331 Warren Rd, San Mateo, CA 94402 Property Records

San Mateo County property record for 331 Warren Rd, San Mateo, CA 94402

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 2,100 sqft · built 1950
Lot Size	0.171 acres (7,443 sqft)
Owner	2 Individual Names on Record
Last Sale	$2,000,000 (Feb 2017)
Tax Bill	$27,897 (2025)
Deeds & Mortgages	Mar 2017 Line of Credit Nov 2020 Line of Credit + 3 more
Flood Zone	Zone X (minimal risk)
APN	`032-032-180`

Property Details

APN / Parcel Number

Primary APN	`032-032-180`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Total Rooms	7 Rooms
Building Area	2,100 sqft Living Area
Gross Area	2,710 sqft
1st Floor Area	1,840 sqft
Basement Area	610 sqft
Family Room	Family Room

Exterior

Year Built	Built 1950
Effective Year Built	Effective 1950
Lot Area	7,443 sqft (0.171 acres)
Lot Dimensions	138 ft deep x 52 ft wide
Garage Type	Basement
Garage Area	610 sqft
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	331 WARREN RD
City	SAN MATEO
State	CA
Zip	94402-1037
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R10010
Legal Description	53.50 FT X 49.75 FT F & R MEAS PTN OF LOTS 171 172 SAN MATEO PARK SUB NO 2 RSM D/55 CITY OF SAN MATEO
Legal Subdivision	SAN MATEO PARK
Legal Lot Number	171
Jurisdiction	SAN MATEO CA
Township / Civil Division	SAN MATEO
Census Block Group	1
Census Block	1009
Census Tract	605800

Owner

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 Individual Names on Record
Mailing Address	331 WARREN RD, SAN MATEO, CA 94402-1037
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Community Property

Deeds, Mortgages & Sale History

Date	Document
Mar 17, 2017	Deed of Trust, Mortgage · Line of Credit JPMORGAN CHASE BANK NA
Nov 12, 2020	Deed of Trust, Mortgage · Line of Credit FREMONT BANK
Jul 30, 2020	Deed of Trust, Mortgage · Conventional Mortgage JPMORGAN CHASE BANK NA
Feb 6, 2017	Grant Deed, Transfer · Conventional Mortgage JPMORGAN CHASE BANK NA
Feb 6, 2017	Affidavit of Death, Transfer CHICAGO TITLE COMPANY, CHICAGO TITLE CO

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Feb 6, 2017 · Amount on Record
Deed Sale	Feb 6, 2017 · Amount on Record
Deed Document Number	201711775
Record Updated	Sep 20, 2026

March 2017: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	331 WARREN RD, SAN MATEO, CA 94402-1037
Transaction Type	Mortgage
Record Updated	Feb 5, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000023410
Date	Mar 17, 2017
Instrument	2017-023410

Lender

Name	JPMORGAN CHASE BANK NA
Type	Bank
Address	COLUMBUS, OH 43240

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	420 Months
Due	Mar 6, 2052

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

November 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	331 WARREN RD, SAN MATEO, CA 94402-1037
Transaction Type	Mortgage
Record Updated	Feb 5, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	331 WARREN RD, SAN MATEO, CA 94402-1037

Mortgage

Document Number	0000126943
Date	Nov 12, 2020
Instrument	2020-126943

Lender

Name	FREMONT BANK
Type	Bank
Address	LIVERMORE, CA 94551

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	360 Months
Due	Nov 1, 2050

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

July 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	331 WARREN RD, SAN MATEO, CA 94402-1037
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	AMROCK TITLE CALIFORNIA INC

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000074621
Date	Jul 30, 2020
Instrument	2020-074621

Lender

Name	JPMORGAN CHASE BANK NA
Type	Bank
Address	COLUMBUS, OH 43240

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Aug 1, 2050

February 2017: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	Feb 6, 2017
Property Address	331 WARREN RD, SAN MATEO, CA 94402-1037
Document Number	0000011775
Map Reference	MAP D PG55
Instrument Date	Jan 25, 2017
Instrument	2017-011775
Transaction Type	Transfer
Record Updated	Aug 9, 2021
Title Company	CHICAGO TITLE COMPANY

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
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	331 WARREN RD, SAN MATEO, CA 94402-1037

Mortgage

Document Number	0000011776
Date	Feb 6, 2017
Instrument	2017-011776

Lender

Name	JPMORGAN CHASE BANK NA
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Mar 1, 2047

February 2017: Affidavit of Death, Transfer

Document Type	Affidavit of Death
Jurisdiction	SAN MATEO CA
Recording Date	Feb 6, 2017
Property Address	331 WARREN RD, SAN MATEO, CA 94402-1037
Document Number	0000011773
Instrument Date	Jan 23, 2017
Instrument	11773
Transaction Type	Transfer
Record Updated	Feb 22, 2017
Title Company	CHICAGO TITLE COMPANY, CHICAGO TITLE CO

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	684 BELLMEADE WAY BRENTWOOD CA 945131932, BRENTWOOD, CA 94513-1932

Tax Assessment & Valuation

Source: San Mateo County assessment roll, as of July 15, 2026

Property Jurisdictions

Type	Name
State	California
County	San Mateo County
Municipality	San Mateo City
Elementary School District	San Mateo-Foster City Elementary School District (KG - 08)
Secondary School District	San Mateo Union High School District (09 - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$2,367,590 (+2%) Land $1,183,795 Building $1,183,795
2025	$27,897.00 (+4.02%)	$2,321,168 (+4.04%) Land $1,160,584 Building $1,160,584
2023	$26,819.00 (-0.23%)	$2,231,036 Land $1,115,518 Building $1,115,518	$2,011,860
2022	$26,882.00

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Flood

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 Policies	3 in force
Nearby Flood Claims	1 (2012)
Claims Outside the SFHA	1 of 1
Most Recent Claim	Mar 2012 · 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.

Wildfire

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.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water System	CALIFORNIA WATER SERVICE - SAN MATEO private · serves 103,536 people · EPA ID CA4110008
Water Source	Purchased surface water from SAN FRANCISCO REGIONAL WATER SYSTEM
Last State Inspection	Mar 2025
Lead	4 ppb (2023–2025) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	None 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.

Internet Providers

Source: FCC Broadband Data Collection, based on 561 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
AT&T Fiber · DSL in parts of the area	5,000 / 5,000
Xfinity Cable	2,000 / 250
Astound Broadband Cable	1,500 / 50
Sonic Telecom Fiber	1,000 / 1,000
Verizon Fixed Wireless	1,000 / 75

May also be available: Etheric Networks, T-Mobile.

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