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21 Thomas Ave, Brisbane, CA 94005 Property Records

San Mateo County property record for 21 Thomas Ave, Brisbane, CA 94005

Property Summary

Property TypeMulti-Family Dwellings
Details15 bd · 1 ba · 9,097 sqft · built 1974
Lot Size0.23 acres (10,019 sqft)
Owner2 Company Names on File
Last Sale$1,925,000 (Oct 2008)
Tax Bill$28,714 (2025)
Deeds & MortgagesSep 2026 Mortgage
Aug 2021 Mortgage
Flood ZoneZone X (minimal risk)
APN007-350-270

Property Details

APN / Parcel Number

Primary APN007-350-270

Interior

Bedrooms15 Beds
Full Baths1 Bath
Total Rooms35 Rooms
Units11 Units
Stories3 Stories
Building Area9,097 sqft Living Area

Exterior

Year BuiltBuilt 1974
Effective Year BuiltEffective 1974
Architectural StyleMulti-Family
Lot Area10,019 sqft (0.23 acres)
Lot Dimensions95 ft deep x 105 ft wide
TerrainAbove Road/Slope
View / LotCul-De-Sac
Parking Spaces14 Parking Spaces

Location & Zoning

Street Address21 THOMAS AVE
CityBRISBANE
StateCA
Zip94005-1761
Property CategoryResidential
Property TypeResidential > Multi-Unit > Multi-Family Dwellings
Local Zoning CodeR30000
Legal DescriptionPARCEL B PARCEL MAP VOL 22/34
Legal SubdivisionBRISBANE ACRES
JurisdictionSAN MATEO CA
Township / Civil DivisionSOUTH SAN FRANCISCO
Census Block Group5
Census Block5004
Census Tract600100

Owner

Source: San Mateo County records, as of October 21, 2026

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Owner of Record2 Company Names on File
Mailing Address1230 RALSTON AVE, BELMONT, CA 94002-1903
Owner TypeCompany
VestingTrust

Deeds, Mortgages & Sale History

DateDocument
Sep 22, 2026Deed of Trust, Mortgage · Conventional Mortgage
JPMORGAN CHASE BANK
Aug 18, 2021Deed of Trust, Mortgage · Commercial Mortgage
JPMORGAN CHASE BANK NA

Assessor's Deed Record

Deed Names2 Names on Deed
Last SaleOct 15, 2008 · Amount on File
Deed SaleOct 15, 2008 · Amount on File
Prior SaleDec 27, 2007 · Amount on File
Deed Document Number2008114120
Last Transfer DateJun 19, 2015
Transfer Doc0000067046
Record UpdatedOct 29, 2026

September 2026: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionSAN MATEO CA
Recording DateSep 22, 2026
Property Address21 THOMAS AVE, BRISBANE, CA 94005-1761
Document Number0000053463
Instrument DateSep 16, 2026
Instrument202653463
Transaction TypeMortgage
Record UpdatedOct 21, 2026
Title CompanyFIRST AMERICAN TITLE

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipFamily Trust, 221
Address1230 RALSTON AVE, BELMONT, CA 94002-1903

Mortgage

Document Number0000053463,
DateSep 22, 2026
Instrument202653463
Lender
NameJPMORGAN CHASE BANK
Agreement
TypeConventional Mortgage
AmountAmount on Record
Term360 Months
Interest
Rate TypeAdjustable Rate
Initial TypeAdjustable Rate
AdjustableAdjustable Rate Rider
Max Rate-1%

August 2021: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionSAN MATEO CA
Property Address21 THOMAS AVE, BRISBANE, CA 94005-1761
Transaction TypeMortgage
Record UpdatedOct 13, 2021
Title CompanyFIDELITY NATIONAL TITLE

Transferred To (Grantee/Buyer)

NameVerified Name
Address1230 RALSTON AVE, BELMONT, CA 94002-1903

Mortgage

Document Number0000120884
DateAug 18, 2021
Instrument2021-120884
Lender
NameJPMORGAN CHASE BANK NA
TypeBank
AddressCOPPELL, TX 75019
Agreement
TypeCommercial Mortgage
AmountAmount on Record
Interest
Rate TypeAdjustable Rate

Tax Assessment & Valuation

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

Property Jurisdictions

TypeName
StateCalifornia
CountySan Mateo County
MunicipalityBrisbane City
Elementary School DistrictBrisbane Elementary School District (KG - 08)
Secondary School DistrictJefferson Union High School District (09 - 12)

Tax Bill & Assessment History

YearTax BillAssessed Value
2026$2,528,507 (+2%) Land $1,615,620 Building $912,887
2025$28,714.00 (+4.34%)$2,478,930 (+4.04%) Land $1,583,942 Building $894,988
2023$27,520.00 (+4.03%)$2,382,673 Land $1,522,437 Building $860,236
2022$26,455.00

Assessed value is set for property tax purposes and is not a market price estimate.

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 Policies1 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

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

Wildfire RiskLow
lower than 66% of the US · lower than 80% of California
Wildfire Likelihood0.03% annual chance
ExposureIndirect
within ember reach
Adjoins Burnable LandYes

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 BRISBANE
serves 3,434 people · EPA ID CA4110002
Water SourcePurchased surface water from several systems
Last State InspectionDec 2025
Lead3 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 331 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		2,000 / 250
Unwired
Fixed Wireless		300 / 25
Etheric Networks
Fixed Wireless		250 / 100
T-Mobile
Fixed Wireless		100 / 20

May also be available: GeoLinks, Verizon.

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