San Mateo County property record for 550 Sylvan Ave, San Mateo, CA 94403
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · 1,120 sqft · built 1942 |
| Lot Size | 0.125 acres (5,443 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $815,000 (Jun 2013) |
| Tax Bill | $13,068 (2025) |
| Deeds & Mortgages | Jul 2021 Mortgage Jul 2020 Mortgage + 1 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 039-302-300 |
| Primary APN | 039-302-300 |
|---|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 5 Rooms |
| Building Area | 1,120 sqft Living Area |
| 1st Floor Area | 1,120 sqft |
| Family Room | Family Room |
| Year Built | Built 1942 |
|---|---|
| Effective Year Built | Effective 1942 |
| Lot Area | 5,443 sqft (0.125 acres) |
| Lot Dimensions | 109 ft deep x 50 ft wide |
| Garage Area | 410 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 550 SYLVAN AVE |
|---|---|
| City | SAN MATEO |
| State | CA |
| Zip | 94403-3214 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10006 |
| Legal Description | LOT 16 BLOCK 17 SAN MATEO TERRACE MAP NO 5 RSM 22/35 CITY OFSAN MATEO |
| Legal Subdivision | SAN MATEO TERRACE MAP NO 5 |
| Legal Block | 17 |
| Legal Lot Number | 16 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 3 |
| Census Block | 3000 |
| Census Tract | 607300 |
550 Sylvan Ave is owner-occupied and held in a trust since October 2017.
Source: San Mateo County records, as of July 15, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 550 SYLVAN AVE, SAN MATEO, CA 94403-3214 |
| 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 |
|---|---|
| Jul 7, 2021 | Deed of Trust, Mortgage · Conventional Mortgage US BANK NA |
| Jul 13, 2020 | Deed of Trust, Mortgage · Conventional Mortgage US BANK NA |
| Oct 19, 2017 | Quit Claim Deed, Transfer Quitclaim |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jun 7, 2013 · Amount on File |
| Deed Sale | Jun 7, 2013 · Amount on File |
| Prior Sale | Aug 31, 2006 · Amount on File |
| Deed Document Number | 201386072 |
| Last Transfer Date | Oct 3, 2017 |
| Transfer Doc | 0000092259 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Property Address | 550 SYLVAN AVE, SAN MATEO, CA 94403-3214 |
| Transaction Type | Mortgage |
| Record Updated | Oct 18, 2022 |
| Title Company | SERVICELINK |
| Name | Verified Name |
|---|---|
| Address | 550 SYLVAN AVE, SAN MATEO, CA 94403-3214 |
| Document Number | 0000102362 |
|---|---|
| Date | Jul 7, 2021 |
| Instrument | 2021-102362 |
| Name | US BANK NA |
|---|---|
| Type | Bank |
| Address | OWENSBORO, KY 42301 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 169 Months |
| Due | Aug 1, 2035 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Property Address | 550 SYLVAN AVE, SAN MATEO, CA 94403-3214 |
| Transaction Type | Mortgage |
| Record Updated | Oct 18, 2022 |
| Title Company | SERVICELINK |
| Name | Verified Name |
|---|
| Document Number | 0000066394 |
|---|---|
| Date | Jul 13, 2020 |
| Instrument | 2020-066394 |
| Name | US BANK NA |
|---|---|
| Type | Bank |
| Address | OWENSBORO, KY 42301 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 181 Months |
| Due | Aug 1, 2035 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Oct 19, 2017 |
| Property Address | 550 SYLVAN AVE, SAN MATEO, CA 94403-3214 |
| Document Number | 0000092259 |
| Instrument Date | Oct 3, 2017 |
| Instrument | 92259 |
| Transaction Type | Transfer |
| Record Updated | Nov 30, 2017 |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Revocable Trust |
| Address | 550 SYLVAN AVE SAN MATEO CA 944033214, SAN MATEO, CA 94403-3214 |
The 2025 property tax bill for 550 Sylvan Ave was $13,068 with a homeowner's exemption.
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 | $1,023,674 (+2%) Land $511,837 Building $511,837 | ||
| 2025 | $13,068.00 Homeowner's exemption | $1,003,602 Land $501,801 Building $501,801 | |
| 2023 | $12,409.00 (+1.21%) Homeowner's exemption | $964,632 Land $482,316 Building $482,316 | $1,203,390 |
| 2022 | $12,261.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 550 Sylvan Ave in Zone X, an area of minimal flood risk, though there have been 2 flood claims nearby since 2009.
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 (2009–2017) |
| Claims Outside the SFHA | 2 of 2 |
| Most Recent Claim | Jan 2017 · Severe Winter Storms, Flooding, And Mudslides |
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 550 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 732 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, T-Mobile.
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