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643 Dearborn Ave, Helena, MT 59601 Property Records

Lewis And Clark County property record for 643 Dearborn Ave, Helena, MT 59601 · Last verified April 2026

Property Summary

Property TypeQuadplex
Details8 bd · 4 ba · 5,689 sqft · built 1900
Lot Size0.172 acres (7,492 sqft)
Owner2 Individual Names on File
Last Sale$884,450 (Jun 2023)
Tax Bill$4,413 (2025)
Deeds & MortgagesJun 2023 Mortgage
Feb 2021 Sale
Flood ZoneZone X (minimal risk)
APNR054394

Property Details

APN / Parcel Number

Primary APNR054394
Alternative APNs
  • 05-1887-25-4-80-01-0000
  • 0000003087

Interior

Bedrooms8 Beds
Full Baths4 Baths
Units4 Units
Stories2 Stories
Building Area5,689 sqft Total Area
1st Floor Area2,616 sqft
Upper Floors Area2,415 sqft
AtticAttic
Attic Area658 sqft
Basement Area2,571 sqft
Unfinished Basement2,571 sqft
Fireplaces1 Fireplace
FireplaceFireplace

Exterior

Year BuiltBuilt 1900
Effective Year BuiltEffective 1975
Architectural StyleQuadruplex
Exterior MaterialBrick
Construction TypeWood
Lot Area7,492 sqft (0.172 acres)
View / LotMajor Street/Thoroughfare

Exterior Amenities

PorchSlab
Porch Area63 sqft
Deck Area54 sqft
Utility Building600 sqft

Utilities, Heating & Cooling

Heating SystemHot Water
SewerMunicipal
Water SourceCommercial

Location & Zoning

Account Number0000003087
Street Address643 DEARBORN AVE
CityHELENA
StateMT
Zip59601-2766
Property CategoryResidential
Property TypeResidential > Multi-Unit > Quadplex
Legal DescriptionSTOREY, S25, T10 N, R04 W, BLOCK 14, LOT 1
Legal Range04W
Legal Township10N
Legal Section25
Legal SubdivisionSTOREY
Legal Block14
Legal Lot Number1
JurisdictionLEWIS AND CLARK MT
Township / Civil DivisionHELENA
Census Block Group2
Census Block2011
Census Tract800

Owner

Source: Lewis And Clark County records · APN R054394

Assessment roll updated September 15, 2025 · Last verified April 2026

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

Owner of Record2 Individual Names on File
Mailing Address643 DEARBORN AVE, HELENA, MT 59601-2766
OccupancyOwner Occupied
Owner TypeIndividual
VestingEt Al (and Others)

Deeds, Mortgages & Sale History

DateDocument
Jun 30, 2023Warranty Deed, Transfer · Conventional Mortgage
OPPORTUNITY BANK OF MT
Feb 03, 2021Warranty Deed, Transfer
FIRST MONTANA LAND TITLE COMPANY, FIRST MONTAANA LAND TITLE CO

Assessor's Deed Record

Deed Names2 Verified Names on Deed
Last SaleJun 30, 2023 · Amount on Record
Deed SaleJun 30, 2023 · Amount on Record
Prior SaleFeb 03, 2021
Deed Document Number20233412807
Deed Book / Page62 / 2898
Record UpdatedJun 08, 2026

June 2023: Warranty Deed, Transfer

Document TypeWarranty Deed
JurisdictionLEWIS AND CLARK MT
Recording DateJun 30, 2023
Property Address643 DEARBORN AVE, HELENA, MT 59601-2766
Document Number00M62/2898
Book / PageM62 / 2898
Instrument DateJun 30, 2023
Instrument3412807
Transaction TypeTransfer
Record UpdatedJul 26, 2023
Title CompanyNOT AVAILABLE, FLYINGS TITLE & ESCROW

Transaction

Tax$0.00
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipJoint Tenants
Address643 DEARBORN AVE, HELENA, MT 59601-2766

Mortgage

Document Number0003412808
DateJun 30, 2023
Instrument3412808
Lender
NameOPPORTUNITY BANK OF MT
TypeBank
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term361 Months
DueJul 01, 2053

February 2021: Warranty Deed, Transfer

Document TypeWarranty Deed
JurisdictionLEWIS AND CLARK MT
Recording DateFeb 03, 2021
Property Address643 DEARBORN AVE, HELENA, MT 59601-2766
Document NumberM58/6500
Book / PageM58 / 6500
Instrument DateFeb 03, 2021
Instrument3372239
Transaction TypeTransfer
Record UpdatedAug 12, 2021
Title CompanyFIRST MONTANA LAND TITLE COMPANY, FIRST MONTAANA LAND TITLE CO

Transaction

Tax$0.00
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name

Tax Assessment & Valuation

Source: Lewis And Clark County records · Assessment roll updated September 15, 2025 · Last verified April 2026

Property Jurisdictions

TypeName
StateMontana
CountyLewis And Clark County
MunicipalityHelena City
Elementary School DistrictHelena Elementary School District (PK - 08)
Secondary School DistrictHelena High School District (09 - 12)

Tax Bill & Assessment History

Assessed value is set for property tax purposes, not a market price estimate; it is a fraction of this property's market value.

YearTax BillAssessed ValueAssessed Market Value
2025$4,413.00 (-46.71%)$697,700 (+1.65%)$697,700 (+1.65%) Land $182,875 Building $514,825
2023$8,281.00$686,400 (+77%)$686,400 (+77%) Land $133,125 Building $553,275
2022$387,800
2021$387,800 Land $89,054 Building $298,746

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Lewis And Clark County (30049C), updated April 7, 2024 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026

Flood

FEMA Flood ZoneZone X
Flood HazardMinimal
500-Year FloodplainNo
Special Flood Hazard AreaNo

Wildfire

Wildfire RiskLow
above 20% of the US · above 6% of Montana
Wildfire LikelihoodAbout 1 in 7,143 per year
ExposureIndirect
within ember reach

Values are read at the parcel center point; lenders make the official flood determination.

Historic Designation

Source: NPS National Register of Historic Places · August 1, 2026 release · Last verified October 2026

Historic DistrictWithin the Helena Historic District
listed 1972 · 75 contributing resources · NRIS 72000737

Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.

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