400 PROSPECT ST
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Location
400 PROSPECT ST
Mblu
247/ 0394/ 00400/ /
Acct#
247 0394 00400
Owner
YALE UNIVERSITY
Total Market Value
$500,010
Appraisal
$714,300
PID
14032
Building Count
1
Current Value
Appraisal
Valuation YearImprovementsLandTotal
2025$482,700$231,600$714,300
Assessment
Valuation YearImprovementsLandTotal
2025$337,890$162,120$500,010

Owner of Record
OwnerYALE UNIVERSITY
Co-Owner
Address433 TEMPLE ST

NEW HAVEN, CT 06511
Sale Price$2,850,000
Certificate
Book & Page 10568/316
Sale Date08/04/2023
Instrument00

Ownership History
Ownership History
OwnerSale PriceCertificateBook & PageInstrumentSale Date
YALE UNIVERSITY$2,850,000 10568/3160008/04/2023
GABLE LLC $235,000 5493/00740005/07/1999
UNKNOWN$0 2872/0193 10/02/1980

Building Information
Building 1 : Section 1
Year Built: 1900
Living Area: 6,927
Replacement Cost: $936,679
Building Percent Good: 50
Replacement Cost
Less Depreciation:
$468,300
Building Attributes
FieldDescription
Style:Off Conv Res
ModelCommercial
GradeAve/Good
Stories:2.5
Occupancy1.00
Exterior Wall 1Brick
Exterior Wall 2 
Roof StructureGable/Hip
Roof CoverSlate
Interior Wall 1Drywall/Plaste
Interior Wall 2 
Interior Floor 1Fin WD/Carpet
Interior Floor 2 
Heating FuelGas/Oil
Heating TypeFA/HW/ST
AC TypeNone
Bldg UseOFFICE BLD MDL-94
Total Rooms 
Total Bedrms00
Total Baths0
NBHD Code 
1st Floor Use:3400
Heat/ACNONE
Frame TypeMASONRY
Baths/PlumbingAVERAGE
Ceiling/WallCEIL & WALLS
Rooms/PrtnsAVERAGE
Wall Height9.00
% Comn Wall 
Building Photo Building Photo
Building Layout Building Layout
Building Sub-Areas (sq ft)
CodeDescriptionGross
Area		Living
Area
BASFirst Floor 2,527 2,527
FUSFinished Upper Story 2,286 2,172
FHSFinished Half Story 2,286 1,486
FLLFinished Lower Level 927 742
FOPOpen Porch 224 0
UBMUnfinished Basement 1,359 0
   9,609 6,927

Extra Features
Extra Features

No Data for Extra Features


Land
Land Use
Use Code3400
DescriptionOFFICE BLD MDL-94  
ZoneRM2
Neighborhood1500
Alt Land ApprNo
Category
Land Line Valuation
Size (Acres)0.55
Frontage0
Depth0
Total Market Land$162,120
Appraised Value$231,600

Outbuildings
Outbuildings
CodeDescriptionSub CodeSub DescriptionSizeValueAssessed ValueBldg #
PAV1PAVING-ASPHALT  7000.00 S.F.$14,400$10,0801
Valuation History
Appraisal
Valuation YearImprovementsLandTotal
2025$482,700$231,600$714,300
2024$482,700$231,600$714,300
2023$482,700$231,600$714,300

Assessment
Valuation YearImprovementsLandTotal
2025$337,890$162,120$500,010
2024$337,890$162,120$500,010
2023$337,890$162,120$500,010

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