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20 Warren Rd, San Mateo, CA 94401 Property Records

San Mateo County property record for 20 Warren Rd, San Mateo, CA 94401 · Last verified July 2026

Property Summary

Property TypeSingle Family Home
Details3 bd · 3 ba · 2,470 sqft · built 1956
Lot Size0.361 acres (15,729 sqft)
Owner2 Individual Names on File
Last Sale$4,500,000 (Dec 2021)
Tax Bill$39,555 (2025)
Deeds & MortgagesFeb 2022 Mortgage
Dec 2021 Sale
+ 1 more
Flood ZoneZone X (minimal risk)
APN032-061-030

Property Details

APN / Parcel Number

Primary APN032-061-030

Interior

Bedrooms3 Beds
Full Baths3 Baths
Total Rooms7 Rooms
Stories1 Story
Building Area2,470 sqft Living Area
1st Floor Area2,210 sqft
Family RoomFamily Room

Exterior

Year BuiltBuilt 1956
Effective Year BuiltEffective 1956
Lot Area15,729 sqft (0.361 acres)
Lot Dimensions174 ft deep x 91 ft wide
Garage Area600 sqft
Parking Spaces2 Parking Spaces

Utilities, Heating & Cooling

Cooling SystemCentral
Heating SystemCentral

Location & Zoning

Street Address20 WARREN RD
CitySAN MATEO
StateCA
Zip94401-3718
Property CategoryResidential
Property TypeResidential > Single Family > Home
Legal Description91.79 FT X 156.52 FT MOL ON NWLY LINE OF WARREN RD PTN OF LOTS 1 2 3 HAWLEYS SUB RSM C/57 CITY OF SAN MATEO
Legal SubdivisionHAWLEYS SUB
Legal Lot Number1
JurisdictionSAN MATEO CA
Township / Civil DivisionSAN MATEO
Census Block Group1
Census Block1000
Census Tract605800

Owner

Source: San Mateo County records · APN 032-061-030

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 Record2 Individual Names on File
Mailing Address20 WARREN RD, SAN MATEO, CA 94401-3718
OccupancyOwner Occupied
Owner TypeIndividual
VestingCommunity Property

Deeds, Mortgages & Sale History

DateDocument
Feb 10, 2022Deed of Trust, Mortgage · Conventional Mortgage
ROCKET MORTGAGE LLC
Dec 10, 2021Grant Deed, Transfer
LAWYERS TITLE COMPANY/CA, LAWYERS TITLE COMPANY
Dec 26, 2018Quit Claim Deed, Transfer
ATTORNEY ONLY

Assessor's Deed Record

Deed Names2 Verified Names on Deed
Last SaleDec 10, 2021 · Amount on Record
Deed SaleDec 10, 2021 · Amount on Record
Prior SaleJul 11, 2000 · Amount on Record
Deed Document Number2021168861
Prior Transfer DateNov 29, 2018
Prior Transfer Doc0000100450
Record UpdatedSep 20, 2026

February 2022: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionSAN MATEO CA
Property Address20 WARREN RD, SAN MATEO, CA 94401-3718
Transaction TypeMortgage
Record UpdatedMar 09, 2022
Title CompanyCHICAGO TITLE COMPANY

Transferred To (Grantee/Buyer)

NameVerified Name
Address20 WARREN RD, SAN MATEO, CA 94401-3718

Mortgage

Document Number0000012295
DateFeb 10, 2022
Instrument2022-012295
Lender
NameROCKET MORTGAGE LLC
TypeMortgage Company
AddressDETROIT, MI 48226
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term361 Months
DueMar 01, 2052

December 2021: Grant Deed, Transfer

Document TypeGrant Deed
JurisdictionSAN MATEO CA
Recording DateDec 10, 2021
Property Address20 WARREN RD, SAN MATEO, CA 94401-3718
Document Number0000168861
Map ReferenceMB 4 PG 48
Instrument DateDec 08, 2021
Instrument2021-168861
Transaction TypeTransfer
Record UpdatedDec 30, 2021
Title CompanyLAWYERS TITLE COMPANY/CA, LAWYERS TITLE COMPANY

Transaction

AmountAmount Recorded
Tax$27,450.00
Amount AccuracyRounded by County
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipCommunity Property with Right of Survivorship
Address20 WARREN RD, SAN MATEO, CA 94401-3718

December 2018: Quit Claim Deed, Transfer

Document TypeQuit Claim Deed
JurisdictionSAN MATEO CA
Recording DateDec 26, 2018
Property Address20 WARREN RD, SAN MATEO, CA 94401-3718
Document Number0000100450
Instrument DateNov 29, 2018
Instrument100450
Transaction TypeTransfer
Record UpdatedJan 10, 2019
Title CompanyATTORNEY ONLY

Transaction

Tax$0.00
Additional
  • Quitclaim
  • Intrafamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipPersonal Trust
Address1763 HEKPA DR SOUTH LAKE TAHOE CA 961504700, SOUTH LAKE TAHOE, CA 96150-4700

Tax Assessment & Valuation

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

Property Jurisdictions

TypeName
StateCalifornia
CountySan Mateo County
MunicipalitySan Mateo City
Elementary School DistrictSan Mateo-Foster City Elementary School District (KG - 08)
Secondary School DistrictSan Mateo Union High School District (09 - 12)

Tax Bill & Assessment History

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

YearTax BillAssessed ValueAssessed Market Value
2026$3,688,000 (+9.83%) Land $2,778,000 Building $910,000
2025$39,555.00 (-6.74%) Homeowner's exemption$3,358,000 (-3.89%) Land $2,529,500 Building $828,500
2023$42,415.00 (-24.74%) Homeowner's exemption$3,494,000 Land $2,632,000 Building $862,000$3,214,980
2022$56,355.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, San Mateo County (06081C), updated September 10, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060816058001, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026

Flood

FEMA Flood ZoneZone X
Special Flood Hazard AreaNo
Flood HazardMinimal
500-Year FloodplainNo
Nearby Flood Policies3 in force
Nearby Flood Claims1 (2012)
Claims Outside the SFHA1 of 1
Most Recent ClaimMar 2012, rainfall accumulation

Wildfire

Wildfire RiskNot rated
no burnable land in reach
Wildfire LikelihoodNegligible
ExposureNone
beyond ember reach

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.

Internet Providers

Source: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 713 locations within about half a mile of this property

ProviderTechnologyDownload / Upload (Mbps)
AT&TFiber5,000 / 5,000
XfinityCable2,000 / 250
Radiate HoldingsCable1,500 / 50
Sonic TelecomFiber1,000 / 1,000
Etheric Communications, LLC.Fixed Wireless (licensed-by-rule)250 / 100
T-Mobile USAFixed Wireless100 / 20

May also be available at this address: Verizon, AT&T, California Internet. Availability varies by address; speeds are provider-advertised maximums, not measured.

Mobile Coverage

5G and 4G LTE

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