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</LabelSeparator><Level>2</Level><ElementName>us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock</ElementName><ElementPrefix>us-gaap_</ElementPrefix><IsBaseElement>true</IsBaseElement><BalanceType>na</BalanceType><PeriodType>duration</PeriodType><IsReportTitle>false</IsReportTitle><IsSegmentTitle>false</IsSegmentTitle><IsCalendarTitle>false</IsCalendarTitle><IsEquityPrevioslyReportedAsRow>false</IsEquityPrevioslyReportedAsRow><IsEquityAdjustmentRow>false</IsEquityAdjustmentRow><IsBeginningBalance>false</IsBeginningBalance><IsEndingBalance>false</IsEndingBalance><IsReverseSign>false</IsReverseSign><PreferredLabelRole>verboseLabel</PreferredLabelRole><FootnoteIndexer /><Cells><Cell FlagID="0" ContextID="P01_01_2013To06_30_2013" UnitID=""><Id>1</Id><IsNumeric>false</IsNumeric><IsRatio>false</IsRatio><DisplayZeroAsNone>false</DisplayZeroAsNone><NumericAmount>0</NumericAmount><RoundedNumericAmount>0</RoundedNumericAmount><NonNumbericText>              &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif "&gt;  &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;MARGIN-TOP: 0pt; FONT: 10pt Times New Roman, Times, Serif; MARGIN-BOTTOM: 0pt"&gt;  &lt;strong&gt;1.&lt;/strong&gt; &lt;strong&gt;Business and  Organization&lt;/strong&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-INDENT: 0.5in; MARGIN: 0pt 0px 0pt 0.25in; FONT: 10pt Times New Roman, Times, Serif"&gt;  &amp;#160;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-INDENT: 22.4pt; MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif"&gt;  Gramercy Property Trust Inc., or the Company, is a  fully-integrated, self-managed commercial real estate  investment&amp;#160;company focused on acquiring and managing  income-producing office and industrial properties net leased to  high quality tenants in major markets throughout the United States.  The Company also operates an asset management business that manages  for third-parties, including the Company&amp;#8217;s joint venture  partners, commercial real estate assets throughout the United  States primarily leased to financial institutions and affiliated  users.&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-INDENT: 22.4pt; MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif"&gt;  &amp;#160;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-INDENT: 0.25in; MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif"&gt;  &lt;font style="FONT-SIZE: 10pt"&gt;&lt;/font&gt;     &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-INDENT: 0.25in; MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif"&gt;  &lt;font style="FONT-SIZE: 10pt"&gt;The Company was founded in 2004 as a  specialty finance REIT focused on originating and acquiring loans  and securities related to commercial and  multifamily&amp;#160;properties. In July 2012, following a strategic  review, the Company&amp;#8217;s board of directors announced a  repositioning of the Company as an equity REIT focused on acquiring  and&amp;#160;managing income producing net leased real estate. To  reflect this transformation, in April 2013 the Company changed its  name from Gramercy Capital Corp. to Gramercy Property Trust Inc.  and&amp;#160;began trading on the New York Stock Exchange under the new  symbol GPT.&lt;/font&gt;     &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-INDENT: 0.5in; MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif"&gt;  &lt;font style="FONT-SIZE: 10pt"&gt;&lt;/font&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-INDENT: 0.5in; MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif"&gt;  &lt;font style="FONT-SIZE: 10pt"&gt;&amp;#160;&lt;/font&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt"&gt;&lt;font  style="FONT-SIZE: 10pt"&gt;&lt;/font&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-INDENT: 0.25in; MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif"&gt;  &lt;font style="FONT-SIZE: 10pt"&gt;The Company seeks to acquire high  quality net leased properties&lt;font style="COLOR: black"&gt;&amp;#160;and  construct a diversified portfolio that generates stable,  predictable cash flows and protects investor capital over a long  investment horizon. The Company approaches the net lease market as  a value investor, looking to identify and acquire net leased  properties that the Company believes offer the most attractive risk  adjusted returns throughout market cycles. The Company focuses  primarily on office and industrial properties in target markets  with strong demographic and economic growth potential. The  Company&amp;#8217;s goal is to grow its existing portfolio through the  selective acquisition and become the pre-eminent owner of net  leased commercial office and industrial  properties.&lt;/font&gt;&lt;/font&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-INDENT: 0.25in; MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif"&gt;  &lt;font style="FONT-SIZE: 10pt"&gt;&amp;#160;&lt;/font&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-INDENT: 0.25in; MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif"&gt;  &lt;font style="FONT-SIZE: 10pt"&gt;As of June 30, 2013, the Company  owns, either directly or in joint venture, a portfolio of 105  income producing net leased office and industrial properties with  96% occupancy. Tenants include Bank of America, N.A., Nestl&amp;#233;  Waters, Federal Express, Con-Way Freight, Phillips Electronics,  Five Below, Inc. and others. As of that date, the Company&amp;#8217;s  asset management business, which operates under the name Gramercy  Asset Management, manages for third-parties approximately  $1,500,000 of commercial real estate assets.&lt;/font&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-INDENT: 0.25in; MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif"&gt;  &lt;font style="FONT-SIZE: 10pt"&gt;&amp;#160;&lt;/font&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-INDENT: 0.25in; MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif"&gt;  &lt;font style="FONT-SIZE: 10pt"&gt;During the three months ended June  30, 2013, the Company acquired 11 properties aggregating  approximately 650,000 square feet for a total purchase price of  approximately $&lt;font style=" FONT-SIZE: 10pt"&gt;111,200&lt;/font&gt;.  During the six months ended June 30, 2013, the Company acquired 14  properties aggregating approximately 1,600,000 square feet for a  total purchase price of approximately $158,220.&lt;/font&gt;     &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif"&gt;  &lt;font style="FONT-SIZE: 10pt"&gt;&amp;#160;&lt;/font&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif"&gt;  &lt;font style="FONT-SIZE: 10pt"&gt;&lt;/font&gt;&lt;/div&gt;  &lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt"&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-INDENT: 0.25in; MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif"&gt;  &lt;font style="FONT-SIZE: 10pt"&gt;On March 15, 2013, the Company  disposed of its Gramercy Finance segment and exited the commercial  real estate finance business. The disposal was completed pursuant  to a sale and purchase agreement&lt;/font&gt; &lt;font style="FONT-SIZE: 10pt"&gt;to transfer the collateral management and  sub-special servicing agreements for the Company&amp;#8217;s three  Collateralized Debt Obligations, or the CDOs,&amp;#160;to CWCapital  Investments LLC, or CWCapital, for proceeds of $&lt;font style=" FONT-SIZE: 10pt"&gt;6,291&lt;/font&gt; in cash, after expenses. The  Company retained its non-investment grade subordinate bonds,  preferred shares, and ordinary shares, or the Retained CDO Bonds,  in the CDOs, which may&amp;#160;allow the&amp;#160;Company to recoup  additional proceeds over the remaining life of the CDOs based upon  resolution of underlying assets within the CDOs. However, there is  no guarantee that the Company will realize any proceeds from the  Retained CDO Bonds or what the timing of these proceeds might be.  The carrying value of the Retained CDO Bonds as of June 30, 2013 is  $&lt;font style=" FONT-SIZE: 10pt"&gt;7,645&lt;/font&gt;. In February 2013, the  Company also sold a portfolio of repurchased notes previously  issued by two of its three CDOs, generating cash proceeds of $&lt;font  style=" FONT-SIZE: 10pt"&gt;34,381&lt;/font&gt;. In addition, the Company  expects to receive additional cash proceeds for past CDO servicing  advances when specific assets within the CDOs are liquidated. The  carrying value of the receivable for servicing advance  reimbursements as of June 30, 2013 is $&lt;font style=" FONT-SIZE: 10pt"&gt;14,604&lt;/font&gt;, including accrued interest at the  prime rate of &lt;font style=" FONT-SIZE: 10pt"&gt;3.25&lt;/font&gt;%. On March  15, 2013, the Company deconsolidated the assets and liabilities of  Gramercy Finance from the Company&amp;#8217;s Condensed Consolidated  Financial Statements and recognized a gain on the disposal of  $&lt;font style=" FONT-SIZE: 10pt"&gt;389,140&lt;/font&gt; within discontinued  operations. For a further discussion regarding the disposal of the  Gramercy Finance segment see Note 3 &amp;#8220;Dispositions and Assets  Held-for-Sale&amp;#8221;.&lt;/font&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-INDENT: 0.25in; MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif"&gt;  &amp;#160;&amp;#160;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-INDENT: 0.25in; MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif"&gt;  The Company has elected to be taxed as a real estate investment  trust, or REIT, under the Internal Revenue Code of 1986, as  amended, or the Internal Revenue Code, and generally will not be  subject to U.S. federal income taxes to the extent it distributes  its taxable income, if any, to its stockholders. In the past the  Company has established, and may in the future establish taxable  REIT subsidiaries, or TRSs, to&amp;#160;effectuate various taxable  transactions. Those TRSs would incur U.S. federal, state and local  taxes on the taxable income from their activities. The  Company&amp;#8217;s Asset Management business is conducted in a TRS and  substantially all of the provision for taxes on the Condensed  Consolidated Statement of Operations and Comprehensive Income  (Loss) is related to this business.&lt;/div&gt;  &lt;/div&gt;  &lt;/div&gt;  &lt;/div&gt;        </NonNumbericText><FootnoteIndexer /><CurrencyCode /><CurrencySymbol /><IsIndependantCurrency>false</IsIndependantCurrency><ShowCurrencySymbol>false</ShowCurrencySymbol><DisplayDateInUSFormat>false</DisplayDateInUSFormat></Cell></Cells><ElementDataType>nonnum:textBlockItemType</ElementDataType><SimpleDataType>na</SimpleDataType><ElementDefenition>The entire disclosure for organization, consolidation and basis of presentation of financial statements disclosure.</ElementDefenition><ElementReferences>Reference 1: http://www.xbrl.org/2003/role/presentationRef

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