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828 Irwin Dr, Hillsborough (Burlingame), CA 94010 Property Records

San Mateo County property record for 828 Irwin Dr, Hillsborough, CA 94010

Property Summary

Property TypeSingle Family Home
Details5 bd · 5.5 ba · 6,350 sqft · built 1926
Lot Size1.13 acres (49,570 sqft)
Owner2 Company Names on Record
Last Sale$12,500,000 (Oct 2023)
Tax Bill$148,594 (2025)
Deeds & MortgagesOct 2023 Sale & Mortgage
Flood ZoneZone X (minimal risk)
APN028-083-020

Property Details

APN / Parcel Number

Primary APN028-083-020

Interior

Bedrooms5 Beds
Full Baths5.5 Baths
Half Baths1 Half Bath
Total Rooms11 Rooms
Stories2 Stories
Building Area6,350 sqft Living Area
Gross Area7,540 sqft
1st Floor Area2,480 sqft
2nd Floor Area2,450 sqft
Basement Area530 sqft
Family RoomFamily Room
StudyStudy

Exterior

Year BuiltBuilt 1926
Effective Year BuiltEffective 1926
Lot Area49,570 sqft
Garage TypeAttached
Garage Area660 sqft
Parking Spaces2 Parking Spaces

Utilities, Heating & Cooling

Cooling SystemCentral
Heating SystemCentral

Location & Zoning

Street Address828 IRWIN DR
CityHILLSBOROUGH
StateCA
Zip94010-6328
Property CategoryResidential
Property TypeResidential > Single Family > Home
Local Zoning CodeR10025
Legal DescriptionLOT 4 MAP OF IRWIN PROPERTY RSM 11/52 53 TOWN OF HILLSBOROUGH
Legal SubdivisionMAP OF IRWIN PROPERTY
Legal Lot Number4
JurisdictionSAN MATEO CA
Township / Civil DivisionSAN MATEO
Census Block Group1
Census Block1013
Census Tract605600

Owner

Source: San Mateo County records, as of July 15, 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 Record
Mailing Address828 IRWIN DR, HILLSBOROUGH, CA 94010-6328
OccupancyOwner Occupied
Owner TypeCompany
VestingTrust

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names2 Names on Deed
Last SaleOct 16, 2023 · Amount on Record
Deed SaleOct 16, 2023 · Amount on Record
Prior SaleApr 9, 2010 · Amount on Record
Deed Document Number202352139
Prior Transfer DateJul 14, 1994
Prior Transfer Doc0000144109
Record UpdatedOct 29, 2026

October 2023: Grant Deed, Transfer

Document TypeGrant Deed
JurisdictionSAN MATEO CA
Recording DateOct 16, 2023
Property Address828 IRWIN DR, HILLSBOROUGH, CA 94010-6328
Document Number0000052139
Map ReferenceMB 11 PG 52&53
Instrument DateOct 4, 2023
Instrument2023-052139
Transaction TypeTransfer
Record UpdatedNov 8, 2023
Title CompanyLAWYERS TITLE COMPANY/CA, LAWYERS TITLE COMPANY

Transaction

AmountAmount Recorded
DownpaymentDownpayment on Record
Loan-to-Value (LTV)LTV on Record
Tax$13,750.00
Amount AccuracyRounded by County
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipLiving Trust
Address828 IRWIN DR, HILLSBOROUGH, CA 94010-6328

Mortgage

Document Number0000052140
DateOct 16, 2023
Instrument2023-052140
Lender
NameBANK OF AMERICA NA
TypeBank
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term60 Months
DueOct 16, 2028

Tax Assessment & Valuation

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

Property Jurisdictions

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

Tax Bill & Assessment History

YearTax BillAssessed ValueAssessed Market Value
2026$13,005,000 (+2%) Land $8,011,080 Building $4,993,920
2025$148,594.00 (+61.3%) Homeowner's exemption$12,750,000 (+65.75%) Land $7,854,000 Building $4,896,000
2023$92,125.00 (+4.3%) Homeowner's exemption$7,692,338 Land $3,846,169 Building $3,846,169$8,485,110
2022$88,325.00

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

Flood

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 Policies4 in force
Nearby Flood Claims3 (1998–2023)
Claims Outside the SFHA3 of 3
Most Recent ClaimJan 2023 · Severe Winter Storms, Flooding, Landslides, And Mudslides

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

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire RiskLow
lower than 97% of the US · lower than 97.8% of California
Wildfire LikelihoodUnder 0.01% annual chance
ExposureDirect
burnable vegetation

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 SystemTOWN OF HILLSBOROUGH
serves 11,766 people · EPA ID CA4110016
Water SourcePurchased surface water from SAN FRANCISCO REGIONAL WATER SYSTEM
Last State InspectionMar 2026
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 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 189 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
Xfinity
Cable		2,000 / 250

May also be available: AT&T, Etheric Networks, Sonic Telecom, Verizon.

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