be checked for its neutrality . discussion of this nomination can be found on the talk page . may 2016 learn how and when to remove this template message the rockefeller group is an american private company based in new york city primarily involved in real estate operations in the united states . it is a subsidiary of mitsubishi estate co. the company began with the development of rockefeller center . after building the original 6 000 000 square foot 560 000 m2 art deco complex from 1931 into the 1940s the company name was then the metropolitan square corporation employing nearly 75 000 workers the real estate company developed several towers in the immediate vicinity from the late 1940s into the 1950s and 1960s . it entered into a partnership with time inc. and constructed a 48 story building for the company that opened in 1959 ; this spearheaded the expansion of the center to the west of 6th avenue avenue of the americas . by the early 1970s it had added a total of four international style towers to rockefeller center more than doubling the size of the original complex . today the rockefeller group maintains an ownership management position in the 7 700 000 square feet 720 000 m2 of premier office space that makes up rockefeller center s western corridor the newer buildings located west of sixth avenue . the eastern and original part of the center is now owned by tishman speyer who also serves as manager and the lester crown family of chicago illinois . contents 1 buildings 2 subsidiary 3 references 4 external links buildings edit constructed the 43 story sperry rand building at 1290 avenue of the americas in participation with the uris building corporation 1962 . purchased the 28 story manufacturers hanover trust company building at 600 fifth avenue 1963 . participated with the hilton hotels corporation to build the new york hilton on the avenue of the americas 1963 . constructed the 1 000 000 square foot 93 000 m2 headquarters building for public service electric & gas in newark new jersey 1970s . co developed in a joint venture with continental insurance company the continental center in manhattan which serves as that company s headquarters 1980s . subsidiary edit rockefeller group business centers . offers full service office space in new york . rockefeller group technology solutions references edit external links edit company website this article about a financial services corporation of the united states is a stub . you can help wikipedia by expanding it . v t e this article about a building or structure in manhattan is a stub . you can help wikipedia by expanding it . v t e retrieved from https en.wikipedia.org w index.php title rockefeller group & oldid 736002116 categories rockefeller centerrockefeller familyjoint venturesbuildings and structures in manhattanunited states financial services company stubsmanhattan building and structure stubshidden categories articles needing pov check from may 2016all stub articles navigation menu personal tools not logged intalkcontributionscreate accountlog in namespaces article talk variants views read edit view history more search navigation main pagecontentsfeatured contentcurrent eventsrandom articledonate to wikipediawikipedia store interaction helpabout wikipediacommunity portalrecent changescontact page tools what links hererelated changesupload filespecial pagespermanent linkpage informationwikidata itemcite this page print export create a bookdownload as pdfprintable version languages espa olfran ais edit links this page was last modified on 24 august 2016 at 14 01 . text is available under the creative commons attribution sharealike license ; additional terms may apply . by using this site you agree to the terms of use and privacy policy . wikipedia is a registered trademark of the wikimedia foundation inc. a non profit organization . privacy policy about wikipedia disclaimers contact wikipedia developers cookie statement mobile view