private industry real estate development founded washington d.c. u.s. 1971 headquarters washington d.c. u.s. area served mid atlantic u.s. key people robert gladstone chairman christopher gladstone president products hotels resorts residences revenue 81 million 2011 est. 1 number of employees 180 1 website quadrangledevcorp.com quadrangle development corporation is a privately held vertically integrated real estate development company based in washington d.c. in the united states . by 2002 it was one of the largest real estate developers in the washington d.c. metropolitan area . 2 as of april 2011 the company owned 83 properties consisting of apartment buildings condominiums hotels and office buildings totaling 22 000 000 square feet 2 000 000 m2 and worth 8.4 billion . 3 contents 1 corporate history and projects 2 key executives 3 references 4 external links corporate history and projects edit quadrangle development corporation was founded in 1971 by robert gladstone and james r. crozier . the company originally focused on constructing apartment complexes but after a few years began erecting office buildings and hotels . 2 among the many projects which quadrangle development corporation has been involved in are the jw marriott hotel washington in 1979 . 4 the shops at national place and the national theatre which were part of the redevelopment of pennsylvania avenue nw in the late 1970s and the early 1980s . 5 the grand hyatt washington in 1987 . 6 the washington center office office building at 1001 g street nw in 1989 . 7 hyatt regency chesapeake bay golf resort spa & marina near annapolis maryland in 2001 . this site includes the river marsh golf course . 7 medimmune inc. headquarters in gaithersburg maryland in 2003 . 7 the hilton baltimore in 2008 . 8 towers crescent mixed use development at tysons corner virginia in 2009 . 9 mount vernon place a mixed use development at mount vernon triangle in washington d.c. under construction as of october 2012 . 10 washington marriott marquis an 1 100 room headquarters hotel next to the walter e. washington convention center in washington d.c. opened may 1 2014 . 11 key executives edit key executives of quadrangle development corporation as of 2011 were robert gladstone chairman of the board of directors and chief executive officer christopher gladstone president robert gladstone died at his home in washington d.c. on december 24 2014 . 12 references edit a b quadrangle development corporation . insideview.com . 2013 . accessed 2013 01 07 . a b washington real estate developer james crozier . washington post . july 20 2002 . quadrangle s national place office building achieves usgbc s leed gold certification for existing buildings . press release . u.s. green building council . april 25 2011 . brown merrill . marriott celebrates hotel expansion . washington post . september 29 1979 . knight jerry . 2 firms win project on the avenue . washington post . october 26 1978 ; lardner james . the national theatre s new horizons . washington post . september 23 1979 ; padc s biggest project starts at 14th and pa . washington post . may 22 1981 ; swallow wendy . major share of national place sold . washington post . september 1 1984 . walsh sharon warren . the hyatt gets ready . washington post . june 8 1987 . a b c hedgpeth dana . bob gladstone weighs in on baseball redevelopment . washington post . november 29 2004 . accessed 2013 01 07 . reed keith t. developers preview baltimore convention hq hotel . washington business journal . november 13 2002 . accessed 2013 01 07 . coombs joe . towers crescent starts to grow . washington business journal . november 29 2007 . accessed 2013 01 07 . wilgoren debbi . barren tract in district set for redevelopment . washington post . march 28 2004 ; hedgpeth dana . mt. vernon triangle edges upward . washington post . april 3 2006 ; quadrangle s mount vernon place gets permit for mixed use . washington business journal . october 29 2012 accessed 2013 01 07 . craig tim . plan limits public funding of convention center hotel . washington post . june 19 2009 ; rein lisa . d.c. council s ok may finally launch long delayed convention center hotel . washington post . august 2 2009 ; rein lisa . convention center still waits for hotel . washington post . january 18 2010 ; o connell jonathan . deal reached on convention center hotel . washington post . july 7 2010 ; kravitz derek . convention center hotel begins to see light of day . washington post . november 11 2010 ; o connell jonathan . d.c. is asked to help finance two hotels . washington post . september 19 2011 . nycz conner jennifer january 5 2015 . quadrangle development corp. founder robert gladstone dies . washington business journal . retrieved january 5 2015 ; robert gladstone . the washington post . january 1 2015 . external links edit quadrangle development corporation official web site retrieved from https en.wikipedia.org w index.php title quadrangle development corporation & oldid 647151887 categories privately held companies based in washington d.c. 1971 establishments in washington d.c.companies established in 1971real estate investment trustscommercial real estateprivate equity portfolio companies 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 add links this page was last modified on 14 february 2015 at 21 00 . text is available under the creative commons attribution sharealike license ; 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