631 Chadbourne Ave, Millbrae, CA 94030 Property Records

San Mateo County property record for 631 Chadbourne Ave, Millbrae, CA 94030 · Last verified July 2026

Property Summary

Property Type	Duplex
Details	4 bd · 3 ba · 3,473 sqft · built 1907
Lot Size	0.098 acres (4,250 sqft)
Owner	2 Individual Names on File
Last Sale	$1,900,000 (May 2023)
Tax Bill	$25,227 (2025)
Deeds & Mortgages	May 2023 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`024-272-010`

Property Details

APN / Parcel Number

Primary APN	`024-272-010`

Interior

Bedrooms	4 Beds
Full Baths	3 Baths
Total Rooms	11 Rooms
Units	2 Units
Stories	2 Stories
Building Area	3,473 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1907
Effective Year Built	Effective 1907
Architectural Style	Duplex Single
Lot Area	4,250 sqft (0.098 acres)
Lot Dimensions	100 ft deep x 42 ft wide
View / Lot	Corner
Parking Spaces	3 Parking Spaces

Location & Zoning

Street Address	631 CHADBOURNE AVE
City	MILLBRAE
State	CA
Zip	94030-2420
Property Category	Residential
Property Type	Residential > Multi-Unit > Duplex
Legal Description	SW 42.5 FT OF LOTS 6 & 7 BLOCK 21 MILLBRAE VILLA TRACT
Legal Subdivision	MILLBRAE VILLA TRACT
Legal Block	21
Legal Lot Number	6,7
Jurisdiction	SAN MATEO CA
Township / Civil Division	SOUTH SAN FRANCISCO
Census Block Group	3
Census Block	3019
Census Tract	604800

Owner

Source: San Mateo County records · APN 024-272-010

Assessment roll updated July 15, 2026 · Last verified July 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	2 Individual Names on File
Mailing Address	631 CHADBOURNE AVE, MILLBRAE, CA 94030-2420
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Community Property

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	May 09, 2023 · Amount on Record
Deed Sale	May 09, 2023 · Amount on Record
Deed Document Number	202321747
Record Updated	Sep 20, 2026

May 2023: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	May 09, 2023
Property Address	631 CHADBOURNE AVE, MILLBRAE, CA 94030-2420
Document Number	0000021747
Map Reference	MB 1 PG 37
Instrument Date	Apr 20, 2023
Instrument	2023-021747
Transaction Type	Transfer
Record Updated	Jun 06, 2023
Title Company	OLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on File
Loan-to-Value (LTV)	LTV on Record
Tax	$2,090.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property with Right of Survivorship
Address	631 CHADBOURNE AVE, MILLBRAE, CA 94030-2420

Mortgage

Document Number	0000021748
Date	May 09, 2023
Instrument	2023-021748

Lender

Name	FIRST COMMERCIAL BANK USA
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Jun 01, 2053

Interest

Rate Type	Adjustable Rate
Rate	6.12%
Type Change Date	Jun 01, 2028
Change Frequency	Annually
Min Rate At Change	6.12%
Max Rate At Change	8.12%
Index	1-Year T-Bill
Margin	3
Max Rate	11.1%

Tax Assessment & Valuation

Source: San Mateo County records · Assessment roll updated July 15, 2026 · Last verified July 2026

Property Jurisdictions

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)

Tax Bill & Assessment History

Assessed value is set for property tax purposes and is not a market price estimate.

Year	Tax Bill	Assessed Value
2026		$2,016,294 (+2%) Land $1,018,759 Building $997,535
2025	$25,227.00 (+7.29%) Homeowner's exemption	$1,976,760 (-3.58%) Land $998,784 Building $977,976
2023	$23,514.00 (+778.04%)	$2,050,200 Land $1,020,000 Building $1,030,200
2022	$2,678.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, San Mateo County (06081C), updated September 10, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026

Flood

FEMA Flood Zone	Zone X
Special Flood Hazard Area	No
Flood Hazard	Minimal
500-Year Floodplain	No
Nearest Special Flood Hazard Area	Zone A, within 500 ft

Wildfire

Wildfire Risk	Not rated no burnable land in reach
Wildfire Likelihood	Negligible
Exposure	None beyond ember reach

Values are read at the parcel center point; lenders make the official flood determination.