San Mateo County property record for 18 McCormick Ln, Atherton, CA 94027
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3.5 ba · 3,240 sqft · built 1979 |
| Lot Size | 1.11 acres (48,524 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $2,218,000 (Sep 1998) |
| Tax Bill | $43,020 (2025) |
| Deeds & Mortgages | Feb 2017 Mortgage Feb 2017 Line of Credit |
| Flood Zone | Zone X (minimal risk) |
| APN | 060-244-090 |
| Primary APN | 060-244-090 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 9 Rooms |
| Stories | 2 Stories |
| Building Area | 3,240 sqft Living Area |
| 1st Floor Area | 2,000 sqft |
| 2nd Floor Area | 1,240 sqft |
| Family Room | Family Room |
| Study | Study |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1979 |
|---|---|
| Effective Year Built | Effective 1979 |
| Architectural Style | Colonial |
| Exterior Material | Wood Siding |
| Construction Type | Frame |
| Roof Material | Wood Shingle |
| Lot Area | 48,524 sqft |
| Lot Dimensions | 6,784 ft deep x 6,784 ft wide |
| Garage Area | 890 sqft |
| Parking Spaces | 4 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 18 MCCORMICK LN |
|---|---|
| City | ATHERTON |
| State | CA |
| Zip | 94027-3034 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1001A |
| Legal Description | PARCEL 2 1.113 AC MOL PARCEL MAP VOL 34/33 |
| Legal Subdivision | VILLA LOTS FAIR OAKS |
| Legal Lot Number | 2 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 2 |
| Census Block | 2008 |
| Census Tract | 611500 |
18 McCormick Ln is owner-occupied and held in a trust since September 2005.
Source: San Mateo County records, as of July 15, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 18 MCCORMICK LN, MS11, ATHERTON, CA 94027-3034 |
| 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.
| Date | Document |
|---|---|
| Feb 23, 2017 | Deed of Trust, Mortgage · ARM FIRST REPUBLIC BANK |
| Feb 23, 2017 | Deed of Trust, Mortgage · Line of Credit FIRST REPUBLIC BANK |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Sep 30, 1998 · Amount on File |
| Deed Sale | Sep 30, 1998 · Amount on File |
| Prior Sale | Apr 9, 1996 · Amount on File |
| Deed Document Number | 1998157909 |
| Last Transfer Date | Sep 15, 2005 |
| Transfer Doc | 0000164909 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Property Address | 18 MCCORMICK LN, ATHERTON, CA 94027-3034 |
| Transaction Type | Mortgage |
| Record Updated | Aug 5, 2022 |
| Title Company | LAWYERS TITLE OF NORCAL |
| Name | Verified Name |
|---|
| Document Number | 0000016885 |
|---|---|
| Date | Feb 23, 2017 |
| Instrument | 2017-016885 |
| Name | FIRST REPUBLIC BANK |
|---|---|
| Type | Bank |
| Address | SAN FRANCISCO, CA 94111 |
| Type | ARM |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Mar 1, 2047 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 3.05% |
| Adjustable | Adjustable Rate Rider |
| Type Change Date | Mar 1, 2024 |
| Change Frequency | Monthly |
| Min Rate At Change | 2.75% |
| Index | 1-Month LIBOR |
| Max Rate | 9.95% |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Property Address | 18 MCCORMICK LN, ATHERTON, CA 94027-3034 |
| Transaction Type | Mortgage |
| Record Updated | Aug 5, 2022 |
| Title Company | LAWYERS TITLE OF NORCAL |
| Name | Verified Name |
|---|
| Document Number | 0000016886 |
|---|---|
| Date | Feb 23, 2017 |
| Instrument | 2017-016886 |
| Name | FIRST REPUBLIC BANK |
|---|---|
| Type | Bank |
| Address | SAN FRANCISCO, CA 94111 |
| Type | Line of Credit |
|---|---|
| Amount | Amount on Record |
| Term | 300 Months |
| Due | Feb 26, 2042 |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
The 2025 property tax bill for 18 McCormick Ln was $43,020 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 | $3,745,006 (+2%) Land $1,773,374 Building $1,971,632 | ||
| 2025 | $43,020.00 Homeowner's exemption | $3,671,575 Land $1,738,602 Building $1,932,973 | |
| 2023 | $41,004.00 (+2.45%) Homeowner's exemption | $3,529,006 Land $1,671,091 Building $1,857,915 | $4,843,620 |
| 2022 | $40,023.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 18 McCormick 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 18 McCormick 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 95% of the US · lower than 97% 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 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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