35 HARTWELL AVE
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Location
35 HARTWELL AVE
Mblu
85/ / 21/ /
Acct#
Owner
XENON PROPERTY LLC
Total Market Value
$20,678,000
PID
11795
Building Count
1
Current Value
Assessment
Valuation YearImprovementsLandTotal
2026$17,348,000$3,330,000$20,678,000

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

WARREN, MI 48090
Sale Price$45,205,000
Certificate
Book & Page 80276/0269
Sale Date06/14/2022
Instrument1N

Ownership History
Ownership History
OwnerSale PriceCertificateBook & PageInstrumentSale Date
XENON PROPERTY LLC$45,205,000 80276/02691N06/14/2022
ALEXANDRIA REAL ESTATE EQUITIES INC$100 46653/00241A12/13/2005
ARE-35 HARTWELL AVENUE LLC$6,900,000 01263/00581A01/15/2003
ARE-35 HARTWELL AVENUE LLC$6,900,000 37665/06061O01/14/2003
THE LEX BLDG LTD PARTNERSHIP$3,154,832 00964/0017 01/01/1983

Building Information
Building 1 : Section 1
Year Built: 1972
Living Area: 46,784
Replacement Cost: $21,469,406
Building Percent Good: 80
Replacement Cost
Less Depreciation:
$17,176,000
Building Attributes
FieldDescription
Style:LAB/OFFICE
ModelIndustrial
GradeC+
Stories:2
Occupancy1.00
Exterior Wall 1BRICK/MSNRY
Exterior Wall 2 
Roof StructureFLAT
Roof CoverT&G COMM
Interior Wall 1DRYWALL/SHTRK
Interior Wall 2 
Interior Floor 1VINYL/ASPHALT
Interior Floor 2 
Heating FuelGAS
Heating TypeFORCED AIR DUC
AC TypeCENTRAL
Bldg UseLAB OFFICE
Total Rooms 
Total Bedrms00
Total Baths0
1st Floor Use:345I
Heat/ACHEAT/AC SPLIT
Frame TypeMASONRY
Baths/PlumbingAVERAGE
Ceiling/WallSUS-CEIL & WL
Rooms/PrtnsAVERAGE
Wall Height25.00
% Comn Wall0.00
Building Photo Building Photo
Building Layout Building Layout
Building Sub-Areas (sq ft)
CodeDescriptionGross
Area		Living
Area
BASFirst Floor 37,496 37,496
FUSUpper Story, Finished 9,288 9,288
CLPLoading Platform, Finished 341 0
FOPPorch, Open, Finished 1,152 0
   48,277 46,784

Extra Features
Extra Features
CodeDescriptionSizeBldg #
ELVElevator2.00 Story1
SPR1SPRINKLERS-WET46784.00 S.F.1
LDL2W/MAN FLIP OUT1.00 UNITS1

Land
Land Use
Use Code4060
DescriptionLAB OFFICE  
ZoneCM
NeighborhoodB
Alt Land ApprNo
Category
Land Line Valuation
Size (Sqr Feet)130680
Frontage
Depth0
Total Market Land$3,330,000

Outbuildings
Outbuildings
CodeDescriptionSub CodeSub DescriptionSizeBldg #
PAV1PAVING-ASPHALT  40000.00 S.F.1
PAV2PAVING-CONC  2226.00 S.F.1
LT10W/DOUBLE LIGHT  4.00 UNITS1
Valuation History
Assessment
Valuation YearImprovementsLandTotal
2026$17,348,000$3,330,000$20,678,000
2025$18,881,000$3,311,000$22,192,000
2024$18,503,000$3,153,000$21,656,000
2023$16,662,000$2,867,000$19,529,000

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