1. Home
  2. California
  3. San Mateo County
  4. Millbrae
  5. Helen Dr

509 Helen Dr, Millbrae, CA 94030 Property Records

San Mateo County property record for 509 Helen Dr, Millbrae, CA 94030

Property Summary

Property TypeSingle Family Home
Details2 bd · 3 ba · 1,600 sqft · built 1948
Lot Size0.115 acres (5,000 sqft)
Owner2 Company Names on File
Last Sale$865,000 (Sep 2007)
Tax Bill$15,243 (2025)
Deeds & MortgagesMar 2022 Transfer
Oct 2021 Mortgage
Flood ZoneZone X (minimal risk)
APN021-331-310

Property Details

APN / Parcel Number

Primary APN021-331-310

Interior

Bedrooms2 Beds
Full Baths3 Baths
Total Rooms6 Rooms
Stories1 Story
Building Area1,600 sqft Living Area
1st Floor Area1,290 sqft
Family RoomFamily Room

Exterior

Year BuiltBuilt 1948
Effective Year BuiltEffective 1948
Lot Area5,000 sqft (0.115 acres)
Lot Dimensions100 ft deep x 50 ft wide
Garage Area410 sqft
Parking Spaces2 Parking Spaces

Utilities, Heating & Cooling

Cooling SystemCentral
Heating SystemCentral

Location & Zoning

Street Address509 HELEN DR
CityMILLBRAE
StateCA
Zip94030-1619
Property CategoryResidential
Property TypeResidential > Single Family > Home
Local Zoning CodeR10006
Legal DescriptionLOT 37 BLOCK 18 MEADOW GLEN UNIT NO 2 RSM 29/27 CITY OF MILLBRAE
Legal SubdivisionMEADOW GLEN UNIT NO 2
Legal Block18
Legal Lot Number37
JurisdictionSAN MATEO CA
Township / Civil DivisionSOUTH SAN FRANCISCO
Census Block Group1
Census Block1000
Census Tract604700

Owner

Source: San Mateo County records · APN 021-331-310

Assessment roll updated July 15, 2026 · Last verified August 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record2 Company Names on File
Mailing Address509 HELEN DR, MILLBRAE, CA 94030-1619
OccupancyOwner Occupied
Owner TypeCompany
VestingTrust

Deeds, Mortgages & Sale History

DateDocument
Mar 25, 2022Intrafamily Transfer, Transfer
Oct 20, 2021Intrafamily Transfer, Transfer · Conventional Mortgage
PENNYMAC LOAN SERVICES LLC

Assessor's Deed Record

Deed Names2 Verified Names on Deed
Last SaleSep 21, 2007 · Amount on Record
Deed SaleSep 21, 2007 · Amount on Record
Prior SaleJun 24, 2005 · Amount on Record
Deed Document Number2007139962
Last Transfer DateMar 22, 2022
Transfer Doc0000026170
Record UpdatedSep 20, 2026

March 2022: Intrafamily Transfer, Transfer

Document TypeIntrafamily Transfer
JurisdictionSAN MATEO CA
Recording DateMar 25, 2022
Property Address509 HELEN DR, MILLBRAE, CA 94030-1619
Document Number0000026170
Map ReferenceMB 29 PG 27
Instrument DateMar 22, 2022
Instrument2022-026170
Transaction TypeTransfer
Record UpdatedJun 07, 2023

Transaction

Tax$0.00
Amount AccuracyTransfer Tax Exempt
Additional
  • Intrafamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipRevocable Trust
Address509 HELEN DR, MILLBRAE, CA 94030-1619

October 2021: Intrafamily Transfer, Transfer

Document TypeIntrafamily Transfer
JurisdictionSAN MATEO CA
Recording DateOct 20, 2021
Property Address509 HELEN DR, MILLBRAE, CA 94030-1619
Document Number0000147941
Map ReferenceMB 29 PG 27
Instrument DateSep 30, 2021
Instrument2021-147941
Transaction TypeTransfer
Record UpdatedAug 05, 2022
Title CompanyNOT AVAILABLE, FNTG LENDERS DIRECT

Transaction

Tax$0.00
Amount AccuracyTransfer Tax Exempt
Additional
  • Intrafamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address509 HELEN DR, MILLBRAE, CA 94030-1619

Mortgage

Document Number0000147942
DateOct 20, 2021
Instrument2021-147942
Lender
NamePENNYMAC LOAN SERVICES LLC
TypeMortgage Company
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term361 Months
DueNov 01, 2051

Tax Assessment & Valuation

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

Property Jurisdictions

TypeName
StateCalifornia
CountySan Mateo County
MunicipalityMillbrae City
Elementary School DistrictMillbrae 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$1,208,395 (+2%) Land $579,450 Building $628,945
2025$15,243.00 (+4.29%) Homeowner's exemption$1,184,703 (+4.04%) Land $568,089 Building $616,614
2023$14,616.00 (+15.52%) Homeowner's exemption$1,138,702 Land $546,030 Building $592,672$1,569,060
2022$12,652.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, San Mateo County (06081C), as of September 10, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition, as of 2020 · Last verified October 2026

Flood

FEMA Flood ZoneZone X
minimal risk
Flood Insurance RequirementNot required
lenders may require it

Wildfire

Wildfire RiskLow
lower than 80% of the US · lower than 88% of California
Wildfire Likelihood0.01% annual chance
ExposureDirect
burnable vegetation at the parcel

Values are read at the parcel center point; 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
Etheric Communications, LLC.
Fixed Wireless		250 / 100
T-Mobile USA
Fixed Wireless		100 / 20

May also be available: California Internet, Sail Internet Holdings, Verizon.

Based on FCC filings for 586 locations within half a mile of this property.

Drinking Water

Source: EPA Safe Drinking Water Information System, water system CA4110018, as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026

Water SystemCITY OF MILLBRAE
serves 22,795 people
Water SourcePurchased surface water from SAN FRANCISCO REGIONAL WATER SYSTEM
Last State InspectionApr 2025
LeadUnder 1 ppb (2023–2025)
action level 15 ppb

Violations Reported to EPA

Water QualityNone
last 10 years
Treatment and ProcedureNone
last 10 years
Monitoring and Reporting1
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.

Nearby Properties on Helen Dr

Nearby Streets

Search Property Records by Address or Parcel Number

Search by:

By searching, you agree to: Terms • Privacy • Disclosures