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504 Upton St, Redwood City, CA 94062 Property Records

San Mateo County property record for 504 Upton St, Redwood City, CA 94062

Property Summary

Property TypeSingle Family Home
Details2 bd · 1 ba · 880 sqft · built 1949
Lot Size0.253 acres (11,000 sqft)
Owner2 Trust Names on File
Last Sale$660,000 (Dec 2009)
Tax Bill$11,691 (2025)
Deeds & MortgagesOct 2022 Transfer
Nov 2018 Transfer
Flood ZoneZone X (minimal risk)
APN058-295-210

Property Details

APN / Parcel Number

Primary APN058-295-210

Interior

Bedrooms2 Beds
Full Baths1 Bath
Total Rooms4 Rooms
Stories1 Story
Building Area880 sqft Living Area
1st Floor Area880 sqft
Family RoomFamily Room

Exterior

Year BuiltBuilt 1949
Effective Year BuiltEffective 1949
Lot Area11,000 sqft (0.253 acres)
Lot Dimensions110 ft deep x 100 ft wide
Garage Area230 sqft
Parking Spaces1 Parking Space

Utilities, Heating & Cooling

Cooling SystemCentral
Heating SystemCentral

Location & Zoning

Street Address504 UPTON ST
CityREDWOOD CITY
StateCA
Zip94062-2942
Property CategoryResidential
Property TypeResidential > Single Family > Home
Local Zoning CodeR10006
Legal DescriptionLOTS 4 & 6 BLK 4 KENSINGTON SQUARE RSM 12/74 75
Legal SubdivisionKENSINGTON SQUARE
Legal Block4
Legal Lot Number4,6
JurisdictionSAN MATEO CA
Township / Civil DivisionSAN MATEO
Census Block Group1
Census Block1007
Census Tract609800

Owner

504 Upton St is held in a trust since October 2022.

Source: San Mateo County records, as of July 15, 2026

Owner of Record2 Trust Names on File
Mailing Address414 SONORA DR, SAN MATEO, CA 94402-2342
Owner TypeCompany
VestingTrust

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

DateDocument
Oct 18, 2022Intrafamily Transfer, Transfer
Nov 26, 2018Quit Claim Deed, Transfer
Quitclaim

Assessor's Deed Record

Deed Names2 Names on Deed
Last SaleDec 23, 2009 · Amount on File
Deed SaleDec 23, 2009 · Amount on File
Prior SaleNov 8, 2001 · Amount on File
Deed Document Number2009166227
Last Transfer DateOct 11, 2022
Transfer Doc0000073992
Record UpdatedSep 20, 2026

October 2022: Intrafamily Transfer, Transfer

Document TypeIntrafamily Transfer
JurisdictionSAN MATEO CA
Recording DateOct 18, 2022
Property Address504 UPTON ST, REDWOOD CITY, CA 94062-2942
Document Number0000073993
Map ReferenceMB 12 PG 74&75
Instrument DateJun 28, 2022
Instrument2022-073993
Transaction TypeTransfer
Record UpdatedJun 7, 2023

Transaction

Tax$0.00
Amount AccuracyTransfer Tax Exempt
Additional
  • Intrafamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipFamily Trust
Address414 SONORA DR, SAN MATEO, CA 94402-2342

November 2018: Quit Claim Deed, Transfer

Document TypeQuit Claim Deed
JurisdictionSAN MATEO CA
Recording DateNov 26, 2018
Property Address504 UPTON ST, REDWOOD CITY, CA 94062-2942
Document Number0000091449
Instrument DateNov 23, 2018
Instrument91449
Transaction TypeTransfer
Record UpdatedDec 11, 2018

Transaction

Tax$0.00
Additional
  • Quitclaim

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address414 SONORA DR SAN MATEO CA 944022342, SAN MATEO, CA 94402-2342

Tax Assessment & Valuation

The 2025 property tax bill for 504 Upton St was $11,691.

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

Property Jurisdictions

TypeName
StateCalifornia
CountySan Mateo County
Elementary School DistrictRedwood City Elementary School District (KG - 08)
Secondary School DistrictSequoia Union High School District (09 - 12)

Tax Bill & Assessment History

YearTax BillAssessed ValueAssessed Market Value
2026$868,967 (+2%) Land $789,978 Building $78,989
2025$11,691.00$851,930 Land $774,489 Building $77,441
2023$11,046.00 (+6.05%)$818,850 Land $744,415 Building $74,435$1,008,000
2022$10,416.00

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

Flood

FEMA maps place 504 Upton St in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1996.

Source: FEMA National Flood Hazard Layer, effective September 10, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood ZoneZone X
minimal risk
Flood Insurance RequirementNot required
lenders may require it
Nearby Flood Policies1 in force
Nearby Flood Claims1 (1996)
Claims Outside the SFHA1 of 1
Most Recent ClaimMar 1996 · 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 504 Upton St 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 RiskNot 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 SystemCITY OF REDWOOD CITY
serves 90,043 people · EPA ID CA4110022
Water SourcePurchased surface water from several systems
Last State InspectionJul 2024
LeadUnder 1 ppb (2022–2024)
action level 15 ppb

Violations Reported to EPA

Water QualityNone
last 10 years
Treatment and ProcedureNone
last 10 years
Monitoring and ReportingNone
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 677 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
AT&T
Fiber · DSL · Fixed Wireless in parts of the area		5,000 / 5,000
Xfinity
Cable		2,000 / 250
Verizon
Fixed Wireless		300 / 20

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

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