San Mateo County property record for 504 9th Ave, San Mateo, CA 94402
| Property Type | Other |
|---|---|
| Details | 8,950 sqft · built 1929 |
| Lot Size | 0.245 acres (10,662 sqft) |
| Owner | 2 Company Names on Record |
| Last Sale | $625,000 (Jul 1997) |
| Tax Bill | $13,568 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 033-312-210 |
| Primary APN | 033-312-210 |
|---|
| Stories | 1 Story |
|---|---|
| Building Area | 8,950 sqft Gross Area |
| 1st Floor Area | 8,950 sqft |
| Year Built | Built 1929 |
|---|---|
| Effective Year Built | Effective 1929 |
| Lot Area | 10,662 sqft (0.245 acres) |
| Street Address | 504 9TH AVE |
|---|---|
| City | SAN MATEO |
| State | CA |
| Zip | 94402-1827 |
| Property Category | Other |
| Property Type | Other > Miscellaneous |
| Local Zoning Code | ML00M1 |
| Legal Description | LOTS 5 & 7 BLK 17 RESUB OF BLKS 5 TO 10 16 TO 31 EAST SAN MATEO RSM 6/36 |
| Legal Subdivision | EAST SAN MATEO |
| Legal Block | 17,5- |
| Legal Lot Number | 5,7 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 2 |
| Census Block | 2014 |
| Census Tract | 606300 |
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 | 2 Company Names on Record |
|---|---|
| Mailing Address | 432 VISTA AVE, SAN CARLOS, CA 94070-1950 |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jul 9, 1997 · Amount on Record |
| Deed Sale | Jul 9, 1997 · Amount on Record |
| Prior Sale | Apr 8, 1996 · Amount on Record |
| Deed Document Number | 199782349 |
| Prior Transfer Date | Mar 19, 1996 |
| Prior Transfer Doc | 0000042184 |
| Record Updated | Oct 29, 2026 |
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 |
|---|---|---|
| 2026 | $1,017,915 (+2%) Land $692,187 Building $325,728 | |
| 2025 | $13,568.00 (+12.48%) | $997,957 (+4.04%) Land $678,615 Building $319,342 |
| 2023 | $12,063.00 (+1.51%) | $959,207 Land $652,264 Building $306,943 |
| 2022 | $11,884.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
Source: FEMA National Flood Hazard Layer, effective September 10, 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
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 915 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · Fixed Wireless, DSL in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Astound Broadband Cable | 1,500 / 50 |
| Sonic Telecom Fiber | 1,000 / 1,000 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: GeoLinks.
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