San Mateo County property record for 380 Chadbourne Ave, Millbrae, CA 94030
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,510 sqft · built 1940 |
| Lot Size | 0.11 acres (4,800 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $2,380,000 (Sep 2026) |
| Tax Bill | $3,190 (2025) |
| Deeds & Mortgages | Sep 2026 Sale & Mortgage Sep 2018 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 024-281-080 |
| Primary APN | 024-281-080 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 1,510 sqft Living Area |
| Gross Area | 1,810 sqft |
| 1st Floor Area | 1,510 sqft |
| Basement Area | 300 sqft |
| Family Room | Family Room |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1940 |
|---|---|
| Effective Year Built | Effective 1940 |
| Lot Area | 4,800 sqft (0.11 acres) |
| Lot Dimensions | 120 ft deep x 40 ft wide |
| View / Lot | Corner |
| Garage Type | Basement |
| Garage Area | 300 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 380 CHADBOURNE AVE |
|---|---|
| City | MILLBRAE |
| State | CA |
| Zip | 94030-2515 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R20000 |
| Legal Description | LOT 1 BLOCK 16 MILLBRAE VILLA TRACT |
| Legal Subdivision | MILLBRAE VILLA TRACT |
| Legal Block | 16 |
| Legal Lot Number | 1 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SOUTH SAN FRANCISCO |
| Census Block Group | 3 |
| Census Block | 3003 |
| Census Tract | 604800 |
380 Chadbourne Ave is owned and occupied by two individuals who bought it in September 2026.
Source: San Mateo County records, as of October 21, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 380 CHADBOURNE AVE, MILLBRAE, CA 94030-2515 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Husband and Wife |
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 |
|---|---|
| Sep 18, 2026 | Grant Deed, Transfer · Conventional Mortgage Q FINANCIAL INC |
| Sep 10, 2018 | Affidavit of Death, Transfer ATTORNEY ONLY |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Sep 18, 2026 · Amount on File |
| Deed Sale | Sep 18, 2026 · Amount on File |
| Deed Document Number | 202653060 |
| Prior Transfer Date | Sep 26, 2001 |
| Prior Transfer Doc | 0000164004 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Sep 18, 2026 |
| Property Address | 380 CHADBOURNE AVE, MILLBRAE, CA 94030-2515 |
| Document Number | 0000053060 |
| Instrument Date | Sep 14, 2026 |
| Instrument | 202653060 |
| Transaction Type | Transfer |
| Record Updated | Oct 20, 2026 |
| Title Company | FIRST AMERICAN TITLE |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $264,418.00 |
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 380 CHADBOURNE AVE, MILLBRAE, CA 94030-2515 |
| Document Number | 0000053061, |
|---|---|
| Date | Sep 18, 2026 |
| Instrument | 202653061 |
| Name | Q FINANCIAL INC |
|---|
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 180 Months |
| Due | Oct 1, 2041 |
| Rate Type | Fixed Rate |
|---|---|
| Initial Type | Fixed Rate |
| Max Rate | -1% |
| Document Type | Affidavit of Death |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Sep 10, 2018 |
| Property Address | 380 CHADBOURNE AVE, MILLBRAE, CA 94030-2515 |
| Document Number | 0000070764 |
| Instrument Date | Sep 9, 2018 |
| Instrument | 70764 |
| Transaction Type | Transfer |
| Record Updated | Mar 26, 2020 |
| Title Company | ATTORNEY ONLY |
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Personal Trust |
| Address | 380 CHADBOURNE AVE MILLBRAE CA 940302515, MILLBRAE, CA 94030-2515 |
The 2025 property tax bill for 380 Chadbourne Ave was $3,190.
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 | $132,971 (+2%) Land $36,224 Building $96,747 | ||
| 2025 | $3,190.00 Homeowner's exemption | $130,364 Land $35,514 Building $94,850 | |
| 2023 | $3,051.00 (+80.96%) | $125,304 Land $34,136 Building $91,168 | $1,618,020 |
| 2022 | $1,686.00 |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
FEMA maps place 380 Chadbourne 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.
Wildfire risk around 380 Chadbourne 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 99.8% of the US · lower than 99.8% 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 | 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 400 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · DSL · Fixed Wireless in parts of the area | 5,000 / 5,000 |
| Xfinity Cable · Fiber in parts of the area | 2,000 / 250 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Astound Broadband, GeoLinks, Race Communications, Sail Internet, Verizon.
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