129 LIBRARY ST
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Location
129 LIBRARY ST
Mblu
31/ / 101/ /
Acct#
33335028
Owner
LIBRARY REALTY LLC 125
Total Market Value
$706,200
PID
563
Building Count
1
Current Value
Assessment
Valuation YearImprovementsLandTotal
2026$669,700$36,500$706,200

Owner of Record
OwnerLIBRARY REALTY LLC 125
Co-Owner
Address125 LIBRARY STREET
CHELSEA, MA 02150
Sale Price$4,000,000
Certificate
Book & Page 71346/250
Sale Date04/30/2025
Instrument1V

Ownership History
Ownership History
OwnerSale PriceCertificateBook & PageInstrumentSale Date
LIBRARY REALTY LLC 125$4,000,000 71346/2501V04/30/2025
BETANCOURT ANA M TRUSTEE$139,000 00645/00531V02/15/2013
SHAWMUT ADVERTISING INC$0  /0000 01/01/1900

Future Owners
Ownership History
OwnerSale PriceCertificateBook & PageInstrumentSale Date
LIBRARY REALTY LLC 125$4,000,000 71346/2501V04/30/2025

Building Information
Building 1 : Section 1
Year Built: 1970
Living Area: 5,046
Replacement Cost: $769,369
Building Percent Good: 79
Replacement Cost
Less Depreciation:
$607,800
Building Attributes
FieldDescription
Style:Office Bldg
ModelCommercial
GradeAverage +10
Stories:1 Story
Occupancy1.00
Exterior Wall 1Concr/Cinder
Exterior Wall 2 
Roof StructureFlat
Roof CoverTar & Gravel
Interior Wall 1Minim/Masonry
Interior Wall 2 
Interior Floor 1Concr-Finished
Interior Floor 2 
Heating FuelGas
Heating TypeForced Air-Duc
AC TypeCentral
Bldg UseOFFICE BLD MDL-94
Total Rooms2
Total Bedrms0
Total Baths2
Systems Stat 
Residential Units 
1st Floor Use:3400
Heat/ACHEAT/AC PKGS
Frame TypeMASONRY
Baths/PlumbingAVERAGE
Ceiling/WallNONE
Rooms/PrtnsAVERAGE
Wall Height16.00
% Comn Wall0.00
Commercial Units 
# Open parking spaces 
Building Photo Building Photo
Building Layout Building Layout
Building Sub-Areas (sq ft)
CodeDescriptionGross
Area		Living
Area
BASFirst Floor 5,046 5,046
   5,046 5,046

Extra Features
Extra Features
CodeDescriptionSizeAssessed ValueBldg #
SPR1SPRINKLERS-WET5046.00 S.F.$4,9001

Land
Land Use
Use Code3400
DescriptionOFFICE BLD MDL-94  
Zone
Neighborhood3030
Alt Land ApprNo
Category
Land Line Valuation
Size (Sqr Feet)3375
Frontage0
Total Market Land$36,500

Outbuildings
Outbuildings
CodeDescriptionSub CodeSub DescriptionSizeAssessed ValueBldg #
PAV1PAVING-ASPHALT  3000.00 S.F.$5,6001
Valuation History
Assessment
Valuation YearImprovementsLandTotal
2025$685,100$34,700$719,800
2024$623,700$33,400$657,100
2023$577,300$33,400$610,700

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