company #247334766

Joseph J. Duffy Company

active general contractor founded 1923

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Activity Rankings

#20 in Rockford 1 building
#2076 in United States 16 buildings
#2211 in North America 16 buildings
#3357 Worldwide 16 buildings

Object dataJoin to edit

Status	active
Role	general contractor
Founded	1923
City	Chicago, IL
Country	United States

Source: SKYDB | As of: 2026-10-30

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Statistics

Buildings by decade

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3 25% 2020s 7 58.3% 2010s 1 8.3% 2000s 0 0% 1990s 0 0% 1980s 1 8.3% 1970s 0 0% 1960s 0 0% 1950s 0 0% 1940s 0 0% 1930s 0 0% 1920s 0 0% 1910s 0 0% 1900s 4 not counted No Year

By status

Completed 16

By primary use

residential 16

social 1

By floor count

1-9 floors 15

10-19 floors 1

By height

50-99 m 1