San Mateo County property record for 83 Alejandra Ave, Atherton, CA 94027
| Property Type | Single Family Home |
|---|---|
| Details | 6 bd · 8.5 ba · 8,993 sqft · built 2012 |
| Lot Size | 0.978 acres (42,583 sqft) |
| Owner | Company Name on Record |
| Last Sale | $15,300,000 (May 2012) |
| Tax Bill | $214,453 (2025) |
| Deeds & Mortgages | Feb 2017 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 070-354-050 |
| Primary APN | 070-354-050 |
|---|
| Bedrooms | 6 Beds |
|---|---|
| Full Baths | 8.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 18 Rooms |
| Stories | 2 Stories |
| Building Area | 8,993 sqft Living Area |
| Gross Area | 9,384 sqft |
| 1st Floor Area | 3,490 sqft |
| 2nd Floor Area | 2,961 sqft |
| Basement Area | 2,933 sqft |
| Finished Basement | 2,542 sqft |
| Unfinished Basement | 391 sqft |
| Family Room | Family Room |
| Study | Study |
| Fireplaces | 3 Fireplaces |
| Fireplace | Fireplace |
| Year Built | Built 2012 |
|---|---|
| Effective Year Built | Effective 2012 |
| Architectural Style | Ranch |
| Exterior Material | Wood |
| Roof Material | Wood Shingle |
| Lot Area | 42,583 sqft (0.978 acres) |
| Lot Dimensions | 284 ft deep x 150 ft wide |
| Garage Area | 748 sqft |
| Parking Spaces | 3 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 83 ALEJANDRA AVE |
|---|---|
| City | ATHERTON |
| State | CA |
| Zip | 94027-4106 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1001A |
| Legal Description | LOT 27 THOMPSONS SUB VALPARAISO PARK RSM 3/76 TOWN OF ATHERTON |
| Legal Subdivision | PARAISO PARK |
| Legal Lot Number | 27 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 1 |
| Census Block | 1010 |
| 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 | PO BOX 2548, SAN FRANCISCO, CA 94126-2548 |
| Owner Type | Company |
| Vesting | Company |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | May 1, 2012 · Amount on Record |
| Deed Sale | May 1, 2012 · Amount on Record |
| Prior Sale | Aug 20, 2008 · Amount on Record |
| Deed Document Number | 201260804 |
| Prior Transfer Date | Jun 7, 2007 |
| Prior Transfer Doc | 0000087876 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Property Address | 83 ALEJANDRA AVE, ATHERTON, CA 94027-4106 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Title Company | FIRST AMERICAN TITLE COMPANY |
| Name | Verified Name |
|---|
| Document Number | 0000017144 |
|---|---|
| Date | Feb 24, 2017 |
| Instrument | 2017-017144 |
| Name | FIRST REPUBLIC BANK |
|---|---|
| Type | Bank |
| Address | SAN FRANCISCO, CA 94111 |
| Type | ARM |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Mar 1, 2047 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 2.35% |
| Type Change Date | Mar 1, 2024 |
| Change Frequency | Monthly |
| Min Rate At Change | 2.35% |
| Max Rate At Change | 9.95% |
| Index | 1-Month LIBOR |
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 | $19,761,135 (+2%) Land $9,801,010 Building $9,960,125 | |
| 2025 | $214,453.00 (+4.76%) | $19,373,664 (+4.04%) Land $9,608,834 Building $9,764,830 |
| 2023 | $204,711.00 (+2.41%) | $18,621,364 Land $9,235,712 Building $9,385,652 |
| 2022 | $199,900.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
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 | 2 in force |
| Nearby Flood Claims | 2 (1998) |
| Claims Outside the SFHA | 2 of 2 |
| Most Recent Claim | Feb 1998 · Severe Winter Storms And Flooding |
| Claims by Event |
|
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 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 253 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL · Fiber, Fixed Wireless in parts of the area | 100 / 20 |
May also be available: GeoLinks, Race Communications, Sonic Telecom.
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