44 HARTWELL AVE
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Location
44 HARTWELL AVE
Mblu
79/ / 51/ /
Acct#
Owner
XENON PROPERTY LLC
Total Market Value
$10,121,000
PID
11227
Building Count
1
Current Value
Assessment
Valuation YearImprovementsLandTotal
2026$6,734,000$3,387,000$10,121,000

Owner of Record
OwnerXENON PROPERTY LLC
Co-Owner
AddressPO BOX 2090

WARREN, MI 48090
Sale Price$17,056,000
Certificate
Book & Page 80770/0331
Sale Date09/29/2022
Instrument1F

Ownership History
Ownership History
OwnerSale PriceCertificateBook & PageInstrumentSale Date
XENON PROPERTY LLC$17,056,000 80770/03311F09/29/2022
XENON PROPERTY LLC$18,096,000 80276/00901N06/14/2022
ALEXANDRIA REAL ESTATE EQUITIES INC$9,400,000 45032/04601Q04/21/2005
NEXUS CAMBRIDGE LEXINGTON LLC$2,850,000 30478/05281O07/29/1999
PIONEER-STANDARD ELECTRONICS$1,500,000 14816/0489 12/01/1982

Building Information
Building 1 : Section 1
Year Built: 1970
Living Area: 26,533
Replacement Cost: $10,130,140
Building Percent Good: 66
Replacement Cost
Less Depreciation:
$6,686,000
Building Attributes
FieldDescription
Style:LAB/OFFICE
ModelIndustrial
GradeC
Stories:1
Occupancy2.00
Exterior Wall 1BRICK/MSNRY
Exterior Wall 2 
Roof StructureFLAT
Roof CoverT&G RESDEN
Interior Wall 1DRYWALL/SHTRK
Interior Wall 2 
Interior Floor 1WW/CARPET
Interior Floor 2VINYL/ASPHALT
Heating FuelGAS
Heating TypeFORCED AIR DUC
AC TypeCENTRAL
Bldg UseLAB OFFICE
Total Rooms 
Total Bedrms00
Total Baths0
1st Floor Use:4040
Heat/ACHEAT/AC SPLIT
Frame TypeMASONRY
Baths/PlumbingAVERAGE
Ceiling/WallSUS-CEIL & WL
Rooms/PrtnsAVERAGE
Wall Height14.00
% Comn Wall0.00
Building Photo Building Photo
Building Layout Building Layout
Building Sub-Areas (sq ft)
CodeDescriptionGross
Area		Living
Area
BASFirst Floor 26,533 26,533
   26,533 26,533

Extra Features
Extra Features
CodeDescriptionSizeBldg #
SPR1SPRINKLERS-WET26533.00 S.F.1

Land
Land Use
Use Code4060
DescriptionLAB OFFICE  
ZoneCM
NeighborhoodB
Alt Land ApprNo
Category
Land Line Valuation
Size (Sqr Feet)209088
Frontage
Depth0
Total Market Land$3,387,000

Outbuildings
Outbuildings
CodeDescriptionSub CodeSub DescriptionSizeBldg #
PAV1PAVING-ASPHALT  21000.00 S.F.1
SGN2DOUBLE SIDED  25.00 S.F.&HGT1
Valuation History
Assessment
Valuation YearImprovementsLandTotal
2026$6,734,000$3,387,000$10,121,000
2025$7,331,000$3,370,000$10,701,000
2024$7,622,000$3,209,000$10,831,000
2023$6,862,000$2,923,000$9,785,000

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