San Mateo County property record for 19 Hermosa Ave, Millbrae, CA 94030
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · 1,580 sqft · built 1932 |
| Lot Size | 0.086 acres (3,744 sqft) |
| Owner | Company Name on File |
| Last Sale | $785,000 (Oct 2007) |
| Tax Bill | $1,504 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 021-313-110 |
| Primary APN | 021-313-110 |
|---|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 8 Rooms |
| Stories | 1 Story |
| Building Area | 1,580 sqft Living Area |
| Gross Area | 2,670 sqft |
| 1st Floor Area | 1,090 sqft |
| Basement Area | 1,330 sqft |
| Finished Basement | 240 sqft |
| Unfinished Basement | 1,090 sqft |
| Family Room | Family Room |
| Year Built | Built 1932 |
|---|---|
| Effective Year Built | Effective 1932 |
| Lot Area | 3,744 sqft (0.086 acres) |
| Lot Dimensions | 100 ft deep x 38 ft wide |
| Garage Type | Basement |
| Garage Area | 1,090 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 19 HERMOSA AVE |
|---|---|
| City | MILLBRAE |
| State | CA |
| Zip | 94030-2047 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R20000 |
| Legal Description | SWLY 1/2 OF LOT 31 BLOCK C LOT 33 BLOCK C MILLBRAE |
| Legal Subdivision | MILLBRAE |
| Legal Block | C |
| Legal Lot Number | 31,33 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SOUTH SAN FRANCISCO |
| Census Block Group | 3 |
| Census Block | 3003 |
| Census Tract | 604400 |
19 Hermosa Ave is owned by a company that bought it in October 2007 and is owner-occupied.
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 | Company Name on File |
|---|---|
| Mailing Address | PO BOX 896, MILLBRAE, CA 94030-0896 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Company |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Oct 5, 2007 · Amount on File |
| Deed Sale | Oct 5, 2007 · Amount on File |
| Prior Sale | Nov 19, 2004 · Amount on File |
| Deed Document Number | 2007146104 |
| Prior Transfer Date | May 15, 1997 |
| Prior Transfer Doc | 0000059418 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 19 Hermosa Ave was $1,504 with an additional exemption.
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 | $1,051,718 (+2%) Land $525,859 Building $525,859 | ||
| 2025 | $1,504.00 Additional exemption filed | $1,031,098 Land $515,549 Building $515,549 | |
| 2023 | $1,445.00 (+594.71%) Additional exemption filed | $991,062 Land $495,531 Building $495,531 | $844,110 |
| 2022 | $208.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 19 Hermosa Ave in Zone X, an area of minimal flood risk, though there have been 3 flood claims nearby since 1980.
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 Claims | 3 (1980–1982) |
| Claims Outside the SFHA | 1 of 3 |
| Most Recent Claim | Dec 1982 · rainfall accumulation |
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.
The area around 19 Hermosa 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 441 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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