170 Warren Rd, San Mateo, CA 94401 Property Records

San Mateo County property record for 170 Warren Rd, San Mateo, CA 94401

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 1,891 sqft · built 1922
Lot Size	0.134 acres (5,818 sqft)
Owner	2 Company Names on Record
Last Sale	$3,462,500 (Jul 2025)
Tax Bill	$29,280 (2025)
Deeds & Mortgages	Nov 2021 Transfer Nov 2021 Sale & Mortgage + 1 more
Flood Zone	Zone X (minimal risk)
APN	`032-081-070`

Property Details

APN / Parcel Number

Primary APN	`032-081-070`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Total Rooms	7 Rooms
Stories	1 Story
Building Area	1,891 sqft Living Area
Gross Area	2,181 sqft
1st Floor Area	1,530 sqft
Basement Area	290 sqft
Family Room	Family Room

Exterior

Year Built	Built 1922
Effective Year Built	Effective 1922
Lot Area	5,818 sqft (0.134 acres)
Lot Dimensions	118 ft deep x 48 ft wide
View / Lot	Alley
Garage Area	360 sqft
Parking Spaces	1 Parking Space

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	170 WARREN RD
City	SAN MATEO
State	CA
Zip	94401-3720
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R10010
Legal Description	ELY 3 FT 8 IN OF LOT 22 & LOT 25 BALDWIN HOWELL SUB RSM E/23CITY OF SAN MATEO
Legal Subdivision	BALDWIN HOWELL SUB
Legal Lot Number	22,25
Jurisdiction	SAN MATEO CA
Township / Civil Division	SAN MATEO
Census Block Group	1
Census Block	1000
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	170 WARREN RD, SAN MATEO, CA 94401-3720
Owner Type	Company
Vesting	Life Tenant

Deeds, Mortgages & Sale History

Date	Document
Nov 16, 2021	Intrafamily Transfer, Transfer FIRSTAMERICAN TITLE COMPANY, FIRST AMERICAN TITLE COMPANY
Nov 16, 2021	Grant Deed, Transfer · Conventional Mortgage GENERAL MORTGAGE CAPITAL CORP
Dec 16, 2020	Deed of Trust, Mortgage · Conventional Mortgage NATIONSTAR MORTGAGE LLC

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jul 3, 2025 · Amount on Record
Deed Sale	Jul 3, 2025 · Amount on Record
Prior Sale	Nov 16, 2021 · Amount on Record
Deed Document Number	202533976
Prior Transfer Date	Nov 11, 2021
Prior Transfer Doc	0000159195
Record Updated	Sep 20, 2026

November 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	SAN MATEO CA
Recording Date	Nov 16, 2021
Property Address	170 WARREN RD, SAN MATEO, CA 94401-3720
Document Number	0000159195
Map Reference	MB E PG 23
Instrument Date	Nov 11, 2021
Instrument	2021-159195
Transaction Type	Transfer
Record Updated	Dec 8, 2021
Title Company	FIRSTAMERICAN TITLE COMPANY, FIRST AMERICAN TITLE COMPANY

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	9 BAYHILL PL, HALF MOON BAY, CA 94019-2258

November 2021: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	Nov 16, 2021
Property Address	170 WARREN RD, SAN MATEO, CA 94401-3720
Document Number	0000159196
Map Reference	MB E PG 23
Instrument Date	Nov 10, 2021
Instrument	2021-159196
Transaction Type	Transfer
Record Updated	Jun 7, 2023
Title Company	FIRST AMERICAN TITLE COMPANY

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$21,197.50
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Revocable Trust
Address	170 WARREN RD, SAN MATEO, CA 94401-3720

Mortgage

Document Number	0000159197
Date	Nov 16, 2021
Instrument	2021-159197

Lender

Name	GENERAL MORTGAGE CAPITAL CORP
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Dec 1, 2051

December 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	170 WARREN RD, SAN MATEO, CA 94401-3720
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	TITLE365

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	170 WARREN RD, SAN MATEO, CA 94401-3720

Mortgage

Document Number	0000145506
Date	Dec 16, 2020
Instrument	2020-145506

Lender

Name	NATIONSTAR MORTGAGE LLC
Type	Mortgage Company
Address	COPPELL, TX 75019

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	181 Months
Due	Jan 1, 2036

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		$3,462,500 (+42.08%) Land $2,400,000 Building $1,062,500
2025	$29,280.00 (-14.2%)	$2,437,000 (-14.76%) Land $1,735,500 Building $701,500
2023	$34,126.00 (-17.42%)	$2,859,000 Land $2,036,000 Building $823,000	$2,565,450
2022	$41,325.00

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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