400 YORK ST
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Location
400 YORK ST
Mblu
259/ 0330/ 01000/ /
Acct#
259 0330 01000
Owner
YALE UNIVERSITY
Total Market Value
$32,470,410
Appraisal
$46,386,300
PID
14922
Building Count
3
Current Value
Appraisal
Valuation YearImprovementsLandTotal
2025$44,511,200$1,875,100$46,386,300
Assessment
Valuation YearImprovementsLandTotal
2025$31,157,840$1,312,570$32,470,410

Owner of Record
OwnerYALE UNIVERSITY
Co-Owner
AddressYALE U CONTROLLER FRA
PO BOX 208372
NEW HAVEN, CT 06520-8372
Sale Price$0
Certificate
Book & Page 5025/0324
Sale Date08/01/1996
Instrument1

Ownership History
Ownership History
OwnerSale PriceCertificateBook & PageInstrumentSale Date
YALE UNIVERSITY $0 5025/0324108/01/1996

Building Information
Building 1 : Section 1
Year Built: 1900
Living Area: 20,856
Replacement Cost: $4,937,700
Building Percent Good: 90
Replacement Cost
Less Depreciation:
$4,443,900
Building Attributes
FieldDescription
Style:Power Plant
ModelInd/Lg Com
GradeExcellent
Stories:1
Occupancy1.00
Exterior Wall 1Brick
Exterior Wall 2 
Roof StructureFlat
Roof CoverT&G/Rubber
Interior Wall 1Drywall/Plaste
Interior Wall 2Minim/Masonry
Interior Floor 1Concr-Finished
Interior Floor 2 
Heating FuelOil/Gas
Heating TypeFA/HW/ST
AC TypeNone
Bldg UsePVT UNIV MDL-96
Total Rooms 
Total Bedrms00
Total Baths0
NBHD Code 
1st Floor Use:9045
Heat/ACHEAT/AC PKGS
Frame TypeMASONRY
Baths/PlumbingAVERAGE
Ceiling/WallCEIL & WALLS
Rooms/PrtnsAVERAGE
Wall Height75.00
% Comn Wall 
Building Photo Building Photo
Building Layout Building Layout
Building Sub-Areas (sq ft)
CodeDescriptionGross
Area		Living
Area
BASFirst Floor 20,856 20,856
SLBSlab 20,856 0
   41,712 20,856
Building 2 : Section 1
Year Built: 1998
Living Area: 720
Replacement Cost: $86,144
Building Percent Good: 88
Replacement Cost
Less Depreciation:
$75,800
Building Attributes : Bldg 2 of 3
FieldDescription
Style:Industrial
ModelInd/Lg Com
GradeVery Good
Stories:1
Occupancy1.00
Exterior Wall 1Brick
Exterior Wall 2 
Roof StructureFlat
Roof CoverT&G/Rubber
Interior Wall 1Minim/Masonry
Interior Wall 2 
Interior Floor 1Concr Abv Grad
Interior Floor 2Concr-Finished
Heating FuelOil/Gas
Heating TypeHot Water
AC TypeNone
Bldg UsePVT UNIV MDL-96
Total Rooms 
Total Bedrms00
Total Baths0
NBHD Code 
1st Floor Use:9045
Heat/ACHEAT/AC PKGS
Frame TypeMASONRY
Baths/PlumbingAVERAGE
Ceiling/WallCEIL & MIN WL
Rooms/PrtnsAVERAGE
Wall Height10.00
% Comn Wall 
Building Photo Building Photo
Building Layout Building Layout
Building Sub-Areas (sq ft)
CodeDescriptionGross
Area		Living
Area
BASFirst Floor 720 720
SLBSlab 720 0
   1,440 720
Building 3 : Section 1
Year Built: 2012
Living Area: 12,738
Replacement Cost: $2,252,904
Building Percent Good: 98
Replacement Cost
Less Depreciation:
$2,207,800
Building Attributes : Bldg 3 of 3
FieldDescription
Style:Power Plant
ModelInd/Lg Com
GradeExcellent
Stories:4
Occupancy1.00
Exterior Wall 1Brick
Exterior Wall 2Glass/Thermo.
Roof StructureFlat
Roof CoverT&G/Rubber
Interior Wall 1Minim/Masonry
Interior Wall 2Drywall/Plaste
Interior Floor 1Concr-Finished
Interior Floor 2Fin WD/Carpet
Heating FuelGas/Oil
Heating TypeFA/HW/ST
AC TypeNone
Bldg UsePVT UNIV MDL-96
Total Rooms 
Total Bedrms 
Total Baths 
NBHD Code 
1st Floor Use: 
Heat/ACHEAT/AC PKGS
Frame TypeSTEEL
Baths/PlumbingAVERAGE
Ceiling/WallCEIL & WALLS
Rooms/PrtnsAVERAGE
Wall Height14.00
% Comn Wall 
Building Photo Building Photo
Building Layout Building Layout
Building Sub-Areas (sq ft)
CodeDescriptionGross
Area		Living
Area
FUSFinished Upper Story 9,608 9,128
BASFirst Floor 3,610 3,610
CANCanopy 40 0
UBMUnfinished Basement 3,610 0
   16,868 12,738

Extra Features
Extra Features
CodeDescriptionSizeValueAssessed ValueBldg #
SPR1SPRINKLERS-WET720.00 S.F.$1,600$1,1202
SPR1SPRINKLERS-WET16869.00 S.F.$43,000$30,1003
SPR1SPRINKLERS-WET20856.00 S.F.$48,800$34,1601

Land
Land Use
Use Code9045
DescriptionPVT UNIV MDL-96  
ZoneRH2
NeighborhoodDT
Alt Land ApprNo
Category
Land Line Valuation
Size (Acres)1.19
Frontage0
Depth0
Total Market Land$1,312,570
Appraised Value$1,875,100

Outbuildings
Outbuildings
CodeDescriptionSub CodeSub DescriptionSizeValueAssessed ValueBldg #
PAV1PAVING-ASPHALT  92300.00 S.F.$189,200$132,4401
FN1FENCE-4' CHAIN  272.00 L.F.$1,100$7701
MSC6BOILER PACKAGE  2.00 UNIT$18,750,000$13,125,0003
MSC12 TURBINES 7.5 TO 8 MW  2.00 UNIT$18,750,000$13,125,0001
Valuation History
Appraisal
Valuation YearImprovementsLandTotal
2025$44,511,200$1,875,100$46,386,300
2024$44,511,200$1,875,100$46,386,300
2023$44,511,200$1,875,100$46,386,300

Assessment
Valuation YearImprovementsLandTotal
2025$31,157,840$1,312,570$32,470,410
2024$31,157,840$1,312,570$32,470,410
2023$31,157,840$1,312,570$32,470,410

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