580 RIVERSIDE AVE
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Location
580 RIVERSIDE AVE
Mblu
B06/ / 088/000 /
Acct#
11176
Owner
HAMILTON DEVELOPMENT LLC
Assessed Value
$8,653,600
Appraisal
$12,362,300
PID
7058
Building Count
5
Current Value
Appraisal
Valuation YearImprovementsLandTotal
2025$10,171,400$2,190,900$12,362,300
Assessment
Valuation YearImprovementsLandTotal
2025$7,120,000$1,533,600$8,653,600

Owner of Record
OwnerHAMILTON DEVELOPMENT LLC
Co-Owner
AddressP O BOX 2030
WESTPORT, CT 06880
Sale Price$0
Book & Page 3195/0023
Sale Date05/19/2011
Instrument29

Ownership History
Ownership History
OwnerSale PriceBook & PageInstrumentSale Date
HAMILTON DEVELOPMENT LLC$03195/00232905/19/2011
HAMILTON DEVELOPMENT LLC$03081/00012905/06/2010
HAMILTON DEVELOPMENT LLC$02804/01122905/30/2007
580 RIVERSIDE ASSOCIATES LLC$940,0001627/02250009/01/1998

Building Information
Building 1 : Section 1
Year Built: 2013
Living Area: 4,422
Building Attributes
FieldDescription
Style:Stores/Apt
ModelCommercial
GradeGood +20
Stories:2
Occupancy4.00
Exterior Wall 1Stone/Masonry
Exterior Wall 2Clapboard
Roof StructureGable
Roof CoverAsphalt/F Glas
Interior Wall 1Drywall
Interior Wall 2 
Interior Floor 1Ceram Clay Til
Interior Floor 2Hardwood
Heating FuelGas
Heating TypeForced Air
AC TypeCentral
Bldg UseRetail/Res
Income Adj 
1st Floor Use: 
Heat/ACHeat/AC Pkgs
Frame TypeWood Frame
Baths/PlumbingAverage
Ceiling/WallsCeil & Walls
Rooms/PrtnsAverage
Wall Height8.00
% Comn Wall 
Building Photo Building Photo
Building Layout Building Layout
Building Sub-Areas (sq ft)
CodeDescriptionGross
Area		Living
Area
BASFirst Floor 2,211 2,211
FUSUpper Story, Finished 2,211 2,211
BLCBalcony 24 0
CANCanopy 36 0
SLBSlab 2,211 0
UATAttic, Unfinished 2,211 0
   8,904 4,422
Building 2 : Section 1
Year Built: 2013
Living Area: 4,444
Building Attributes : Bldg 2 of 5
FieldDescription
Style:Stores/Apt
ModelCommercial
GradeGood +20
Stories:2
Occupancy3.00
Exterior Wall 1Stone/Masonry
Exterior Wall 2Clapboard
Roof StructureGable
Roof CoverAsphalt/F Glas
Interior Wall 1Drywall
Interior Wall 2 
Interior Floor 1Ceram Clay Til
Interior Floor 2Hardwood
Heating FuelGas
Heating TypeForced Air
AC TypeCentral
Bldg UseApartments
Income Adj 
1st Floor Use: 
Heat/ACHeat/AC Pkgs
Frame TypeWood Frame
Baths/PlumbingAverage
Ceiling/WallsCeil & Walls
Rooms/PrtnsAverage
Wall Height8.00
% Comn Wall 
Building Photo Building Photo
Building Layout Building Layout
Building Sub-Areas (sq ft)
CodeDescriptionGross
Area		Living
Area
BASFirst Floor 2,222 2,222
FUSUpper Story, Finished 2,222 2,222
BLCBalcony 12 0
CANCanopy 30 0
SLBSlab 2,222 0
UATAttic, Unfinished 2,222 0
   8,930 4,444
Building 3 : Section 1
Year Built: 2013
Living Area: 9,850
Building Attributes : Bldg 3 of 5
FieldDescription
Style:Apt House
ModelCommercial
GradeGood +20
Stories:2.5
Occupancy5.00
Exterior Wall 1Clapboard
Exterior Wall 2 
Roof StructureGable
Roof CoverAsphalt/F Glas
Interior Wall 1Drywall
Interior Wall 2 
Interior Floor 1Hardwood
Interior Floor 2 
Heating FuelGas
Heating TypeForced Air
AC TypeCentral
Bldg UseApartments
Income Adj 
1st Floor Use: 
Heat/ACHeat/AC Pkgs
Frame TypeWood Frame
Baths/PlumbingAverage
Ceiling/WallsCeil & Walls
Rooms/PrtnsAverage
Wall Height8.00
% Comn Wall 
Building Photo Building Photo
Building Layout Building Layout
Building Sub-Areas (sq ft)
CodeDescriptionGross
Area		Living
Area
BASFirst Floor 3,940 3,940
FUSUpper Story, Finished 3,940 3,940
FHSHalf Story, Finished 3,940 1,970
CRLCrawl Space 3,940 0
FOPPorch, Open 600 0
PTSPatio - Stone 300 0
   16,660 9,850
Building 4 : Section 1
Year Built: 2013
Living Area: 9,631
Building Attributes : Bldg 4 of 5
FieldDescription
Style:Apt House
ModelCommercial
GradeGood +20
Stories:3
Occupancy7.00
Exterior Wall 1Clapboard
Exterior Wall 2 
Roof StructureGable
Roof CoverAsphalt/F Glas
Interior Wall 1Drywall
Interior Wall 2 
Interior Floor 1Hardwood
Interior Floor 2 
Heating FuelGas
Heating TypeForced Air
AC TypeCentral
Bldg UseApartments
Income Adj 
1st Floor Use: 
Heat/ACHeat/AC Pkgs
Frame TypeWood Frame
Baths/PlumbingAverage
Ceiling/WallsCeil & Walls
Rooms/PrtnsAverage
Wall Height8.00
% Comn Wall 
Building Photo Building Photo
Building Layout Building Layout
Building Sub-Areas (sq ft)
CodeDescriptionGross
Area		Living
Area
FUSUpper Story, Finished 5,236 5,236
BASFirst Floor 4,395 4,395
BSMBasement Area 600 0
CANCanopy 36 0
CPTCovered Parking 10,901 0
CTHCathedral Ceiling 931 0
CTYCourt Yard 8,078 0
FOPPorch, Open 342 0
PTSPatio - Stone 613 0
SLBSlab 1,938 0
VLTVaulted Ceiling 490 0
   33,560 9,631
Building 5 : Section 1
Year Built: 2013
Living Area: 9,850
Building Attributes : Bldg 5 of 5
FieldDescription
Style:Apt House
ModelCommercial
GradeGood +20
Stories:2.5
Occupancy5.00
Exterior Wall 1Clapboard
Exterior Wall 2 
Roof StructureGable
Roof CoverAsphalt/F Glas
Interior Wall 1Drywall
Interior Wall 2 
Interior Floor 1Hardwood
Interior Floor 2 
Heating FuelGas
Heating TypeForced Air
AC TypeCentral
Bldg UseApartments
Income Adj 
1st Floor Use: 
Heat/ACHeat/AC Pkgs
Frame TypeWood Frame
Baths/PlumbingAverage
Ceiling/WallsCeil & 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 3,940 3,940
FUSUpper Story, Finished 3,940 3,940
FHSHalf Story, Finished 3,940 1,970
FOPPorch, Open 600 0
PTSPatio - Stone 300 0
SLBSlab 3,940 0
   16,660 9,850

Extra Features
Extra Features
CodeDescriptionSizeValueAssessed ValueBldg #
SPRSprinklers13790.00 S.F.$30,300$21,2003
SPRSprinklers2222.00 S.F.$4,900$3,4002
SPRSprinklers9631.00 S.F.$21,200$14,8004
SPRSprinklers9850.00 S.F.$21,700$15,2005
SPRSprinklers11450.00 S.F.$30,200$21,1004
SPRSprinklers2211.00 S.F.$4,900$3,4001

Land
Land Use
Use Code304
DescriptionRetail/Res  
ZoneGBD/S
Land Line Valuation
Size (Acres)1.61
Assessed Value$1,533,600
Appraised Value$2,190,900

Outbuildings
Outbuildings
CodeDescriptionSizeValueAssessed ValueBldg #
PAV1Paving Asph.3000.00 S.F.$5,600$3,9001
Valuation History
Appraisal
Valuation YearImprovementsLandTotal
2025$10,171,400$2,190,900$12,362,300
2024$8,968,000$2,086,600$11,054,600
2023$8,968,000$2,086,600$11,054,600

Assessment
Valuation YearImprovementsLandTotal
2025$7,120,000$1,533,600$8,653,600
2024$6,277,600$1,460,600$7,738,200
2023$6,277,600$1,460,600$7,738,200

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