San Mateo County property record for 331 Magnolia Ave, Millbrae, CA 94030
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,660 sqft · built 1927 |
| Lot Size | 0.172 acres (7,493 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $460,000 (Jul 1998) |
| Tax Bill | $9,699 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 024-141-140 |
| Primary APN | 024-141-140 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 7 Rooms |
| Building Area | 1,660 sqft Living Area |
| Gross Area | 2,470 sqft |
| 1st Floor Area | 1,660 sqft |
| Basement Area | 810 sqft |
| Family Room | Family Room |
| Year Built | Built 1927 |
|---|---|
| Effective Year Built | Effective 1927 |
| Lot Area | 7,493 sqft (0.172 acres) |
| Lot Dimensions | 150 ft deep x 50 ft wide |
| Garage Type | Basement |
| Garage Area | 810 sqft |
| Parking Spaces | 1 Parking Space |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 331 MAGNOLIA AVE |
|---|---|
| City | MILLBRAE |
| State | CA |
| Zip | 94030-2558 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10006 |
| Legal Description | LOT 31 BLOCK 19 MILLBRAE HIGHLANDS 1 |
| Legal Subdivision | MILLBRAE HIGHLANDS 1 |
| Legal Block | 19 |
| Legal Lot Number | 31 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SOUTH SAN FRANCISCO |
| Census Block Group | 3 |
| Census Block | 3000 |
| Census Tract | 604800 |
331 Magnolia Ave is owned and occupied by two individuals who bought it in July 1998.
Source: San Mateo County records, as of July 15, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 331 MAGNOLIA AVE, MILLBRAE, CA 94030-2558 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jul 3, 1998 · Amount on File |
| Deed Sale | Jul 3, 1998 · Amount on File |
| Deed Document Number | 1998105299 |
| Prior Transfer Date | Dec 5, 1995 |
| Prior Transfer Doc | 0000135624 |
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 331 Magnolia Ave was $9,699.
Source: San Mateo County assessment roll, as of July 15, 2026
| Type | Name |
|---|---|
| State | California |
| County | San Mateo County |
| Municipality | Millbrae City |
| Elementary School District | Millbrae 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 | $735,552 (+2%) Land $367,776 Building $367,776 | ||
| 2025 | $9,699.00 | $721,130 Land $360,565 Building $360,565 | |
| 2023 | $9,250.00 (+17.48%) | $693,130 Land $346,565 Building $346,565 | $1,414,620 |
| 2022 | $7,874.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 331 Magnolia Ave 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 331 Magnolia Ave 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 | CITY OF MILLBRAE serves 22,795 people · EPA ID CA4110018 |
|---|---|
| Water Source | Purchased surface water from SAN FRANCISCO REGIONAL WATER SYSTEM |
| Last State Inspection | Apr 2025 |
| Lead | Under 1 ppb (2023–2025) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 1 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 802 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 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: GeoLinks, Sail Internet, Verizon.
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