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USD ($)

USD ($) / shares

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&lt;table style="font-family: Times New Roman; font-size: 10pt;" cellspacing="0" cellpadding="0" width="100%"&gt;
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&lt;div&gt;&lt;font style="display: inline; font-family: Times New Roman; font-size: 10pt; font-weight: bold;" class="_mt"&gt;18.&amp;nbsp;&amp;nbsp;&lt;/font&gt;&lt;/div&gt;&lt;/td&gt;
&lt;td&gt;

&lt;div style="text-indent: 0pt; margin-left: 0pt; margin-right: 0pt;" align="justify"&gt;&lt;font style="display: inline; font-family: Times New Roman; font-size: 10pt; font-weight: bold;" class="_mt"&gt;&lt;font style="display: inline; text-decoration: underline;" class="_mt"&gt;RELATED PARTY TRANSACTIONS&lt;/font&gt;&lt;/font&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;

&lt;div style="text-indent: 0pt; display: block;"&gt;&lt;br /&gt;&lt;/div&gt;

&lt;div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt;" align="justify"&gt;&lt;font style="display: inline; font-family: Times New Roman; font-size: 10pt;" class="_mt"&gt;William L. Mack, Chairman of the Board of Directors of the Corporation, David S. Mack, a director of the Corporation, and Earle I. Mack, a former director of the Corporation, are the executive officers, directors and stockholders of a corporation that leases approximately 7,801 square feet at one of the Company's office properties, which is scheduled to expire in November 2011.&amp;nbsp;&amp;nbsp;The Company has recognized $250,000, $255,000 and $258,000 in revenue under this lease for the years ended December 31, 2010, 2009 and 2008, respectively, and had $0 accounts receivable from the corporation as of December 31, 2010 and 2009.&lt;/font&gt;&lt;/div&gt;

&lt;div style="text-indent: 0pt; display: block;"&gt;&lt;br /&gt;&lt;/div&gt;

&lt;div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt;" align="justify"&gt;&lt;font style="display: inline; font-family: Times New Roman; font-size: 10pt;" class="_mt"&gt;The Company has conducted business with certain entities ("RMC Entity" or "RMC Entities"), whose principals include Timothy M. Jones (a former president of the Corporation), Martin S. Berger (former member of the Corporation's Board of Directors) and Robert F. Weinberg (current member of the Corporation's Board of Directors).&amp;nbsp;&amp;nbsp;In connection with the Company's acquisition of 65 Class A properties from The Robert Martin Company ("Robert Martin") on January 31, 1997, as subsequently modified, the Company granted Robert Martin the right to designate one seat on the Corporation's Board of Directors ("RM Board Seat"), which right has since expired.&amp;nbsp;&amp;nbsp;The RM Board Seat had historically been shared between Robert F. Weinberg and Martin S. Berger, each of whom had agreed that, for so long as either of them serves on the Board of Directors, that such board seat would be rotated among Mr.&amp;nbsp;Berger and Mr.&amp;nbsp;Weinberg annually at the time of each annual meeting of stockholders.&amp;nbsp;&amp;nbsp;At the Corporation's 2003 annual meeting of stockholders, Mr. Berger was elected to the Board of Directors and he continued to share his board seat with Mr. Weinberg.&amp;nbsp;&amp;nbsp;At the Corporation's 2006 annual meeting of stockholders, Mr. Weinberg was elected to the Board of Directors and he continued to share his board seat with Mr. Berger.&amp;nbsp;&amp;nbsp;At the Corporation's 2009 annual meeting of stockholders, Mr. Berger was elected to the Board of Directors and he continues to share his board seat with Mr. Weinberg.&amp;nbsp;&amp;nbsp;The business that the Company has conducted with RMC Entities was as follows:&lt;/font&gt;&lt;/div&gt;

&lt;div style="text-indent: 0pt; display: block;"&gt;&lt;br /&gt;&lt;/div&gt;

&lt;div&gt;

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&lt;div&gt;&lt;font style="display: inline; font-family: Times New Roman; font-size: 10pt;" class="_mt"&gt;(1)&amp;nbsp;&amp;nbsp;&lt;/font&gt;&lt;/div&gt;&lt;/td&gt;
&lt;td&gt;

&lt;div style="text-indent: 0pt; margin-left: 0pt; margin-right: 0pt;" align="justify"&gt;&lt;font style="display: inline; font-family: Times New Roman; font-size: 10pt;" class="_mt"&gt;The Company provides management, leasing and construction-related services to properties in which RMC Entities have an ownership interest.&amp;nbsp;&amp;nbsp;The Company recognized approximately $1.4 million, $1.6 million and $2.5 million in revenue from RMC Entities for the years ended December 31, 2010, 2009 and 2008, respectively.&amp;nbsp;&amp;nbsp;As of December 31, 2010 and 2009, respectively, the Company had $75,000 and $0 in accounts receivable from RMC Entities.&lt;/font&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;

&lt;div style="text-indent: 0pt; display: block;"&gt;&lt;br /&gt;&lt;/div&gt;

&lt;div&gt;

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&lt;div&gt;&lt;font style="display: inline; font-family: Times New Roman; font-size: 10pt;" class="_mt"&gt;(2)&amp;nbsp;&amp;nbsp;&lt;/font&gt;&lt;/div&gt;&lt;/td&gt;
&lt;td&gt;

&lt;div style="text-indent: 0pt; margin-left: 0pt; margin-right: 0pt;" align="justify"&gt;&lt;font style="display: inline; font-family: Times New Roman; font-size: 10pt;" class="_mt"&gt;An RMC Entity leases space at one of the Company's office properties for approximately 4,860 square feet on a month-to-month basis.&amp;nbsp;&amp;nbsp;The Company has recognized $137,000, $140,000 and $133,000, in revenue under this lease for the years ended December&amp;nbsp;31,&amp;nbsp;2010, 2009 and 2008, respectively, and had $0 and $500 accounts receivable due from the RMC Entity, as of December 31, 2010 and 2009, respectively.&lt;/font&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;

&lt;div style="text-indent: 0pt; display: block;"&gt;&lt;br /&gt;&lt;/div&gt;

&lt;div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt;" align="justify"&gt;&lt;font style="display: inline; font-family: Times New Roman; font-size: 10pt;" class="_mt"&gt;The Company provides administrative support and related services to John J. Cali, who served as the Chairman Emeritus and a Board member of the Corporation, for which it was reimbursed $101,000, $115,000 and $153,000 from Mr. Cali for the years ended December 31, 2010, 2009 and 2008, respectively.&amp;nbsp;&amp;nbsp;An affiliate of Mr. Cali has leases&amp;nbsp;&amp;nbsp;totaling 2,631 square feet of space at one of the Company's office properties, which are scheduled to expire at the end of 2011.&amp;nbsp;&amp;nbsp;The Company recognized approximately $68,000, $68,000 and $67,000 in total revenue under the leases for the years ended December 31, 2010, 2009 and 2008, respectively, and had $17,000 and $0 in accounts receivable from the affiliate as of December 31, 2010 and 2009.&lt;/font&gt;&lt;/div&gt;&lt;br /&gt;&lt;/div&gt; &lt;/div&gt;</NonNumbericText><NonNumericTextHeader>18.&amp;nbsp;&amp;nbsp;


RELATED PARTY TRANSACTIONS



William L. Mack, Chairman of the Board of Directors of the Corporation, David S. Mack, a director of the</NonNumericTextHeader><FootnoteIndexer /><CurrencyCode /><CurrencySymbol /><IsIndependantCurrency>false</IsIndependantCurrency><ShowCurrencySymbol>false</ShowCurrencySymbol><DisplayDateInUSFormat>false</DisplayDateInUSFormat><hasSegments>false</hasSegments><hasScenarios>false</hasScenarios></Cell></Cells><OriginalInstanceReportColumns /><Unit>Other</Unit><ElementDataType>us-types:textBlockItemType</ElementDataType><SimpleDataType>string</SimpleDataType><ElementDefenition>This element may be used for the entire related party transactions disclosure as a single block of text. Disclosure may include:  the nature of the relationship(s), a description of the transactions, the amount of the transactions, the effects of any change in the method of establishing the terms of the transaction from the previous period, stated interest rate, expiration date, terms and manner of settlement per the agreement with the related party, and amounts due to or from related parties. If the entity and one or more other entities are under common ownership or management control and this control affects the operating results or financial position, disclosure includes the nature of the control relationship even if there are no transactions between the entities. Disclosure may also include the aggregate amount of current and deferred tax expense for each statement of earnings presented where the entity is a member of a group that files a consolidated tax return, the amount of any tax related balances due to or from affiliates as of the date of each statement of financial position presented, the principal provisions of the method by which the consolidated amount of current and deferred tax expense is allocated to the members of the group and the nature and effect of any changes in that method. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.</ElementDefenition><ElementReferences>Reference 1: http://www.xbrl.org/2003/role/presentationRef
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