San Mateo County property record for 720 S B St, San Mateo, CA 94401
| Property Type | Commercial Office |
|---|---|
| Details | 2 bd · 1 ba · 3,532 sqft · built 1982 |
| Lot Size | 0.131 acres (5,701 sqft) |
| Owner | Company Name on File |
| Last Sale | $3,400,000 (Nov 2019) |
| Tax Bill | $43,127 (2025) |
| Deeds & Mortgages | Dec 2025 Mortgage Nov 2019 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 034-196-040 |
| Primary APN | 034-196-040 |
|---|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 5 Rooms |
| Stories | 2 Stories |
| Building Area | 3,532 sqft Gross Area |
| Year Built | Built 1982 |
|---|---|
| Effective Year Built | Effective 1982 |
| Lot Area | 5,701 sqft (0.131 acres) |
| Lot Dimensions | 110 ft deep x 52 ft wide |
| Garage Type | Attached |
| Garage Area | 3,366 sqft |
| Street Address | 720 S B ST |
|---|---|
| City | SAN MATEO |
| State | CA |
| Zip | 94401-4245 |
| Property Category | Commercial |
| Property Type | Commercial > Office > Commercial Office |
| Local Zoning Code | C200DR |
| Legal Description | LOT 5 BLOCK 3 HAYWARD ADDITION TO CITY OF SAN MATEO RSM D/61 |
| Legal Subdivision | HAYWARD ADDITION TO CITY OF SAN MATEO |
| Legal Block | 3 |
| Legal Lot Number | 5 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 2 |
| Census Block | 2023 |
| Census Tract | 606300 |
720 S B St, a commercial property, is owned by a company that bought it in November 2019.
Source: San Mateo County records, as of July 15, 2026
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 720 S B ST, SAN MATEO, CA 94401-4245 |
| Owner Type | Company |
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 |
|---|---|
| Dec 19, 2025 | Deed of Trust, Mortgage · Commercial Mortgage SECURED INCOME FUND II LLC |
| Nov 26, 2019 | Grant Deed, Transfer · Commercial Mortgage CTBC BANK CORP USA |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Nov 26, 2019 · Amount on File |
| Deed Sale | Nov 26, 2019 · Amount on File |
| Deed Document Number | 2019100430 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Property Address | 720 S B ST, SAN MATEO, CA 94401-4245 |
| Transaction Type | Mortgage |
| Record Updated | Jan 15, 2026 |
| Title Company | STEWART TITLE, STEWART TITLE OF CA INC |
| Name | Verified Name |
|---|---|
| Address | 720 S B ST, SAN MATEO, CA 94401-4245 |
| Document Number | 0000070188 |
|---|---|
| Date | Dec 19, 2025 |
| Instrument | 2025-070188 |
| Name | SECURED INCOME FUND II LLC |
|---|---|
| Type | Funding / Finance Company |
| Address | SAN JOSE, CA 95123 |
| Type | Commercial Mortgage |
|---|---|
| Amount | Amount on Record |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Nov 26, 2019 |
| Property Address | 720 S B ST, SAN MATEO, CA 94401-4245 |
| Document Number | 0000100430 |
| Map Reference | MB 3 PG 43 |
| Instrument Date | Nov 15, 2019 |
| Instrument | 2019-100430 |
| Transaction Type | Transfer |
| Record Updated | Aug 9, 2021 |
| Title Company | OLD REPUBLIC TITLE COMPANY |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $20,740.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|
| Document Number | 0000100431 |
|---|---|
| Date | Nov 26, 2019 |
| Instrument | 2019-100431 |
| Name | CTBC BANK CORP USA |
|---|---|
| Type | Bank |
| Type | Commercial Mortgage |
|---|---|
| Amount | Amount on Record |
| Rate Type | Adjustable Rate |
|---|
The 2025 property tax bill for 720 S B St was $43,127, up 1.5% 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 |
|---|---|---|
| 2026 | $3,792,760 (+2%) Land $1,427,862 Building $2,364,898 | |
| 2025 | $43,127.00 (+1.48%) | $3,718,393 Land $1,399,865 Building $2,318,528 |
| 2024 | $42,498.00 (+2.21%) | |
| 2023 | $41,579.00 (+1.34%) | $3,574,005 Land $1,345,507 Building $2,228,498 |
| 2022 | $41,031.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 720 S B St in Zone X, an area of minimal flood risk.
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.
The area around 720 S B St 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 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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