San Mateo County property record for 66 Rittenhouse Ave, Atherton, CA 94027
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2 ba · 2,381 sqft · built 1946 |
| Lot Size | 0.348 acres (15,161 sqft) |
| Owner | Individual Name on Record |
| Last Sale | $4,200,000 (Nov 2023) |
| Tax Bill | $48,126 (2025) |
| Deeds & Mortgages | Nov 2023 Sale Nov 2023 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 060-303-010 |
| Primary APN | 060-303-010 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 9 Rooms |
| Stories | 1 Story |
| Building Area | 2,381 sqft Living Area |
| 1st Floor Area | 1,322 sqft |
| Family Room | Family Room |
| Study | Study |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1946 |
|---|---|
| Effective Year Built | Effective 1946 |
| Architectural Style | Ranch |
| Exterior Material | Wood |
| Construction Type | Wood |
| Roof Material | Tar & Gravel |
| Lot Area | 15,161 sqft (0.348 acres) |
| Lot Dimensions | 168 ft deep x 90 ft wide |
| Garage Type | Detached |
| Garage Area | 370 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 66 RITTENHOUSE AVE |
|---|---|
| City | ATHERTON |
| State | CA |
| Zip | 94027-3836 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R11A00 |
| Legal Description | LOT 6 BLOCK 2 LLOYDEN PARK RSM 16/29 30 TOWN OF ATHERTON |
| Legal Subdivision | LLOYDEN PARK |
| Legal Block | 2 |
| Legal Lot Number | 6 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 2 |
| Census Block | 2017 |
| Census Tract | 611500 |
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 | Individual Name on Record |
|---|---|
| Mailing Address | 66 RITTENHOUSE AVE, ATHERTON, CA 94027-3836 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Date | Document |
|---|---|
| Nov 28, 2023 | Grant Deed, Transfer LAWYERS TITLE COMPANY/CA, LAWYERS TITLE COMPANY |
| Nov 28, 2023 | Intrafamily Transfer, Transfer LAWYERS TITLE COMPANY/CA, LAWYERS TITLE COMPANY |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Nov 28, 2023 · Amount on Record |
| Deed Sale | Nov 28, 2023 · Amount on Record |
| Prior Sale | Oct 5, 2016 · Amount on Record |
| Deed Document Number | 202362760 |
| Prior Transfer Date | Jan 9, 1997 |
| Prior Transfer Doc | 0000005147 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Nov 28, 2023 |
| Property Address | 66 RITTENHOUSE AVE, ATHERTON, CA 94027-3836 |
| Document Number | 0000062760 |
| Map Reference | MB 16 PG 29&30 |
| Instrument Date | Nov 20, 2023 |
| Instrument | 2023-062760 |
| Transaction Type | Transfer |
| Record Updated | Dec 28, 2023 |
| Title Company | LAWYERS TITLE COMPANY/CA, LAWYERS TITLE COMPANY |
| Amount | Amount Recorded |
|---|---|
| Tax | $4,620.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 66 RITTENHOUSE AVE, ATHERTON, CA 94027-3836 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Nov 28, 2023 |
| Property Address | 66 RITTENHOUSE AVE, ATHERTON, CA 94027-3836 |
| Document Number | 0000062761 |
| Map Reference | MB 16 PG 29&30 |
| Instrument Date | Nov 20, 2023 |
| Instrument | 2023-062761 |
| Transaction Type | Transfer |
| Record Updated | Dec 28, 2023 |
| Title Company | LAWYERS TITLE COMPANY/CA, LAWYERS TITLE COMPANY |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 66 RITTENHOUSE AVE, ATHERTON, CA 94027-3836 |
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 | Redwood 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 | $4,369,680 (+2%) Land $4,005,540 Building $364,140 | ||
| 2025 | $48,126.00 (+23.76%) | $4,284,000 (+25.91%) Land $3,927,000 Building $357,000 | |
| 2023 | $38,886.00 (+4.93%) | $3,402,329 Land $2,654,933 Building $747,396 | $3,655,800 |
| 2022 | $37,059.00 |
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 |
| 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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 98% of the US · lower than 98.4% of California |
|---|---|
| Wildfire Likelihood | 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 487 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · DSL · Fixed Wireless in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Astound Broadband, GeoLinks, Race Communications, Sonic Telecom.
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