San Mateo County property record for 488 28th Ave, San Mateo, CA 94403
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 2 ba · 1,260 sqft · built 1940 |
| Lot Size | 0.157 acres (6,822 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $1,365,000 (Jun 2019) |
| Tax Bill | $19,725 (2025) |
| Deeds & Mortgages | Jan 2021 Mortgage Jun 2019 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 039-324-010 |
| Primary APN | 039-324-010 |
|---|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 1,260 sqft Living Area |
| 1st Floor Area | 1,260 sqft |
| Family Room | Family Room |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1940 |
|---|---|
| Effective Year Built | Effective 1940 |
| Architectural Style | Bungalow |
| Exterior Material | Stucco |
| Construction Type | Frame |
| Roof Material | Composition Shingle |
| Lot Area | 6,822 sqft (0.157 acres) |
| Lot Dimensions | 80 ft deep x 70 ft wide |
| View / Lot | Corner |
| Garage Area | 540 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 488 28TH AVE |
|---|---|
| City | SAN MATEO |
| State | CA |
| Zip | 94403-2407 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10006 |
| Legal Description | LOT 19 BLOCK 8 & SLY 15FT OF LOT 20 BLOCK 8 SAN MATEO TERRACE MAP NO 3 RSM 21/76 77 CITY OF SAN MATEO |
| Legal Subdivision | SAN MATEO TERRACE MAP NO 3 |
| Legal Block | 8 |
| Legal Lot Number | 19,20 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 3 |
| Census Block | 3015 |
| Census Tract | 607400 |
488 28th Ave is owned and occupied by two individuals who bought it in June 2019.
Source: San Mateo County records, as of July 15, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 488 28TH AVE, SAN MATEO, CA 94403-2407 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Community Property |
| Date | Document |
|---|---|
| Jan 19, 2021 | Deed of Trust, Mortgage · Conventional Mortgage QUICKEN LOANS LLC |
| Jun 28, 2019 | Grant Deed, Transfer · Conventional Mortgage PNC BANK NA |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jun 28, 2019 · Amount on File |
| Deed Sale | Jun 28, 2019 · Amount on File |
| Deed Document Number | 201950215 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Property Address | 488 28TH AVE, SAN MATEO, CA 94403-2407 |
| Transaction Type | Mortgage |
| Record Updated | Feb 16, 2021 |
| Title Company | FIDELITY NATIONAL TITLE |
| Name | Verified Name |
|---|---|
| Address | 488 28TH AVE, SAN MATEO, CA 94403-2407 |
| Document Number | 0000007674 |
|---|---|
| Date | Jan 19, 2021 |
| Instrument | 2021-007674 |
| Name | QUICKEN LOANS LLC |
|---|---|
| Type | Mortgage Company |
| Address | DETROIT, MI 48226 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Feb 1, 2051 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Jun 28, 2019 |
| Property Address | 488 28TH AVE, SAN MATEO, CA 94403-2407 |
| Document Number | 0000050215 |
| Map Reference | MB 21 PG 76 |
| Instrument Date | Jun 23, 2019 |
| Instrument | 2019-050215 |
| Transaction Type | Transfer |
| Record Updated | Aug 9, 2021 |
| Title Company | CHICAGO TITLE COMPANY |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $0.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property with Right of Survivorship |
| Address | 488 28TH AVE, SAN MATEO, CA 94403-2407 |
| Document Number | 0000050216 |
|---|---|
| Date | Jun 28, 2019 |
| Instrument | 2019-050216 |
| Name | PNC BANK NA |
|---|---|
| Type | Bank |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Jul 1, 2049 |
The 2025 property tax bill for 488 28th Ave was $19,725 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 | $1,691,480 (+8.82%) Land $1,137,827 Building $553,653 | ||
| 2025 | $19,725.00 Homeowner's exemption | $1,554,393 Land $1,115,517 Building $438,876 | |
| 2023 | $18,675.00 (+1.09%) Homeowner's exemption | $1,494,037 Land $1,072,201 Building $421,836 | $1,524,780 |
| 2022 | $18,474.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 488 28th Ave in Zone X, an area of minimal flood risk, though there have been 4 flood claims nearby since 1978.
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 | 1 in force |
| Nearby Flood Claims | 4 (1978–1986) |
| Most Recent Claim | Feb 1986 · Severe Storms & Flooding |
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 488 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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