San Mateo County property record for 817 Kathryne Ave, San Mateo, CA 94401
| Property Type | Single Family Home |
|---|---|
| Details | 6 bd · 3 ba · 2,590 sqft · built 1949 |
| Lot Size | 0.138 acres (6,000 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $1,040,000 (Aug 2015) |
| Tax Bill | $16,319 (2025) |
| Deeds & Mortgages | May 2026 Sale Mar 2021 Mortgage + 1 more |
| Flood Zone | Zone X (reduced by levee) |
| APN | 033-344-280 |
| Primary APN | 033-344-280 |
|---|
| Bedrooms | 6 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 13 Rooms |
| Stories | 1 Story |
| Building Area | 2,590 sqft Living Area |
| Gross Area | 2,830 sqft |
| 1st Floor Area | 820 sqft |
| Basement Area | 240 sqft |
| Family Room | Family Room |
| Study | Study |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1949 |
|---|---|
| Effective Year Built | Effective 1949 |
| Architectural Style | Bungalow |
| Exterior Material | Wood Siding |
| Construction Type | Frame |
| Roof Material | Tar & Gravel |
| Lot Area | 6,000 sqft (0.138 acres) |
| Lot Dimensions | 120 ft deep x 50 ft wide |
| Garage Type | Basement |
| Garage Area | 240 sqft |
| Parking Spaces | 1 Parking Space |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 817 KATHRYNE AVE |
|---|---|
| City | SAN MATEO |
| State | CA |
| Zip | 94401-3124 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R106 |
| Legal Description | LOT 17 BLOCK 15 SHORE VIEW TRACT MAP NO 8 RSM 30/25 26 27 28CITY OF SAN MATEO |
| Legal Subdivision | SHORE VIEW TRACT MAP NO 8 |
| Legal Block | 15 |
| Legal Lot Number | 17 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 2 |
| Census Block | 2003 |
| Census Tract | 607701 |
817 Kathryne Ave is owner-occupied and held in a trust since August 2015.
Source: San Mateo County records, as of July 15, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 817 KATHRYNE AVE, SAN MATEO, CA 94401-3124 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Date | Document |
|---|---|
| May 27, 2026 | Grant Deed, Transfer NONE LISTED ON DOCUMENT |
| Mar 4, 2021 | Deed of Trust, Mortgage · Conventional Mortgage SECURE ONE CAPITAL CORP |
| Jun 23, 2020 | Deed of Trust, Mortgage · Conventional Mortgage SECURE ONE CAP |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Aug 20, 2015 · Amount on File |
| Deed Sale | Aug 20, 2015 · Amount on File |
| Deed Document Number | 201587810 |
| Prior Transfer Date | Apr 11, 2013 |
| Prior Transfer Doc | 0000063737 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | May 27, 2026 |
| Property Address | 817 KATHRYNE AVE, SAN MATEO, CA 94401-3124 |
| Document Number | 0000030046 |
| Instrument Date | May 15, 2026 |
| Instrument | 202630046 |
| Transaction Type | Transfer |
| Record Updated | Jul 12, 2026 |
| Title Company | NONE LISTED ON DOCUMENT |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Trust |
| Address | 817 KATHRYNE AVE, SAN MATEO, CA 94401-3124 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Property Address | 817 KATHRYNE AVE, SAN MATEO, CA 94401-3124 |
| Transaction Type | Mortgage |
| Record Updated | Apr 5, 2021 |
| Name | Verified Name |
|---|---|
| Address | 817 KATHRYNE AVE, SAN MATEO, CA 94401-3124 |
| Document Number | 0000035323 |
|---|---|
| Date | Mar 4, 2021 |
| Instrument | 2021-035323 |
| Name | SECURE ONE CAPITAL CORP |
|---|---|
| Type | Mortgage Company |
| Address | COSTA MESA, CA 92626 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 180 Months |
| Due | Mar 1, 2036 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Property Address | 817 KATHRYNE AVE, SAN MATEO, CA 94401-3124 |
| Document Number | 0000061173 |
| Instrument Date | Jun 23, 2020 |
| Transaction Type | Mortgage |
| Record Updated | Jul 24, 2020 |
| Title Company | TICOR TITLE ORANGE COUNTY BR, TICOR TITLE ORANGE CNTY BR |
| Name | Verified Name |
|---|---|
| Relationship | Community Property |
| Address | 817 KATHRYNE AVE SAN MATEO CA 944013124, SAN MATEO, CA 94401-3124 |
| Document Number | 0000061173 |
|---|---|
| Date | Jun 30, 2020 |
| Instrument | 61173 |
| Name | SECURE ONE CAP |
|---|---|
| Type | Funding / Finance Company |
| Address | COSTA MESA, CA 92626 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 360 Months |
| Due | Jun 29, 2050 |
The 2025 property tax bill for 817 Kathryne Ave was $16,319.
Source: San Mateo County assessment roll, as of July 15, 2026
| Type | Name |
|---|---|
| State | California |
| County | San Mateo County |
| Municipality | San Mateo City |
| Elementary School District | San Mateo-Foster City Elementary School District (KG - 08) |
| Secondary School District | San Mateo Union High School District (09 - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $1,255,766 (+2%) Land $627,883 Building $627,883 | ||
| 2025 | $16,319.00 | $1,231,144 Land $615,572 Building $615,572 | |
| 2023 | $15,686.00 (+1.72%) | $1,183,338 Land $591,669 Building $591,669 | $1,731,690 |
| 2022 | $15,421.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 817 Kathryne Ave in Zone X, where a levee reduces flood risk, though there have been 6 flood claims nearby since 1978.
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 reduced by levee · depends on levee performance |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on File median of 12 policies |
| Nearby Flood Policies | 12 in force |
| Nearby Flood Claims | 6 (1978–2004) |
| Most Recent Claim | Nov 2004 |
| 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.
The area around 817 Kathryne Ave has no burnable land within ember reach, so its wildfire risk is not rated.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within 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 - SAN MATEO private · serves 103,536 people · EPA ID CA4110008 |
|---|---|
| Water Source | Purchased surface water from SAN FRANCISCO REGIONAL WATER SYSTEM |
| Last State Inspection | Mar 2025 |
| Lead | 4 ppb (2023–2025) 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 300 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Astound Broadband Cable | 1,500 / 50 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| Etheric Networks Fixed Wireless | 250 / 100 |
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