San Mateo County property record for 49 Rittenhouse Ave, Atherton, CA 94027
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 3,300 sqft · built 1937 |
| Lot Size | 0.333 acres (14,517 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $3,800,000 (Mar 2024) |
| Tax Bill | $29,862 (2025) |
| Deeds & Mortgages | Mar 2024 Transfer Mar 2024 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 060-293-060 |
| Primary APN | 060-293-060 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 10 Rooms |
| Stories | 2 Stories |
| Building Area | 3,300 sqft Living Area |
| Gross Area | 3,990 sqft |
| 1st Floor Area | 1,280 sqft |
| 2nd Floor Area | 2,020 sqft |
| Basement Area | 690 sqft |
| Family Room | Family Room |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1937 |
|---|---|
| Effective Year Built | Effective 1937 |
| Architectural Style | Contemporary |
| Exterior Material | Stucco |
| Construction Type | Frame |
| Foundation Type | Concrete |
| Roof Material | Tar & Gravel |
| Lot Area | 14,517 sqft (0.333 acres) |
| Lot Dimensions | 146 ft deep x 96 ft wide |
| View / Lot | Corner |
| Garage Type | Basement |
| Garage Area | 690 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 49 RITTENHOUSE AVE |
|---|---|
| City | ATHERTON |
| State | CA |
| Zip | 94027-3835 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R11A00 |
| Legal Description | LOT 6 BLOCK 3 LLOYDEN PARK RSM 16/29 30 TOWN OF ATHERTON |
| Legal Subdivision | LLOYDEN PARK |
| Legal Block | 3 |
| Legal Lot Number | 6 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 2 |
| Census Block | 2012 |
| Census Tract | 611500 |
49 Rittenhouse Ave is held in a trust since March 2024.
Source: San Mateo County records, as of July 15, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 49 RITTENHOUSE AVE, ATHERTON, CA 94027-3835 |
| 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 |
|---|---|
| Mar 5, 2024 | Intrafamily Transfer, Transfer CHICAGO TITLE COMPANY |
| Mar 5, 2024 | Grant Deed, Transfer · Conventional Mortgage PMAC LENDING SERVICES INC |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Mar 5, 2024 · Amount on File |
| Deed Sale | Mar 5, 2024 · Amount on File |
| Prior Sale | Sep 28, 2006 · Amount on File |
| Deed Document Number | 202411886 |
| Prior Transfer Date | Oct 23, 2002 |
| Prior Transfer Doc | 0000226614 |
| Record Updated | Oct 29, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Mar 5, 2024 |
| Property Address | 49 RITTENHOUSE AVE, ATHERTON, CA 94027-3835 |
| Document Number | 0000011885 |
| Map Reference | MB 16 PG 29&30 |
| Instrument Date | Dec 19, 2023 |
| Instrument | 2024-011885 |
| Transaction Type | Transfer |
| Record Updated | Mar 26, 2024 |
| Title Company | CHICAGO TITLE COMPANY |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 81-6TH FLOOR BLUE POOL RD FL BLUE, BLUE, HAPPY VALLEY XX |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Mar 5, 2024 |
| Property Address | 49 RITTENHOUSE AVE, ATHERTON, CA 94027-3835 |
| Document Number | 0000011886 |
| Map Reference | MB 16 PG 29&30 |
| Instrument Date | Dec 19, 2023 |
| Instrument | 2024-011886 |
| Transaction Type | Transfer |
| Record Updated | Mar 26, 2024 |
| Title Company | CHICAGO TITLE COMPANY |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $4,180.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property with Right of Survivorship |
| Address | 1246 EL CAMINO REAL, MENLO PARK, CA 94025-4209 |
| Document Number | 0000011887 |
|---|---|
| Date | Mar 5, 2024 |
| Instrument | 2024-011887 |
| Name | PMAC LENDING SERVICES INC |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Apr 1, 2054 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 7.62% |
| Type Change Date | Apr 1, 2031 |
| Change Frequency | 6 Months |
| Min Rate At Change | 7.62% |
| Max Rate At Change | 12.6% |
| Margin | 4 |
| Max Rate | 12.6% |
The 2025 property tax bill for 49 Rittenhouse Ave was $29,862.
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 | $2,674,080 (+2%) Land $2,121,967 Building $552,113 | ||
| 2025 | $29,862.00 Homeowner's exemption | $2,621,649 Land $2,080,361 Building $541,288 | |
| 2023 | $31,785.00 (+4.93%) Homeowner's exemption | $2,768,682 Land $2,189,195 Building $579,487 | $5,568,390 |
| 2022 | $30,293.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 49 Rittenhouse Ave 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 49 Rittenhouse Ave is low, with 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 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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