343 Warren Rd, San Mateo, CA 94402 Property Records

San Mateo County property record for 343 Warren Rd, San Mateo, CA 94402

Property Summary

Property Type	Single Family Home
Details	4 bd · 3 ba · 1,930 sqft · built 1926
Lot Size	0.146 acres (6,360 sqft)
Owner	2 Individual Names on File
Last Sale	$3,650,000 (Dec 2025)
Tax Bill	$34,395 (2025)
Deeds & Mortgages	Dec 2025 Sale & Mortgage Jun 2021 Sale & Mortgage + 2 more
Flood Zone	Zone X (minimal risk)
APN	`032-032-150`

Property Details

APN / Parcel Number

Primary APN	`032-032-150`

Interior

Bedrooms	4 Beds
Full Baths	3 Baths
Total Rooms	9 Rooms
Stories	1 Story
Building Area	1,930 sqft Living Area
Gross Area	2,440 sqft
1st Floor Area	880 sqft
Basement Area	510 sqft
Family Room	Family Room
Study	Study

Exterior

Year Built	Built 1926
Effective Year Built	Effective 1926
Lot Area	6,360 sqft (0.146 acres)
Lot Dimensions	94 ft deep x 65 ft wide
View / Lot	Corner
Garage Type	Basement
Garage Area	510 sqft
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	343 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	WLY 79.92 FT OF LOT 172 SAN MATEO PARK SUB NO 2 RSM D/55 CITY OF SAN MATEO
Legal Subdivision	SAN MATEO PARK
Legal Lot Number	172
Jurisdiction	SAN MATEO CA
Township / Civil Division	SAN MATEO
Census Block Group	1
Census Block	1009
Census Tract	605800

Owner

343 Warren Rd is owned and occupied by two individuals who bought it in December 2025.

Source: San Mateo County records, as of August 6, 2026

Owner of Record	2 Individual Names on File
Mailing Address	343 WARREN RD, SAN MATEO, CA 94402-1037
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

Date	Document
Dec 5, 2025	Grant Deed, Transfer · Conventional Mortgage JPMORGAN CHASE BANK NA
Jun 10, 2021	Grant Deed, Transfer · Stand-Alone First Mortgage NOVA LLC
Dec 10, 2020	Quit Claim Deed, Transfer ATTORNEY ONLY
Jun 6, 2019	Grant Deed, Transfer NORTH AMERICAN TITLE

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Dec 5, 2025 · Amount on File
Deed Sale	Dec 5, 2025 · Amount on File
Prior Sale	Jun 10, 2021 · Amount on File
Deed Document Number	202566710
Prior Transfer Date	May 16, 2006
Prior Transfer Doc	0000079507
Record Updated	Oct 29, 2026

December 2025: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	Dec 5, 2025
Property Address	343 WARREN RD, SAN MATEO, CA 94402-1037
Document Number	0000066710
Map Reference	MB D PG 55
Instrument Date	Dec 3, 2025
Instrument	2025-066710
Transaction Type	Transfer
Record Updated	Dec 31, 2025
Title Company	FIRSTAMERICAN TITLE COMPANY, FIRST AMERICAN TITLE COMPANY

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$22,265.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	343 WARREN RD, SAN MATEO, CA 94402-1037

Mortgage

Document Number	0000066711
Date	Dec 5, 2025
Instrument	2025-066711

Lender

Name	JPMORGAN CHASE BANK NA
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Jan 1, 2056

Interest

Rate Type	Adjustable Rate
Rate	5.49%
Type Change Date	Jan 1, 2033
Change Frequency	6 Months
Min Rate At Change	2.75%
Max Rate At Change	10.4%
Index	SOFR Average 30-Day
Max Rate	10.4%

June 2021: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	Jun 10, 2021
Property Address	343 WARREN RD, SAN MATEO, CA 94402-1037
Document Number	0000089618
Map Reference	MB 3 PG 34
Instrument Date	May 9, 2021
Instrument	2021-089618
Transaction Type	Transfer
Record Updated	Jun 30, 2021
Title Company	NORTH AMERICAN TITLE COMPANY, NORTH AMERICAN TITLE CO INC

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$5,004.80
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	343 WARREN RD, SAN MATEO, CA 94402-1037

Mortgage

Document Number	0000089619
Date	Jun 10, 2021
Instrument	2021-089619

Lender

Name	NOVA LLC
Type	Non-Lending Institution

Agreement

Type	Stand-Alone First Mortgage
Amount	Amount on Record
Term	61 Months
Due	Jul 10, 2026

December 2020: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	SAN MATEO CA
Recording Date	Dec 10, 2020
Property Address	343 WARREN RD, SAN MATEO, CA 94402-1037
Document Number	0000143365
Instrument Date	Nov 21, 2020
Instrument	143365
Transaction Type	Transfer
Record Updated	Jan 22, 2021
Title Company	ATTORNEY ONLY

Transaction

Tax	$0.00
Additional	Quitclaim Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	983 BARROILHET DR HILLSBOROUGH CA 940106519, HILLSBOROUGH, CA 94010-6519

June 2019: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	Jun 6, 2019
Property Address	343 WARREN RD, SAN MATEO, CA 94402-1037
Document Number	0000042954
Instrument Date	May 31, 2019
Instrument	42954
Transaction Type	Transfer
Record Updated	Jun 28, 2019
Title Company	NORTH AMERICAN TITLE

Transaction

Amount	Amount on Record
Tax	$3,245.00
Amount Accuracy	Full Value
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Revocable Trust
Address	983 BARROILHET DR HILLSBOROUGH CA 940106519, HILLSBOROUGH, CA 94010-6519

Tax Assessment & Valuation

The 2025 property tax bill for 343 Warren Rd was $34,395, down 5% from the year before.

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
2026		$3,650,000 (+31.44%) Land $2,462,500 Building $1,187,500
2025	$34,395.00 (-5%)	$2,777,000 Land $1,686,500 Building $1,090,500
2024	$36,206.00 (-0.24%)
2023	$36,292.00 (-6.25%)	$3,000,000 Land $1,822,000 Building $1,178,000
2022	$38,710.00

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

Flood

FEMA maps place 343 Warren Rd in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 2012.

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

The area around 343 Warren Rd 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.

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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