511 Warren Rd, San Mateo, CA 94402 Property Records

San Mateo County property record for 511 Warren Rd, San Mateo, CA 94402

Property Summary

Property Type	Single Family Home
Details	5 bd · 2.5 ba · 3,260 sqft · built 1925
Lot Size	0.167 acres (7,258 sqft)
Owner	2 Company Names on Record
Last Sale	$2,260,000 (Feb 2012)
Tax Bill	$35,024 (2025)
Deeds & Mortgages	Dec 2021 Line of Credit Dec 2021 Mortgage + 1 more
Flood Zone	Zone X (minimal risk)
APN	`031-051-260`

Property Details

APN / Parcel Number

Primary APN	`031-051-260`

Interior

Bedrooms	5 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Total Rooms	9 Rooms
Stories	2 Stories
Building Area	3,260 sqft Living Area
1st Floor Area	2,050 sqft
2nd Floor Area	1,210 sqft
Family Room	Family Room

Exterior

Year Built	Built 1925
Effective Year Built	Effective 1925
Lot Area	7,258 sqft (0.167 acres)
Lot Dimensions	90 ft deep x 75 ft wide
Garage Area	410 sqft
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	511 WARREN RD
City	SAN MATEO
State	CA
Zip	94402-1060
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R1000A
Legal Description	75 FT ON WARREN RD WLY POR OF LOT 247 SAN MATEO PARK SUB NO 3 RSM A/68 CITY OF SAN MATEO
Legal Subdivision	SAN MATEO PARK
Legal Lot Number	247
Jurisdiction	SAN MATEO CA
Township / Civil Division	SAN MATEO
Census Block Group	3
Census Block	3005
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 Company Names on Record
Mailing Address	511 WARREN RD, SAN MATEO, CA 94402-1060
Owner Type	Company
Vesting	Trust

Deeds, Mortgages & Sale History

Date	Document
Dec 29, 2021	Deed of Trust, Mortgage · Line of Credit FIRST REPUBLIC BANK
Dec 29, 2021	Deed of Trust, Mortgage · Conventional Mortgage FIRST REPUBLIC BANK
Jan 1, 2017	Loan Modification, Mortgage FIDELITY NATIONAL TITLE

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Feb 17, 2012 · Amount on Record
Deed Sale	Feb 17, 2012 · Amount on Record
Prior Sale	Jul 12, 2007 · Amount on Record
Deed Document Number	201221844
Prior Transfer Date	May 27, 1999
Prior Transfer Doc	0000096404
Record Updated	Sep 20, 2026

December 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	511 WARREN RD, SAN MATEO, CA 94402-1060
Transaction Type	Mortgage
Record Updated	Jun 8, 2026
Title Company	E-CHICAGO TITLE, CHICAGO TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	511 WARREN RD, SAN MATEO, CA 94402-1060

Mortgage

Document Number	0000176910
Date	Dec 29, 2021
Instrument	2021-176910

Lender

Name	FIRST REPUBLIC BANK
Type	Bank
Address	SAN FRANCISCO, CA 94111

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	300 Months
Due	Dec 26, 2046

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

December 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	511 WARREN RD, SAN MATEO, CA 94402-1060
Transaction Type	Mortgage
Record Updated	Jun 8, 2026
Title Company	FIDELITY NATIONAL TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	511 WARREN RD, SAN MATEO, CA 94402-1060

Mortgage

Document Number	0000176909
Date	Dec 29, 2021
Instrument	2021-176909

Lender

Name	FIRST REPUBLIC BANK
Type	Bank
Address	SAN FRANCISCO, CA 94111

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Jan 1, 2052

Interest

Rate Type	Adjustable Rate
Rate	2.45%
Type Change Date	Jan 1, 2032
Change Frequency	Monthly
Min Rate At Change	2.95%
Max Rate At Change	10.9%
Index	1-Year CMT
Max Rate	10.9%

January 2017: Loan Modification, Mortgage

Document Type	Loan Modification
Jurisdiction	SAN MATEO CA
Property Address	511 WARREN RD, SAN MATEO, CA 94402-1060
Document Number	0000010558
Instrument Date	Jan 1, 2017
Transaction Type	Mortgage
Record Updated	Feb 16, 2017
Title Company	FIDELITY NATIONAL TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Revocable Trust
Address	511 WARREN RD SAN MATEO CA 944021060, SAN MATEO, CA 94402-1060

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		$2,895,452 (+2%) Land $1,447,726 Building $1,447,726
2025	$35,024.00 (+3.8%)	$2,838,680 (+4.04%) Land $1,419,340 Building $1,419,340
2023	$33,743.00 (-0.71%)	$2,728,452 Land $1,364,226 Building $1,364,226	$2,953,800
2022	$33,985.00

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	2 in force
Nearby Flood Claims	3 (1999–2013)
Claims Outside the SFHA	3 of 3
Most Recent Claim	Jan 2013 · other causes

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	Low lower than 98% of the US · lower than 98.4% 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.

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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