San Mateo County property record for 507 Helen Dr, Millbrae, CA 94030
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,760 sqft · built 1948 |
| Lot Size | 0.115 acres (5,000 sqft) |
| Owner | 2 Company Names on Record |
| Last Sale | $700,000 (May 2003) |
| Tax Bill | $13,409 (2025) |
| Deeds & Mortgages | Mar 2022 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 021-331-320 |
| Primary APN | 021-331-320 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 1,760 sqft Living Area |
| 1st Floor Area | 1,290 sqft |
| Family Room | Family Room |
| Study | Study |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1948 |
|---|---|
| Effective Year Built | Effective 1948 |
| Architectural Style | Ranch |
| Exterior Material | Stucco |
| Roof Material | Composition Shingle |
| Lot Area | 5,000 sqft (0.115 acres) |
| Lot Dimensions | 100 ft deep x 50 ft wide |
| Garage Area | 410 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 507 HELEN DR |
|---|---|
| City | MILLBRAE |
| State | CA |
| Zip | 94030-1619 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10006 |
| Legal Description | LOT 36 BLOCK 18 MEADOW GLEN UNIT NO 2 RSM 29/27 CITY OF MILLBRAE |
| Legal Subdivision | MEADOW GLEN UNIT NO 2 |
| Legal Block | 18 |
| Legal Lot Number | 36 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SOUTH SAN FRANCISCO |
| Census Block Group | 1 |
| Census Block | 1000 |
| Census Tract | 604700 |
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 Company Names on Record |
|---|---|
| Mailing Address | 507 HELEN DR, MILLBRAE, CA 94030-1619 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | May 16, 2003 · Amount on Record |
| Deed Sale | May 16, 2003 · Amount on Record |
| Deed Document Number | 2003134288 |
| Last Transfer Date | Jan 6, 2022 |
| Transfer Doc | 0000025403 |
| Record Updated | Sep 20, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Mar 24, 2022 |
| Property Address | 507 HELEN DR, MILLBRAE, CA 94030-1619 |
| Document Number | 0000025403 |
| Map Reference | MB 29 PG 27 |
| Instrument Date | Jan 6, 2022 |
| Instrument | 2022-025403 |
| Transaction Type | Transfer |
| Record Updated | Jun 7, 2023 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Family Trust |
| Address | 507 HELEN DR, MILLBRAE, CA 94030-1619 |
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 | $1,062,520 (+2%) Land $517,048 Building $545,472 | ||
| 2025 | $13,409.00 (+4.94%) Homeowner's exemption | $1,041,687 (+4.04%) Land $506,910 Building $534,777 | |
| 2023 | $12,778.00 (+14.56%) Homeowner's exemption | $1,001,240 Land $487,227 Building $514,013 | $1,554,300 |
| 2022 | $11,154.00 |
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
| 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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 80% of the US · lower than 88% of California |
|---|---|
| Wildfire Likelihood | 0.01% annual chance |
| Exposure | Direct burnable vegetation |
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 586 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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