San Mateo County property record for 533 28th Ave, San Mateo, CA 94403
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1.5 ba · 1,550 sqft · built 1950 |
| Lot Size | 0.137 acres (5,968 sqft) |
| Owner | 2 Trust Names on File |
| Tax Bill | $7,919 (2025) |
| Deeds & Mortgages | May 2022 Line of Credit Jun 2022 Transfer + 1 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 039-283-070 |
| Primary APN | 039-283-070 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,550 sqft Living Area |
| 1st Floor Area | 1,550 sqft |
| Family Room | Family Room |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1950 |
|---|---|
| Effective Year Built | Effective 1950 |
| Architectural Style | Ranch |
| Exterior Material | Stucco |
| Construction Type | Frame |
| Roof Material | Composition Shingle |
| Lot Area | 5,968 sqft (0.137 acres) |
| Lot Dimensions | 119 ft deep x 50 ft wide |
| Garage Area | 390 sqft |
| Parking Spaces | 1 Parking Space |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Water Source | Commercial |
| Street Address | 533 28TH AVE |
|---|---|
| City | SAN MATEO |
| State | CA |
| Zip | 94403-2601 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10006 |
| Legal Description | LOT 7 BLOCK 1 COTTRELL SUB RSM 25/73 CITY OF SAN MATEO |
| Legal Subdivision | COTTRELL SUB |
| Legal Block | 1 |
| Legal Lot Number | 7 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 1 |
| Census Block | 1000 |
| Census Tract | 607300 |
533 28th Ave is owner-occupied and held in a trust since June 2022.
Source: San Mateo County records, as of July 15, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 533 28TH AVE, SAN MATEO, CA 94403-2601 |
| 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 |
|---|---|
| May 31, 2022 | Deed of Trust, Mortgage · Line of Credit PATELCO CU |
| Jun 16, 2022 | Intrafamily Transfer, Transfer |
| Mar 30, 2021 | Affidavit of Death of Joint Tenant, Transfer |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Transfer Date | Jun 16, 2022 |
| Transfer Doc | 0000048640 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Property Address | 533 28TH AVE, SAN MATEO, CA 94403-2601 |
| Transaction Type | Mortgage |
| Record Updated | Oct 18, 2022 |
| Title Company | WFG NATIONAL TITLE |
| Name | Verified Name |
|---|---|
| Address | 533 28TH AVE, SAN MATEO, CA 94403-2601 |
| Document Number | 0000044186 |
|---|---|
| Date | May 31, 2022 |
| Instrument | 2022-044186 |
| Name | PATELCO CU |
|---|---|
| Type | Credit Union |
| Address | DUBLIN, CA 94568 |
| Type | Line of Credit |
|---|---|
| Amount | Amount on Record |
| Term | 302 Months |
| Due | Jun 30, 2047 |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Jun 16, 2022 |
| Property Address | 533 28TH AVE, SAN MATEO, CA 94403-2601 |
| Document Number | 0000048640 |
| Map Reference | MB 25 PG 72 |
| Instrument Date | Jun 16, 2022 |
| Instrument | 2022-048640 |
| Transaction Type | Transfer |
| Record Updated | Jun 7, 2023 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 533 28TH AVE, SAN MATEO, CA 94403-2601 |
| Document Type | Affidavit of Death of Joint Tenant |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Mar 30, 2021 |
| Property Address | 533 28TH AVE, SAN MATEO, CA 94403-2601 |
| Document Number | 0000051089 |
| Map Reference | MB 25 PG 73 |
| Instrument Date | Mar 4, 2021 |
| Instrument | 2021-051089 |
| Transaction Type | Transfer |
| Record Updated | Oct 18, 2022 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 533 28TH AVE, SAN MATEO, CA 94403-2601 |
The 2025 property tax bill for 533 28th Ave was $7,919 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 | $521,636 (+2%) Land $260,818 Building $260,818 | ||
| 2025 | $7,919.00 Homeowner's exemption | $511,408 Land $255,704 Building $255,704 | |
| 2023 | $6,741.00 (+4.03%) Homeowner's exemption | $491,552 Land $245,776 Building $245,776 | $1,536,840 |
| 2022 | $6,480.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 533 28th Ave in Zone X, an area of minimal flood risk, though there have been 3 flood claims nearby since 1983.
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 | 4 in force |
| Nearby Flood Claims | 3 (1983–2016) |
| Claims Outside the SFHA | 3 of 3 |
| Most Recent Claim | Mar 2016 · other causes |
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.
Wildfire risk around 533 28th Ave is low, with less than a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 99.1% of the US · lower than 99.2% of California |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond 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 799 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 | 1,500 / 50 |
May also be available: Etheric Networks, GeoLinks, T-Mobile, Verizon.
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