97-103 HAYDEN AVE
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Location
97-103 HAYDEN AVE
Mblu
18/ / 2B/ /
Acct#
Owner
99 HAYDEN LLC
Total Market Value
$64,220,000
PID
1947
Building Count
4
Current Value
Assessment
Valuation YearImprovementsLandTotal
2026$52,500,000$11,720,000$64,220,000

Owner of Record
Owner99 HAYDEN LLC
Co-OwnerC/O HOBBS BROOK MANAGEMENT LLC
Address404 WYMAN ST SUITE 425
WALTHAM, MA 02451
Sale Price$112,500,000
Certificate
Book & Page 74091/0218
Sale Date02/05/2020
Instrument1C

Ownership History
Ownership History
OwnerSale PriceCertificateBook & PageInstrumentSale Date
99 HAYDEN LLC$112,500,000 74091/02181C02/05/2020
128 SPRING STREET LEXINGTON LLC$43,389,082 63237/01891B01/31/2014
128 SPRING STREET LEXINGTON LLC$10 63237/01861B01/31/2014
BEAL, ROBERT L TRUSTEE$10 63237/01811B01/31/2014
ONE LEDGEMONT LLC$10 47908/02301B08/01/2006

Building Information
Building 1 : Section 1
Year Built: 1968
Living Area: 133,024
Replacement Cost: $57,259,684
Building Percent Good: 76
Replacement Cost
Less Depreciation:
$43,517,000
Building Attributes
FieldDescription
Style:LAB/OFFICE
ModelCommercial
GradeB-
Stories:3
Occupancy1.00
Exterior Wall 1BRICK VENEER
Exterior Wall 2 
Roof StructureFLAT
Roof CoverT&G RESDEN
Interior Wall 1PLASTER
Interior Wall 2 
Interior Floor 1HARDWOOD
Interior Floor 2 
Heating FuelGAS
Heating TypeHOT WATER
AC TypeCENTRAL
Bldg UseOFFICE LAB MDL-94
Total Rooms 
Total Bedrms00
Total Baths0
1st Floor Use:4040
Heat/ACHEAT/AC SPLIT
Frame TypeREINF. CONCR
Baths/PlumbingAVERAGE
Ceiling/WallSUS-CEIL & WL
Rooms/PrtnsAVERAGE
Wall Height10.00
% Comn Wall0.00
Building Photo Building Photo
Building Layout Building Layout
Building Sub-Areas (sq ft)
CodeDescriptionGross
Area		Living
Area
FUSUpper Story, Finished 93,937 93,937
BASFirst Floor 39,087 39,087
CLPLoading Platform, Finished 984 0
FOPPorch, Open, Finished 1,678 0
   135,686 133,024
Building 2 : Section 1
Year Built: 1934
Living Area: 5,060
Replacement Cost: $2,374,516
Building Percent Good: 58
Replacement Cost
Less Depreciation:
$1,377,000
Building Attributes : Bldg 2 of 4
FieldDescription
Style:OFF/LAB
ModelCommercial
GradeB
Stories:2
Occupancy1.00
Exterior Wall 1BRICK/MSNRY
Exterior Wall 2 
Roof StructureFLAT
Roof CoverT&G RESDEN
Interior Wall 1PLASTER
Interior Wall 2 
Interior Floor 1HARDWOOD
Interior Floor 2 
Heating FuelOIL
Heating TypeHOT WATER
AC TypeCENTRAL
Bldg UseOFFICE LAB MDL-94
Total Rooms 
Total Bedrms00
Total Baths0
1st Floor Use:4040
Heat/ACHEAT/AC SPLIT
Frame TypeREINF. CONCR
Baths/PlumbingAVERAGE
Ceiling/WallSUS-CEIL & WL
Rooms/PrtnsAVERAGE
Wall Height10.00
% Comn Wall0.00
Building Photo Building Photo
Building Layout Building Layout
Building Sub-Areas (sq ft)
CodeDescriptionGross
Area		Living
Area
BASFirst Floor 2,530 2,530
FUSUpper Story, Finished 2,530 2,530
FBMBasement, Finished 2,490 0
   7,550 5,060
Building 3 : Section 1
Year Built: 1950
Living Area: 22,200
Replacement Cost: $5,096,498
Building Percent Good: 78
Replacement Cost
Less Depreciation:
$3,975,000
Building Attributes : Bldg 3 of 4
FieldDescription
Style:OFF/LAB
ModelCommercial
GradeC
Stories:3
Occupancy1.00
Exterior Wall 1AVERAGE
Exterior Wall 2 
Roof StructureFLAT
Roof CoverT&G RESDEN
Interior Wall 1PLASTER
Interior Wall 2 
Interior Floor 1HARDWOOD
Interior Floor 2 
Heating FuelOIL
Heating TypeHOT WATER
AC TypeCENTRAL
Bldg UseOFFICE LAB MDL-94
Total Rooms 
Total Bedrms00
Total Baths0
1st Floor Use:4040
Heat/ACHEAT/AC SPLIT
Frame TypeREINF. CONCR
Baths/PlumbingAVERAGE
Ceiling/WallSUS-CEIL & WL
Rooms/PrtnsAVERAGE
Wall Height10.00
% Comn Wall0.00
Building Photo Building Photo
Building Layout Building Layout
Building Sub-Areas (sq ft)
CodeDescriptionGross
Area		Living
Area
FUSUpper Story, Finished 14,800 14,800
BASFirst Floor 7,400 7,400
   22,200 22,200
Building 4 : Section 1
Year Built: 1960
Living Area: 12,540
Replacement Cost: $3,941,621
Building Percent Good: 78
Replacement Cost
Less Depreciation:
$3,074,000
Building Attributes : Bldg 4 of 4
FieldDescription
Style:OFF/LAB
ModelCommercial
GradeC
Stories:3
Occupancy1.00
Exterior Wall 1AVERAGE
Exterior Wall 2 
Roof StructureFLAT
Roof CoverT&G RESDEN
Interior Wall 1PLASTER
Interior Wall 2 
Interior Floor 1HARDWOOD
Interior Floor 2 
Heating FuelGAS
Heating TypeHOT WATER
AC TypeCENTRAL
Bldg UseOFFICE LAB MDL-94
Total Rooms 
Total Bedrms00
Total Baths0
1st Floor Use:4040
Heat/ACHEAT/AC SPLIT
Frame TypeREINF. CONCR
Baths/PlumbingAVERAGE
Ceiling/WallSUS-CEIL & WL
Rooms/PrtnsAVERAGE
Wall Height10.00
% Comn Wall0.00
Building Photo Building Photo
Building Layout Building Layout
Building Sub-Areas (sq ft)
CodeDescriptionGross
Area		Living
Area
BASFirst Floor 6,270 6,270
FUSUpper Story, Finished 6,270 6,270
FBMBasement, Finished 6,270 0
FOPPorch, Open, Finished 24 0
   18,834 12,540

Extra Features
Extra Features
CodeDescriptionSizeBldg #
ELVElevator2.00 Story2
ELVElevator3.00 Story1
ELVElevator3.00 Story3
ELVElevator3.00 Story4
SPR1SPRINKLERS-WET133024.00 S.F.1
SPR1SPRINKLERS-WET18810.00 S.F.4
SPR1SPRINKLERS-WET22200.00 S.F.3
SPR1SPRINKLERS-WET5060.00 S.F.2
LDL1LOAD LEVELERS3.00 UNITS1

Land
Land Use
Use Code4060
DescriptionLAB OFFICE  
ZonePD-6
NeighborhoodA
Alt Land ApprNo
Category
Land Line Valuation
Size (Sqr Feet)490050
Frontage
Depth0
Total Market Land$11,720,000

Outbuildings
Outbuildings
CodeDescriptionSub CodeSub DescriptionSizeBldg #
LT1LIGHTS-IN W/PL  60.00 UNITS1
PAV1PAVING-ASPHALT  32600.00 S.F.1
Valuation History
Assessment
Valuation YearImprovementsLandTotal
2026$52,500,000$11,720,000$64,220,000
2025$57,119,000$11,587,000$68,706,000
2024$55,912,000$11,035,000$66,947,000
2023$50,562,000$10,041,000$60,603,000

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