdivision | ALLEN SUB |
| Legal Lot Number | 6 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 3 |
| Census Block | 3003 |
| Census Tract | 611400 |
Source: San Mateo County records, as of July 15, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Company Name on Record |
|---|---|
| Mailing Address | 9 ISABELLA AVE, ATHERTON, CA 94027-4031 |
| Owner Type | Company |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Nov 30, 2010 · Amount on Record |
| Deed Sale | Nov 30, 2010 · Amount on Record |
| Prior Sale | Aug 19, 2010 · Amount on Record |
| Deed Document Number | 2010145013 |
| Last Transfer Date | Jun 29, 2020 |
| Transfer Doc | 0000073067 |
| Record Updated | Oct 29, 2026 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Jul 28, 2020 |
| Property Address | 86 KILROY WAY, ATHERTON, CA 94027-5405 |
| Document Number | 0000073067 |
| Instrument Date | Jun 29, 2020 |
| Instrument | 73067 |
| Transaction Type | Transfer |
| Record Updated | Aug 20, 2020 |
| Title Company | FIDELITY NATIONAL TITLE |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Company |
| Address | 720 MONTAGUE EXPY MILPITAS CA 950356816, MILPITAS, CA 95035-6816 |
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 | Las Lomitas Elementary School District (KG - 08) |
| Secondary School District | Sequoia Union High School District (09 - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $9,964,604 (+2%) Land $5,161,856 Building $4,802,748 | ||
| 2025 | $109,442.00 (+1.23%) | $9,769,222 (+4.04%) Land $5,060,644 Building $4,708,578 | |
| 2024 | $108,111.00 (+1.6%) | ||
| 2023 | $106,411.00 (+2.86%) | $9,389,874 Land $4,864,134 Building $4,525,740 | $7,412,400 |
| 2022 | $103,455.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
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 Record median of 10 policies |
| Nearby Flood Policies | 10 in force |
| Nearby Flood Claims | 1 (2022) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Dec 2022 · Severe Winter Storms, Flooding, Landslides, And Mudslides |
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.
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 | 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 136 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.
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