San Mateo County property record for 417 Sylvan Ave, San Mateo, CA 94403
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,310 sqft · built 1941 |
| Lot Size | 0.126 acres (5,500 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $875,000 (Jul 2006) |
| Tax Bill | $15,600 (2025) |
| Deeds & Mortgages | Feb 2024 Second Mortgage Jul 2023 Transfer + 1 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 039-311-070 |
| Primary APN | 039-311-070 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 1,310 sqft Living Area |
| 1st Floor Area | 1,040 sqft |
| Family Room | Family Room |
| Year Built | Built 1941 |
|---|---|
| Effective Year Built | Effective 1941 |
| Lot Area | 5,500 sqft (0.126 acres) |
| Lot Dimensions | 110 ft deep x 50 ft wide |
| Garage Area | 310 sqft |
| Parking Spaces | 1 Parking Space |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 417 SYLVAN AVE |
|---|---|
| City | SAN MATEO |
| State | CA |
| Zip | 94403-3333 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10006 |
| Legal Description | LOT 7 BLOCK 14 SAN MATEO TERRACE MAP NO 5 RSM 22/35 CITY OF SAN MATEO |
| Legal Subdivision | SAN MATEO TERRACE MAP NO 5 |
| Legal Block | 14 |
| Legal Lot Number | 7 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 2 |
| Census Block | 2015 |
| Census Tract | 607300 |
417 Sylvan Ave is owner-occupied and held in a trust since June 2023.
Source: San Mateo County records, as of August 12, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 417 SYLVAN AVE, SAN MATEO, CA 94403-3333 |
| Occupancy | Owner Occupied |
| 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 |
|---|---|
| Feb 5, 2024 | Deed of Trust, Mortgage · Stand-Alone Second Mortgage PATELCO CU |
| Jul 14, 2023 | Intrafamily Transfer, Transfer |
| Jul 2, 2020 | Deed of Trust, Mortgage · Conventional Mortgage UNITED WHOLESALE MORTGAGE |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jul 28, 2006 · Amount on File |
| Deed Sale | Jul 28, 2006 · Amount on File |
| Deed Document Number | 2006113175 |
| Last Transfer Date | Jun 30, 2023 |
| Transfer Doc | 0000033832 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Property Address | 417 SYLVAN AVE, SAN MATEO, CA 94403-3333 |
| Transaction Type | Mortgage |
| Record Updated | Feb 27, 2024 |
| Title Company | ATLANTIS TITLE COMPANY, ATLAS TITLE COMPANY |
| Name | Verified Name |
|---|---|
| Address | 417 SYLVAN AVE, SAN MATEO, CA 94403-3333 |
| Document Number | 0000006994 |
|---|---|
| Date | Feb 5, 2024 |
| Instrument | 2024-006994 |
| Name | PATELCO CU |
|---|---|
| Type | Credit Union |
| Address | DUBLIN, CA 94568 |
| Type | Stand-Alone Second Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 240 Months |
| Due | Feb 1, 2044 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Jul 14, 2023 |
| Property Address | 417 SYLVAN AVE, SAN MATEO, CA 94403-3333 |
| Document Number | 0000033832 |
| Map Reference | MB 22 PG 35 |
| Instrument Date | Jun 30, 2023 |
| Instrument | 2023-033832 |
| Transaction Type | Transfer |
| Record Updated | Aug 10, 2023 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Revocable Trust |
| Address | 417 SYLVAN AVE, SAN MATEO, CA 94403-3333 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Property Address | 417 SYLVAN AVE, SAN MATEO, CA 94403-3333 |
| Transaction Type | Mortgage |
| Record Updated | Aug 5, 2022 |
| Title Company | FIDELITY NATIONAL TITLE |
| Name | Verified Name |
|---|
| Document Number | 0000062464 |
|---|---|
| Date | Jul 2, 2020 |
| Instrument | 2020-062464 |
| Name | UNITED WHOLESALE MORTGAGE |
|---|---|
| Type | Mortgage Company |
| Address | PONTIAC, MI 48341 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 360 Months |
| Due | Jul 1, 2050 |
The 2025 property tax bill for 417 Sylvan Ave was $15,600 with a homeowner's exemption, up 1.9% from the year before.
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 | $1,195,750 (+2%) Land $597,875 Building $597,875 | ||
| 2025 | $15,600.00 (+1.87%) Homeowner's exemption | $1,172,304 Land $586,152 Building $586,152 | |
| 2024 | $15,313.00 (+7.27%) | ||
| 2023 | $14,275.00 (+0.25%) Homeowner's exemption | $1,126,784 Land $563,392 Building $563,392 | $1,891,350 |
| 2022 | $14,239.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 417 Sylvan Ave in Zone X, an area of minimal flood risk, though there have been 4 flood claims nearby since 1998.
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 | 4 (1998–2022) |
| Claims Outside the SFHA | 4 of 4 |
| Most Recent Claim | Dec 2022 · rainfall accumulation |
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 417 Sylvan 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 716 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Sonic Telecom Fiber | 10,000 / 10,000 |
| AT&T Fiber · Fixed Wireless, DSL in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Astound Broadband Cable · Fiber in parts of the area | 1,500 / 50 |
May also be available: Etheric Networks, GeoLinks, T-Mobile.
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