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344 E 40th Ave, San Mateo, CA 94403 Property Records

San Mateo County property record for 344 E 40th Ave, San Mateo, CA 94403

Property Summary

Property TypeSingle Family Home
Details4 bd · 2 ba · 1,830 sqft · built 1951
Lot Size0.115 acres (5,000 sqft)
OwnerIndividual Name on File
Tax Bill$8,075 (2025)
Deeds & MortgagesJan 2021 Transfer
Flood ZoneZone X (reduced by levee)
APN040-204-040

Property Details

APN / Parcel Number

Primary APN040-204-040

Interior

Bedrooms4 Beds
Full Baths2 Baths
Total Rooms8 Rooms
Building Area1,830 sqft Living Area
Gross Area2,220 sqft
1st Floor Area1,080 sqft
Basement Area390 sqft
Family RoomFamily Room

Exterior

Year BuiltBuilt 1951
Effective Year BuiltEffective 1951
Lot Area5,000 sqft (0.115 acres)
Lot Dimensions80 ft deep x 62 ft wide
Garage TypeBasement
Garage Area390 sqft
Parking Spaces2 Parking Spaces

Utilities, Heating & Cooling

Cooling SystemCentral
Heating SystemCentral

Location & Zoning

Street Address344 E 40TH AVE
CitySAN MATEO
StateCA
Zip94403-3658
Property CategoryResidential
Property TypeResidential > Single Family > Home
Local Zoning CodeR10006
Legal DescriptionLOT 4 BLOCK 27B RESUB BLOCKS 25 26 27 & PTN BLOCKS 11 24 28 SAN MATEO VILLAGE UNIT NO 3 RSM 31/46 CITY OF SAN MATEO
Legal SubdivisionSAN MATEO VILLAGE UNIT NO 3
Legal Block27B,2
Legal Lot Number4
JurisdictionSAN MATEO CA
Township / Civil DivisionSAN MATEO
Census Block Group3
Census Block3011
Census Tract608501

Owner

Source: San Mateo County records · APN 040-204-040

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 RecordIndividual Name on File
Mailing Address19002 CREST AVE, CASTRO VALLEY, CA 94546-2815
Owner TypeIndividual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed NamesVerified Name on Deed
Last Transfer DateJan 04, 2021
Transfer Doc0000004972
Record UpdatedSep 20, 2026

January 2021: Quit Claim Deed, Transfer

Document TypeQuit Claim Deed
JurisdictionSAN MATEO CA
Recording DateJan 12, 2021
Property Address344 E 40TH AVE, SAN MATEO, CA 94403-3658
Document Number0000004972
Instrument DateJan 04, 2021
Instrument4972
Transaction TypeTransfer
Record UpdatedFeb 11, 2021
Title CompanyNOT AVAILABLE

Transaction

Tax$0.00
Additional
  • Quitclaim
  • Intrafamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address450 N EL CAMINO REAL SAN MATEO CA 944013710, SAN MATEO, CA 94401-3710

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$452,918 (+2%) Land $136,647 Building $316,271
2025$8,075.00 (-4.49%)$444,038 (+4.04%) Land $133,968 Building $310,070
2023$8,455.00 (+6.92%)$426,798 Land $128,767 Building $298,031$1,721,700
2022$7,908.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, San Mateo County (06081C), as of September 10, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060816085013, as of September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition, as of 2020 · Last verified October 2026

Flood

FEMA Flood ZoneZone X
reduced by levee · depends on levee performance
Flood Insurance RequirementNot required
lenders may require it
Flood Insurance CostPremium on Record
median of 13 policies
Nearby Flood Policies13 in force
Nearby Flood Claims2 (1979–2010)
Claims Outside the SFHA1 of 2
Most Recent ClaimJan 2010 · other causes

Wildfire

Wildfire RiskNot rated
no burnable land within 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 as of December 31, 2025 · Last verified October 2026

ProviderMax Down / Up (Mbps)
AT&T
Fiber · Fixed Wireless, DSL in parts of the area		5,000 / 5,000
Xfinity
Cable		2,000 / 250
Radiate Holdings
Cable		1,500 / 50
Verizon
Fixed Wireless		300 / 20
Starlink
Satellite		280 / 30
Etheric Communications, LLC.
Fixed Wireless		250 / 100
T-Mobile USA
Fixed Wireless		100 / 20

May also be available: California Internet, Sonic Telecom.

Based on FCC filings for 734 locations within half a mile of this property.

Drinking Water

Source: EPA Safe Drinking Water Information System, water system CA4110008, as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026

Water SystemCALIFORNIA WATER SERVICE - SAN MATEO
private · serves 103,536 people
Water SourcePurchased surface water from SAN FRANCISCO REGIONAL WATER SYSTEM
Last State InspectionMar 2025
Lead4 ppb (2023–2025)
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 as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.

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