San Mateo County property record for 21 Powell St, San Mateo, CA 94401
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,439 sqft · built 1945 |
| Lot Size | 0.115 acres (5,000 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $1,060,000 (Sep 2019) |
| Tax Bill | $17,648 (2025) |
| Deeds & Mortgages | Sep 2019 Sale & Mortgage Jul 2019 Transfer + 1 more |
| Flood Zone | Zone X (reduced by levee) |
| APN | 033-213-170 |
| Primary APN | 033-213-170 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 1,439 sqft Living Area |
| 1st Floor Area | 1,439 sqft |
| Family Room | Family Room |
| Year Built | Built 1945 |
|---|---|
| Effective Year Built | Effective 1945 |
| Lot Area | 5,000 sqft (0.115 acres) |
| Lot Dimensions | 100 ft deep x 50 ft wide |
| Garage Area | 260 sqft |
| Parking Spaces | 1 Parking Space |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 21 POWELL ST |
|---|---|
| City | SAN MATEO |
| State | CA |
| Zip | 94401-2030 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R106 |
| Legal Description | LOT 2 BLOCK 8 SHORE VIEW TRACT MAP NO 3 RSM 24/30 CITY OF SAN MATEO |
| Legal Subdivision | SHORE VIEW TRACT MAP NO 3 |
| Legal Block | 8 |
| Legal Lot Number | 2 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 3 |
| Census Block | 3001 |
| Census Tract | 606100 |
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 Individual Names on Record |
|---|---|
| Mailing Address | 21 POWELL ST, SAN MATEO, CA 94401-2030 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Date | Document |
|---|---|
| Sep 30, 2019 | Grant Deed, Transfer SAN MATEO CU |
| Jul 8, 2019 | Quit Claim Deed, Transfer NOT AVAILABLE |
| Jul 8, 2019 | Quit Claim Deed, Transfer NOT AVAILABLE |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Sep 30, 2019 · Amount on Record |
| Deed Sale | Sep 30, 2019 · Amount on Record |
| Deed Document Number | 201980666 |
| Prior Transfer Date | Jun 29, 2019 |
| Prior Transfer Doc | 0000052528 |
| Record Updated | Sep 20, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Sep 30, 2019 |
| Property Address | 21 POWELL ST, SAN MATEO, CA 94401-2030 |
| Document Number | 0000080666 |
| Instrument Date | Sep 19, 2019 |
| Instrument | 80666 |
| Transaction Type | Transfer |
| Record Updated | Oct 24, 2019 |
| Title Company | FIRST AMERICAN TITLE |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $1,166.00 |
| Amount Accuracy | Full Value |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property |
| Address | 21 POWELL ST SAN MATEO CA 944012030, SAN MATEO, CA 94401-2030 |
| Document Number | 80667 |
|---|---|
| Date | Sep 30, 2019 |
| Instrument | 80667 |
| Name | SAN MATEO CU |
|---|---|
| Type | Credit Union |
| Address | REDWOOD CITY, CA 94063 |
| Amount | Amount Recorded |
|---|---|
| Term | 360 Months |
| Due | Sep 29, 2049 |
| Document Number | 80668, |
|---|---|
| Date | Sep 30, 2019 |
| Instrument | 80668 |
| Name | SAN MATEO CU |
|---|---|
| Type | Credit Union |
| Address | REDWOOD CITY, CA 94063 |
| Amount | Amount Recorded |
|---|---|
| Term | 180 Months |
| Due | Sep 29, 2034 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Jul 8, 2019 |
| Property Address | 21 POWELL ST, SAN MATEO, CA 94401-2030 |
| Document Number | 0000052528 |
| Instrument Date | Jun 29, 2019 |
| Instrument | 52528 |
| Transaction Type | Transfer |
| Record Updated | Jul 31, 2019 |
| Title Company | NOT AVAILABLE |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Personal Trust |
| Address | 2515 MAGNOLIA WAY MORGAN HILL CA 950377903, MORGAN HILL, CA 95037-7903 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Jul 8, 2019 |
| Property Address | 21 POWELL ST, SAN MATEO, CA 94401-2030 |
| Document Number | 0000052527 |
| Instrument Date | Jun 29, 2019 |
| Instrument | 52527 |
| Transaction Type | Transfer |
| Record Updated | Jul 31, 2019 |
| Title Company | NOT AVAILABLE |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Married Couple |
| Address | 2515 MAGNOLIA WAY MORGAN HILL CA 950377903, MORGAN HILL, CA 95037-7903 |
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 | $1,359,663 (+2%) Land $795,361 Building $564,302 | ||
| 2025 | $17,648.00 (+7.45%) | $1,333,005 (+4.04%) Land $779,766 Building $553,239 | |
| 2023 | $16,425.00 (+16.78%) | $1,281,245 Land $749,488 Building $531,757 | $1,347,480 |
| 2022 | $14,065.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
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 Record median of 10 policies |
| Nearby Flood Policies | 10 in force |
| Nearby Flood Claims | 1 (2017) |
| Most Recent Claim | Jan 2017 · Severe Winter Storm |
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.
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 220 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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