<Tr> <Th> Volume </Th> <Td> largest building in the world by volume at 13,385,378 m3 </Td> </Tr> <Tr> <Th> Owner (s) </Th> <Td> Boeing </Td> </Tr> <P> The Boeing Everett Factory, in Everett, Washington, is an airplane assembly building owned by Boeing . Located on the northeast corner of Paine Field, it is the largest building in the world by volume at 13,385,378 m (472,370,319 cu ft) and covers 399,480 m (98.7 acres). This is the factory where the wide - body Boeing 747, 767, 777, and 787 are assembled . </P> <P> Plans for the factory were first announced in 1966 for it to be the site of the construction of the 747 after Boeing was awarded a US $525 million contract from Pan American World Airways to build 25 747s . It purchased 780 acres north of the then little - used Paine Field, which was operated by the US Army in World War II . Boeing has had an Everett presence since 1943 . </P>

How big is the boeing plant in everett