citations for verification . please help improve this article by adding citations to reliable sources . unsourced material may be challenged and removed . september 2014 learn how and when to remove this template message liberty property trust type public nyse lpt industry real estate development property management founded 1972 in philadelphia pennsylvania united states headquarters malvern pennsylvania usa key people william p. hankowsky chairman president & chief executive officer products comcast center liberty place revenue 666 720 000 usd 2006 net income 266 574 000 usd 2006 number of employees 450 website www.libertypropertytrust.com liberty property trust based in malvern pennsylvania united states is a real estate investment trust . liberty property trust owns over 65 000 000 square feet 6 000 000 m2 of office and industrial space in 20 markets throughout the united states and the united kingdom as of september 30 2006 update . history edit liberty property trust s predecessor company rouse & associates was formed in 1972 by willard g. rouse iii george congdon david hammers and menard doswell to develop warehouse space in southern new jersey . rouse & associates opened an office in jacksonville florida two years later . in 1974 rouse & associates purchased the great valley corporate center gvcc in malvern pennsylvania . this property was the first office park to incorporate a graduate college a business development and training center and a day care center . gvcc has grown to include over four million square feet of office space and remains a part of liberty property trust s portfolio to this day . between 1974 and 1994 rouse & associates expanded into many new markets including the baltimore washington corridor the lehigh valley the united kingdom and the piedmont triad . in 1987 rouse & associates opened one liberty place the first skyscraper in philadelphia to be taller than philadelphia city hall and the tallest building in pennsylvania from 1987 2007 . in 1994 rouse & associates becomes a real estate investment trust and changed its name to liberty property trust . rouse remained the chief executive officer of liberty property trust until his death from cancer in 2003 . liberty s most recent development is the comcast center in philadelphia . at 975 feet 297 m it is pennsylvania s tallest building . on february 19 2003 the company would develop a 70 acre nine building office park just east of the main gate in a joint venture with synterra partners of philadelphia . 1 on may 29 2003 the annual shareholders meeting of liberty property trust was held as scheduled despite the death of the company s founder willard g. rouse iii . he died of lung cancer at age 60 . 2 references edit liberty plans 70 acre office park and more . at liberty property gains and a big loss ; the ceo cited highlights and remembered founder willard g. rouse iii at the annual meeting . . external links edit philadelphia portal home page v t e philadelphia area corporations including the delaware valley list of companies based in the philadelphia area philadelphia based fortune 500 corporations rank in the 2015 list comcast 43 aramark 207 crown holdings 318 delaware valley based fortune 500 corporations rank in the 2015 list amerisourcebergen 16 dupont 87 lincoln national 223 universal health services 324 campbell soup 342 ugi 349 burlington stores inc. 500 other notable philadelphia based businesses amoroso s beneficial bank chemtura day & zimmermann fmc corporation independence blue cross pennsylvania real estate investment trust pep boys philadelphia media network radian group urban outfitters notable philadelphia based professional partnerships ballard spahr blank rome cozen o connor dechert drinker biddle & reath duane morris morgan lewis & bockius pepper hamilton saul ewing white and williams other notable delaware valley based businesses actua corporation airgas alliedbarton ametek aqua america asplundh bentley systems brandywine realty trust boscov s carpenter technology cephalon chemours christiana care health system crozer keystone health system david s bridal epam systems enersys hamilton lane liberty property trust penn mutual penn national gaming rita s italian ice sei investments slm sungard susquehanna international group vanguard toll brothers triumph group unisys viropharma vishay intertechnology vwr wawa wilmington trust w. l. gore and associates wsfs bank notable delaware valley based us headquarters of foreign businesses aberdeen asset management ace agustawestland astrazeneca delaware investments glaxosmithkline ing group keystone foods sap america siemens medical shire pharmaceuticals subaru teva pharmacueticals td bank notable delaware valley based division headquarters of us corporations acme cerberus capital management centocor johnson & johnson colonial penn conseco delmarva power exelon gsi commerce ebay hercules ashland mab paints sherwin williams mcneil laboratories j & j neoware hewlett packard peco exelon qvc liberty media rohm and haas dow chemical sunoco energy transfer tasty baking flowers foods retrieved from https en.wikipedia.org w index.php title liberty property trust & oldid 736103771 categories companies established in 1972companies listed on the new york stock exchangereal estate investment trusts of the united stateshidden categories articles needing additional references from september 2014all articles needing additional referencesarticles containing potentially dated statements from september 2006all articles containing potentially dated statements 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 25 august 2016 at 05 33 . text is available under the creative commons attribution sharealike license ; 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