339 PROSPECT ST
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Location
339 PROSPECT ST
Mblu
247/ 0395/ 00100/ /
Acct#
247 0395 00100
Owner
YALE UNIVERSITY
Total Market Value
$20,076,140
Appraisal
$28,680,200
PID
14038
Building Count
3
Current Value
Appraisal
Valuation YearImprovementsLandTotal
2025$25,072,000$3,608,200$28,680,200
Assessment
Valuation YearImprovementsLandTotal
2025$17,550,400$2,525,740$20,076,140

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 2440/0195
Sale Date09/29/1972
Instrument

Ownership History
Ownership History
OwnerSale PriceCertificateBook & PageInstrumentSale Date
YALE UNIVERSITY$0 2440/0195 09/29/1972

Building Information
Building 1 : Section 1
Year Built: 1900
Living Area: 21,608
Replacement Cost: $15,123,733
Building Percent Good: 73
Replacement Cost
Less Depreciation:
$11,040,300
Building Attributes
FieldDescription
Style:Classroom
ModelCommercial
GradeVg/Exc
Stories:2.5
Occupancy1.00
Exterior Wall 1Stucco
Exterior Wall 2Brick
Roof StructureGable/Hip
Roof CoverSlate
Interior Wall 1Drywall/Plaste
Interior Wall 2 
Interior Floor 1Fin WD/Carpet
Interior Floor 2Carpet
Heating FuelOil/Gas
Heating TypeHot Water
AC TypeCentral
Bldg UsePVT UNIV MDL-94
Total Rooms 
Total Bedrms00
Total Baths0
NBHD Code 
1st Floor Use:904C
Heat/ACHEAT/AC PKGS
Frame TypeMASONRY
Baths/PlumbingABOVE AVERAGE
Ceiling/WallCEIL & WALLS
Rooms/PrtnsABOVE AVERAGE
Wall Height10.00
% Comn Wall 
Building Photo Building Photo
Building Layout Building Layout
Building Sub-Areas (sq ft)
CodeDescriptionGross
Area		Living
Area
BASFirst Floor 6,450 6,450
FUSFinished Upper Story 6,450 6,128
TQSThree Quarter Story 6,450 5,160
FLLFinished Lower Level 4,838 3,870
FOPOpen Porch 348 0
ULLUnfin Lower Level 1,612 0
   26,148 21,608
Building 2 : Section 1
Year Built: 1990
Living Area: 4,816
Replacement Cost: $3,052,135
Building Percent Good: 85
Replacement Cost
Less Depreciation:
$2,594,300
Building Attributes : Bldg 2 of 3
FieldDescription
Style:Laboratory
ModelCommercial
GradeVery Good
Stories:1
Occupancy1.00
Exterior Wall 1Concr/Cinder
Exterior Wall 2 
Roof StructureFlat
Roof CoverT&G/Rubber
Interior Wall 1Minim/Masonry
Interior Wall 2 
Interior Floor 1Carpet
Interior Floor 2 
Heating FuelGas/Oil
Heating TypeFA/HW/ST
AC TypeCentral
Bldg UsePVT UNIV MDL-95
Total Rooms 
Total Bedrms00
Total Baths0
NBHD CodePROSPECT HILL
1st Floor Use:904S
Heat/ACHEAT/AC PKGS
Frame TypeMASONRY
Baths/PlumbingABOVE AVERAGE
Ceiling/WallCEIL & MIN WL
Rooms/PrtnsAVERAGE
Wall Height12.00
% Comn Wall 
Building Photo Building Photo
Building Layout Building Layout
Building Sub-Areas (sq ft)
CodeDescriptionGross
Area		Living
Area
BASFirst Floor 4,816 4,816
CANCanopy 192 0
FOPOpen Porch 560 0
PTOPatio 1,008 0
SLBSlab 4,816 0
   11,392 4,816
Building 3 : Section 1
Year Built: 2009
Living Area: 12,357
Replacement Cost: $12,067,241
Building Percent Good: 93
Replacement Cost
Less Depreciation:
$11,222,500
Building Attributes : Bldg 3 of 3
FieldDescription
Style:Classroom
ModelInd/Lg Com
GradeExcellent +
Stories:1
Occupancy1.00
Exterior Wall 1Stone
Exterior Wall 2 
Roof StructureGable/Hip
Roof CoverEnam Mtl Shing
Interior Wall 1Drywall/Plaste
Interior Wall 2 
Interior Floor 1Slate
Interior Floor 2Ceram Clay Til
Heating FuelGas/Oil
Heating TypeGeo-Thermal
AC TypeCentral
Bldg UsePVT SCHOOL MDL-94
Total Rooms 
Total Bedrms 
Total Baths 
NBHD Code 
1st Floor Use: 
Heat/ACHEAT/AC PKGS
Frame TypeFIREPRF STEEL
Baths/PlumbingABOVE AVERAGE
Ceiling/WallCEIL & WALLS
Rooms/PrtnsABOVE AVERAGE
Wall Height22.00
% Comn Wall0.00
Building Photo Building Photo
Building Layout Building Layout
Building Sub-Areas (sq ft)
CodeDescriptionGross
Area		Living
Area
BASFirst Floor 6,682 6,682
FLLFinished Lower Level 6,676 5,675
FOPOpen Porch 1,312 0
   14,670 12,357

Extra Features
Extra Features
CodeDescriptionSizeValueAssessed ValueBldg #
ELV2PASS ELEV2.00 STOPS$57,700$40,3903
FPL3FIREPLACE3.00 UNITS$0$01
FPOEXTRA FPL OPEN2.00 UNITS$0$01
SPR2WET/CONCEALED11864.00 S.F.$34,200$23,9403
ELV2PASS ELEV6.00 STOPS$0$01

Land
Land Use
Use Code904C
DescriptionPVT UNIV MDL-94  
ZoneRM2
Neighborhood1500
Alt Land ApprNo
Category
Land Line Valuation
Size (Acres)7.17
Frontage0
Depth0
Total Market Land$2,525,740
Appraised Value$3,608,200

Outbuildings
Outbuildings
CodeDescriptionSub CodeSub DescriptionSizeValueAssessed ValueBldg #
PAV1PAVING-ASPHALT  60000.00 S.F.$123,000$86,1001
Valuation History
Appraisal
Valuation YearImprovementsLandTotal
2025$25,072,000$3,608,200$28,680,200
2024$25,072,000$3,608,200$28,680,200
2023$25,072,000$3,608,200$28,680,200

Assessment
Valuation YearImprovementsLandTotal
2025$17,550,400$2,525,740$20,076,140
2024$17,550,400$2,525,740$20,076,140
2023$17,550,400$2,525,740$20,076,140

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