San Mateo County property record for 55 Serrano Dr, Atherton, CA 94027 · Last verified July 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bedrooms | 6 Beds |
| Bathrooms | 5 Baths |
| Year Built | Built 1935 |
| Square Footage | 3,990 sqft Living Area |
| Lot Size | 35,087 sqft (0.806 acres) |
| Garage | 610 sqft |
| Last Sale | $8,600,000 (2025) |
| Tax Bill | $4,745.00 (2025) |
| Primary APN | 059-283-120 |
|---|
| Bedrooms | 6 Beds |
|---|---|
| Full Baths | 5 Baths |
| Total Rooms | 10 Rooms |
| Building Area | 3,990 sqft Living Area |
| Gross Area | 4,240 sqft Gross Area |
| 1st Floor | 2,010 sqft 1st Floor |
| 2nd Floor | 1,650 sqft 2nd Floor |
| Basement Area | 250 sqft Basement |
| Family Room | Family Room |
| Stories | 2 Stories |
| Study | Study |
| Year Built | Built 1935 |
|---|---|
| Effective Year Built | Effective 1935 |
| Lot Area | 35,087 sqft (0.806 acres) |
| Depth X Width | 185 ft x 199 ft Depth x Width |
| Parking Spaces | 2 Parking Spaces |
| Garage Area | 610 sqft Garage |
| Cooling System | Central Cooling |
|---|---|
| Heating System | Central Heating |
| Street Address | 55 SERRANO DR |
|---|---|
| City | ATHERTON |
| State | CA |
| Zip | 94027-3961 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | LOT 12 BLOCK 3 ATHERTON OAKS RSM 16/10 11 TOWN OF ATHERTON |
| Legal Subdivision | ATHERTON OAKS |
| Legal Block | 3 |
| Legal Lot Number | 12 |
| Jurisdiction | SAN MATEO CA |
| Minor Civil Division | SAN MATEO |
| Census Blockgroup | 4 |
| Census Block | 4007 |
| Census Tract | 611400 |
Source: San Mateo County records · APN 059-283-120
Assessment roll updated July 15, 2026 · Last verified July 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 File |
|---|---|
| Mailing Address | 55 SERRANO DR, ATHERTON, CA 94027-3961 |
| Owner Type | Owner is a Company |
| Date | Document |
|---|---|
| Jun 21, 2017 | Deed of Trust, Mortgage · Conventional Mortgage MORGAN STANLEY PVT BK NA |
| Jun 27, 2017 | Quit Claim Deed, Transfer TRG SERVICES ESCROW INC, TRG SVCS ESCROW INC |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Jun 18, 2025 · Amount on Record |
| Deed Sale | Jun 18, 2025 · Amount on Record |
| Deed Doc Number | 202531034 |
| Prior Transfer Date | Jun 21, 2017 |
| Prior Transfer Doc | 0000054439 |
| Record Refreshed | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Property Address | 55 SERRANO DR, ATHERTON, CA 94027-3961 |
| Document Number | 0000054440 |
| Instrument Date | Jun 21, 2017 |
| Transaction Type | Mortgage |
| Record Updated | Nov 20, 2018 |
| Title Company | OTHER |
| Name | Verified Name |
|---|---|
| Relationship | Personal Trust |
| Address | 55 SERRANO DR ATHERTON CA 940273961, ATHERTON, CA 94027-3961 |
| Document Number | 0000054440 |
|---|---|
| Date | Jun 27, 2017 |
| Instrument | 54440 |
| Name | MORGAN STANLEY PVT BK NA |
|---|---|
| Type | Bank |
| Address | MOUNT LAUREL, NJ 08054 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Jun 26, 2047 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 3.93% |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Jun 27, 2017 |
| Property Address | 55 SERRANO DR, ATHERTON, CA 94027-3961 |
| Document Number | 0000054439 |
| Instrument Date | Jun 21, 2017 |
| Instrument | 54439 |
| Transaction Type | Transfer |
| Record Updated | Jan 03, 2018 |
| Title Company | TRG SERVICES ESCROW INC, TRG SVCS ESCROW INC |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Personal Trust |
| Address | 55 SERRANO DR ATHERTON CA 940273961, ATHERTON, CA 94027-3961 |
Source: San Mateo County records · Assessment roll updated July 15, 2026 · Last verified July 2026
| Type | Name |
|---|---|
| State | California |
| Municipality | Atherton Town |
| County | San Mateo County |
| Elementary School District | Redwood City Elementary School District (KG - 08) |
| Secondary School District | Sequoia Union High School District (09 - 12) |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $8,772,000 (+2,590.57%) Land $8,710,800 Building $61,200 | ||
| 2025 | $4,745.00 (+3.81%) Homeowner's exemption | $326,028 (+4.04%) Land $112,501 Building $213,527 | |
| 2023 | $4,571.00 (+4.65%) Homeowner's exemption | $313,371 Land $108,134 Building $205,237 | $7,018,650 |
| 2022 | $4,368.00 |
55 Serrano Dr is in FEMA Zone X, outside the Special Flood Hazard Area, with no wildfire exposure.
Source: FEMA National Flood Hazard Layer · San Mateo County (06081C), updated September 10, 2026
| FEMA Flood Zone | Zone X minimal flood hazard · outside the 0.2% annual chance floodplain |
|---|---|
| Special Flood Hazard Area | No |
Source: USDA Forest Service Wildfire Risk to Communities · 2nd edition (2024), fuels as of 2020
| Wildfire Risk to Homes | Not rated no burnable land in reach |
|---|---|
| Wildfire Likelihood | Negligible |
| Exposure | None beyond ember reach of burnable land |
Values are read at the parcel center point; lenders make the official flood determination.
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