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330 Oneill Ave, Belmont, CA 94002 Property Records

San Mateo County property record for 330 Oneill Ave, Belmont, CA 94002

Property Summary

Property TypeSingle Family Home
Details4 bd · 2 ba · 1,380 sqft · built 1947
Lot Size0.115 acres (5,005 sqft)
Owner2 Individual Names on File
Last Sale$241,000 (Sep 2010)
Tax Bill$10,505 (2025)
Deeds & MortgagesDec 2020 Transfer
Oct 2020 Transfer
Flood ZoneZone X (moderate risk)
APN040-343-160

Property Details

APN / Parcel Number

Primary APN040-343-160

Interior

Bedrooms4 Beds
Full Baths2 Baths
Total Rooms7 Rooms
Stories1 Story
Building Area1,380 sqft Living Area
1st Floor Area1,080 sqft
Family RoomFamily Room

Exterior

Year BuiltBuilt 1947
Effective Year BuiltEffective 1947
Lot Area5,005 sqft (0.115 acres)
Lot Dimensions92 ft deep x 54 ft wide
View / LotCorner
Garage Area600 sqft
Parking Spaces2 Parking Spaces

Utilities, Heating & Cooling

Cooling SystemCentral
Heating SystemCentral

Location & Zoning

Street Address330 ONEILL AVE
CityBELMONT
StateCA
Zip94002-4005
Property CategoryResidential
Property TypeResidential > Single Family > Home
Local Zoning CodeR10006
Legal DescriptionLOT 14 BLOCK 6 HOMEVIEW MAP NO 1 RSM 25/56 57 CITY OF BELMONT
Legal SubdivisionHOMEVIEW MAP NO 1
Legal Block6
Legal Lot Number14
JurisdictionSAN MATEO CA
Township / Civil DivisionSAN MATEO
Census Block Group2
Census Block2020
Census Tract608600

Owner

330 Oneill Ave is owned and occupied by two individuals who acquired it in December 2020.

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

Owner of Record2 Individual Names on File
Mailing Address330 ONEILL AVE, BELMONT, CA 94002-4005
OccupancyOwner Occupied
Owner TypeIndividual

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
Dec 30, 2020Quit Claim Deed, Transfer
ATTORNEY ONLY
Oct 29, 2020Affidavit of Death, Transfer
ATTORNEY ONLY

Assessor's Deed Record

Deed Names2 Names on Deed
Last SaleSep 30, 2010 · Amount on File
Deed SaleSep 30, 2010 · Amount on File
Prior SaleMay 5, 2010 · Amount on File
Deed Document Number2010114415
Last Transfer DateDec 15, 2020
Transfer Doc0000154452
Record UpdatedOct 29, 2026

December 2020: Quit Claim Deed, Transfer

Document TypeQuit Claim Deed
JurisdictionSAN MATEO CA
Recording DateDec 30, 2020
Property Address330 ONEILL AVE, BELMONT, CA 94002-4005
Document Number0000154452
Instrument DateDec 15, 2020
Instrument154452
Transaction TypeTransfer
Record UpdatedFeb 4, 2021
Title CompanyATTORNEY ONLY

Transaction

Tax$0.00
Additional
  • Quitclaim
  • Intrafamily Transfer
  • Partial Interest

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipRevocable Trust
Address330 ONEILL AVE BELMONT CA 940024005, BELMONT, CA 94002-4005

October 2020: Affidavit of Death, Transfer

Document TypeAffidavit of Death
JurisdictionSAN MATEO CA
Recording DateOct 29, 2020
Property Address330 ONEILL AVE, BELMONT, CA 94002-4005
Document Number0000119569
Instrument DateMar 21, 2012
Instrument119569
Transaction TypeTransfer
Record UpdatedDec 4, 2020
Title CompanyATTORNEY ONLY

Transaction

Tax$0.00
Additional
  • Intrafamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address330 ONEILL AVE BELMONT CA 940024005, BELMONT, CA 94002-4005

Tax Assessment & Valuation

The 2025 property tax bill for 330 Oneill Ave was $10,505 with a homeowner's exemption.

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

Property Jurisdictions

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

Tax Bill & Assessment History

YearTax BillAssessed ValueAssessed Market Value
2026$751,376 (+2%) Land $375,688 Building $375,688
2025$10,505.00 Homeowner's exemption$736,644 Land $368,322 Building $368,322
2023$9,713.00 (+5.64%) Homeowner's exemption$708,040 Land $354,020 Building $354,020$1,356,660
2022$9,194.00

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

Flood

FEMA maps place 330 Oneill Ave in Zone X, an area of moderate flood risk.

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

FEMA Flood ZoneZone X
moderate risk
500-Year FloodplainYes
0.2% annual chance
Flood Insurance RequirementNot required
lenders may require it
Flood Insurance CostPremium on File
median of 10 policies
Nearby Flood Policies10 in force

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 330 Oneill Ave 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 SystemMID-PENINSULA WATER DISTRICT
serves 31,059 people · EPA ID CA4110001
Water SourcePurchased surface water from several systems
Last State InspectionFeb 2025
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 512 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
AT&T
Fiber · Fixed Wireless, DSL in parts of the area		5,000 / 5,000
Xfinity
Cable · Fiber in parts of the area		2,000 / 250
Etheric Networks
Fixed Wireless		250 / 100
T-Mobile
Fixed Wireless		100 / 20

May also be available: Astound Broadband, GeoLinks, Sonic Telecom, Verizon.

Nearby Properties on Oneill Ave

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