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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>terseLabel</PreferredLabelRole><FootnoteIndexer /><Cells><Cell FlagID="0" ContextID="D2013Q2YTD" UnitID=""><Id>1</Id><IsNumeric>false</IsNumeric><IsRatio>false</IsRatio><DisplayZeroAsNone>false</DisplayZeroAsNone><NumericAmount>0</NumericAmount><RoundedNumericAmount>0</RoundedNumericAmount><NonNumbericText>&lt;div style="font-family:Times New Roman;font-size:10pt;"&gt;&lt;div style="line-height:120%;font-size:10pt;"&gt;&lt;font style="font-family:inherit;font-size:10pt;font-weight:bold;"&gt;ORGANIZATION AND BUSINESS&lt;/font&gt;&lt;/div&gt;&lt;div style="line-height:120%;padding-bottom:12px;text-align:justify;font-size:10pt;"&gt;&lt;font style="font-family:inherit;font-size:10pt;"&gt;Wells Real Estate Fund IX, L.P. (the "Partnership") is a Georgia public limited partnership with Leo F. Wells, III and Wells Partners,&amp;#160;L.P. ("Wells Partners"), a Georgia nonpublic limited partnership, serving as its general partners (collectively, the&amp;#160;"General Partners"). Wells Capital, Inc. ("Wells Capital") serves as the corporate general partner of Wells Partners. Wells Capital is a wholly owned subsidiary of Wells Real Estate Funds, Inc. ("WREF"). Leo F. Wells, III is the president and sole director of Wells Capital and the president, sole director, and sole owner of WREF. The Partnership was formed on August&amp;#160;15, 1994 for the purpose of acquiring, developing, constructing, owning, operating, improving, leasing, and managing income-producing commercial properties for investment purposes. Upon subscription, limited partners elected to have their units treated as Class&amp;#160;A Units or Class&amp;#160;B Units. Limited partners have the right to change their prior elections to have some or all of their units treated as Class&amp;#160;A or Class B Units one time during each quarterly accounting period. Limited partners may vote to, among other things: (a) amend the partnership agreement, subject to certain limitations; (b) change the business purpose or investment objectives of the Partnership; (c) add or remove a general partner; (d) elect a new general partner; (e) dissolve the Partnership; (f) authorize a merger or a consolidation of the Partnership; and (g)&amp;#160;approve a sale involving all or substantially all of the Partnership's assets, subject to certain limitations. A majority vote on any of the above-described matters will bind the Partnership without the concurrence of the General Partners. Each limited partnership unit has equal voting rights regardless of class.&lt;/font&gt;&lt;/div&gt;&lt;div style="line-height:120%;padding-bottom:12px;text-align:justify;font-size:10pt;"&gt;&lt;font style="font-family:inherit;font-size:10pt;"&gt;On January&amp;#160;5, 1996, the Partnership commenced a public offering of up to &lt;/font&gt;&lt;font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;"&gt;$35,000,000&lt;/font&gt;&lt;font style="font-family:inherit;font-size:10pt;"&gt; of Class&amp;#160;A or Class B limited partnership units (&lt;/font&gt;&lt;font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;"&gt;$10.00&lt;/font&gt;&lt;font style="font-family:inherit;font-size:10pt;"&gt; per unit) pursuant to a Registration Statement filed on Form S-11 under the Securities Act. The offering was terminated on December&amp;#160;30, 1996, at which time the Partnership had sold approximately &lt;/font&gt;&lt;font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;"&gt;2,935,931&lt;/font&gt;&lt;font style="font-family:inherit;font-size:10pt;"&gt; Class&amp;#160;A Units and &lt;/font&gt;&lt;font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;"&gt;564,069&lt;/font&gt;&lt;font style="font-family:inherit;font-size:10pt;"&gt; Class B Units representing total limited partner capital contributions of &lt;/font&gt;&lt;font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;"&gt;$35,000,000&lt;/font&gt;&lt;font style="font-family:inherit;font-size:10pt;"&gt;.&lt;/font&gt;&lt;/div&gt;&lt;div style="line-height:120%;text-align:justify;font-size:10pt;"&gt;&lt;font style="font-family:inherit;font-size:10pt;"&gt;The Partnership owns interests in all of its real estate assets through joint ventures with other entities affiliated with the General Partners and Piedmont Operating Partnership, LP ("Piedmont OP"), formerly known as Wells Operating Partnership, L.P.  Piedmont OP is a Delaware limited partnership with Piedmont Office Realty Trust, Inc. ("Piedmont REIT"), formerly known as Wells Real Estate Investment Trust, Inc., serving as its general partner. Piedmont REIT is a Maryland corporation that has elected to be taxed as a real estate investment trust. During the periods presented, the Partnership owned interests in the following joint ventures (the "Joint Ventures") and properties:&lt;/font&gt;&lt;/div&gt;&lt;div style="line-height:120%;text-align:justify;font-size:10pt;"&gt;&lt;font style="font-family:inherit;font-size:10pt;"&gt;&lt;br clear="none"/&gt;&lt;/font&gt;&lt;/div&gt;&lt;div style="line-height:120%;font-size:10pt;"&gt;&lt;div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"&gt;&lt;table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;width:100%;border-collapse:collapse;text-align:left;"&gt;&lt;tr&gt;&lt;td colspan="4" rowspan="1"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td width="25%" rowspan="1" colspan="1"&gt;&lt;/td&gt;&lt;td width="31%" rowspan="1" colspan="1"&gt;&lt;/td&gt;&lt;td width="13%" rowspan="1" colspan="1"&gt;&lt;/td&gt;&lt;td width="31%" rowspan="1" colspan="1"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:top;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"&gt;&lt;div style="text-align:center;font-size:10pt;"&gt;&lt;font style="font-family:inherit;font-size:10pt;font-weight:bold;"&gt;Joint Venture&lt;/font&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:top;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"&gt;&lt;div style="text-align:center;font-size:10pt;"&gt;&lt;font style="font-family:inherit;font-size:10pt;font-weight:bold;"&gt;Joint Venture Partners&lt;/font&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:top;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"&gt;&lt;div style="text-align:center;font-size:10pt;"&gt;&lt;font style="font-family:inherit;font-size:10pt;font-weight:bold;"&gt;Ownership %&lt;/font&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:top;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"&gt;&lt;div style="text-align:center;font-size:10pt;"&gt;&lt;font style="font-family:inherit;font-size:10pt;font-weight:bold;"&gt;Properties&lt;/font&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:top;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"&gt;&lt;div style="vertical-align:top;font-size:10pt;"&gt;&lt;font style="font-family:inherit;font-size:10pt;vertical-align:top;"&gt;Fund VIII and Fund IX Associates&lt;/font&gt;&lt;/div&gt;&lt;div style="vertical-align:top;font-size:10pt;"&gt;&lt;font style="font-family:inherit;font-size:10pt;vertical-align:top;"&gt;("Fund VIII-IX Associates")&lt;/font&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:top;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"&gt;&lt;div style="vertical-align:top;font-size:10pt;"&gt;&lt;font style="font-family:inherit;font-size:10pt;vertical-align:top;"&gt;&amp;#8226;&amp;#160;Wells&amp;#160;Real&amp;#160;Estate&amp;#160;Fund&amp;#160;VIII,&amp;#160;L.P.&lt;/font&gt;&lt;/div&gt;&lt;div style="vertical-align:top;font-size:10pt;"&gt;&lt;font style="font-family:inherit;font-size:10pt;vertical-align:top;"&gt;&amp;#8226;&amp;#160;Wells Real Estate Fund&amp;#160;IX, L.P.&lt;/font&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:top;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"&gt;&lt;div style="text-align:center;font-size:10pt;"&gt;&lt;font style="font-family:inherit;font-size:10pt;"&gt;54.8%&lt;br clear="none"/&gt;45.2%&lt;/font&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:top;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"&gt;&lt;div style="vertical-align:top;font-size:10pt;"&gt;&lt;font style="font-family:inherit;font-size:10pt;vertical-align:top;"&gt;1.&amp;#160;US Cellular Building&lt;/font&gt;&lt;font style="font-family:inherit;font-size:10pt;vertical-align:top;"&gt;&lt;sup style="vertical-align:top;line-height:120%;font-size:7pt"&gt;(1)&lt;/sup&gt;&lt;/font&gt;&lt;/div&gt;&lt;div style="vertical-align:top;text-indent:13px;font-size:10pt;"&gt;&lt;font style="font-family:inherit;font-size:10pt;font-style:italic;vertical-align:top;"&gt;A four-story office building located &lt;/font&gt;&lt;/div&gt;&lt;div style="vertical-align:top;text-indent:13px;font-size:10pt;"&gt;&lt;font style="font-family:inherit;font-size:10pt;font-style:italic;vertical-align:top;"&gt;in Madison, Wisconsin&lt;/font&gt;&lt;/div&gt;&lt;div style="vertical-align:top;font-size:5pt;"&gt;&lt;font style="font-family:inherit;font-size:5pt;vertical-align:top;"&gt;&amp;#160;&lt;/font&gt;&lt;/div&gt;&lt;div style="vertical-align:top;font-size:10pt;"&gt;&lt;font style="font-family:inherit;font-size:10pt;vertical-align:top;"&gt;2.&amp;#160;305 Interlocken Parkway&lt;/font&gt;&lt;/div&gt;&lt;div style="vertical-align:top;text-indent:13px;font-size:10pt;"&gt;&lt;font style="font-family:inherit;font-size:10pt;font-style:italic;vertical-align:top;"&gt;A two-story office building located &lt;/font&gt;&lt;/div&gt;&lt;div style="vertical-align:top;text-indent:13px;font-size:10pt;"&gt;&lt;font style="font-family:inherit;font-size:10pt;font-style:italic;vertical-align:top;"&gt;in Broomfield, Colorado&lt;/font&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:top;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"&gt;&lt;div style="vertical-align:top;font-size:10pt;"&gt;&lt;font style="font-family:inherit;font-size:10pt;vertical-align:top;"&gt;The Fund IX, Fund X, Fund XI and REIT&amp;#160;Joint Venture&lt;/font&gt;&lt;/div&gt;&lt;div style="vertical-align:top;font-size:10pt;"&gt;&lt;font style="font-family:inherit;font-size:10pt;vertical-align:top;"&gt;("Fund IX-X-XI-REIT Associates")&lt;/font&gt;&lt;font style="font-family:inherit;font-size:10pt;vertical-align:top;"&gt;&lt;sup style="vertical-align:top;line-height:120%;font-size:7pt"&gt;(2)&lt;/sup&gt;&lt;/font&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:top;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"&gt;&lt;div style="vertical-align:top;font-size:10pt;"&gt;&lt;font style="font-family:inherit;font-size:10pt;vertical-align:top;"&gt;&amp;#8226;&amp;#160;Wells Real Estate Fund IX, L.P.&lt;/font&gt;&lt;/div&gt;&lt;div style="vertical-align:top;font-size:10pt;"&gt;&lt;font style="font-family:inherit;font-size:10pt;vertical-align:top;"&gt;&amp;#8226;&amp;#160;Wells Real Estate Fund&amp;#160;X, L.P.&lt;/font&gt;&lt;/div&gt;&lt;div style="vertical-align:top;font-size:10pt;"&gt;&lt;font style="font-family:inherit;font-size:10pt;vertical-align:top;"&gt;&amp;#8226;&amp;#160;Wells Real Estate Fund&amp;#160;XI, L.P.&lt;/font&gt;&lt;/div&gt;&lt;div style="vertical-align:top;font-size:10pt;"&gt;&lt;font style="font-family:inherit;font-size:10pt;vertical-align:top;"&gt;&amp;#8226;&amp;#160;Piedmont&amp;#160;Operating&amp;#160;Partnership,&amp;#160;LP&lt;/font&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:top;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"&gt;&lt;div style="text-align:center;font-size:10pt;"&gt;&lt;font style="font-family:inherit;font-size:10pt;"&gt;39.0%&lt;br clear="none"/&gt;48.5%&lt;br clear="none"/&gt;8.8%&lt;br clear="none"/&gt;3.7%&lt;/font&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:top;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"&gt;&lt;div style="font-size:10pt;"&gt;&lt;font style="font-family:inherit;font-size:10pt;"&gt;No properties owned during the periods presented.&lt;/font&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;/div&gt;&lt;table cellpadding="0" cellspacing="0" style="padding-top:4px;padding-bottom:4px;font-family:Times New Roman; font-size:10pt;"&gt;&lt;tr&gt;&lt;td style="width:48px;" rowspan="1" colspan="1"&gt;&lt;/td&gt;&lt;td rowspan="1" colspan="1"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:top" rowspan="1" colspan="1"&gt;&lt;div style="line-height:120%;font-size:9pt;padding-left:24px;"&gt;&lt;font style="font-family:inherit;font-size:9pt;"&gt;&lt;sup style="vertical-align:top;line-height:120%;font-size:6pt"&gt;(1)&lt;/sup&gt;&amp;#160;&lt;/font&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:top;" rowspan="1" colspan="1"&gt;&lt;div style="line-height:120%;text-align:justify;font-size:9pt;"&gt;&lt;font style="font-family:inherit;font-size:9pt;font-style:italic;"&gt;This property sold in March 2013.&lt;/font&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;table cellpadding="0" cellspacing="0" style="padding-top:4px;padding-bottom:4px;font-family:Times New Roman; font-size:10pt;"&gt;&lt;tr&gt;&lt;td style="width:48px;" rowspan="1" colspan="1"&gt;&lt;/td&gt;&lt;td rowspan="1" colspan="1"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td style="vertical-align:top" rowspan="1" colspan="1"&gt;&lt;div style="line-height:120%;font-size:9pt;padding-left:24px;"&gt;&lt;font style="font-family:inherit;font-size:9pt;"&gt;&lt;sup style="vertical-align:top;line-height:120%;font-size:6pt"&gt;(2)&lt;/sup&gt;&amp;#160;&lt;/font&gt;&lt;/div&gt;&lt;/td&gt;&lt;td style="vertical-align:top;" rowspan="1" colspan="1"&gt;&lt;div style="line-height:120%;text-align:justify;font-size:9pt;"&gt;&lt;font style="font-family:inherit;font-size:9pt;font-style:italic;"&gt;This joint venture wound up its affairs in 2011 and was terminated in the first quarter of 2012.&lt;/font&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;div style="line-height:120%;padding-left:4px;padding-bottom:4px;padding-top:4px;text-align:justify;padding-left:48px;font-size:9pt;"&gt;&lt;font style="font-family:inherit;font-size:9pt;"&gt;&lt;br clear="none"/&gt;&lt;/font&gt;&lt;/div&gt;&lt;div style="line-height:120%;text-align:justify;font-size:10pt;"&gt;&lt;font style="font-family:inherit;font-size:10pt;"&gt;Wells Real Estate Fund VIII, L.P. and Wells Real Estate Fund XI, L.P. are affiliated with the Partnership through common general partners. Wells Real Estate Fund X, L.P. was affiliated with the Partnership through one or more common general partners prior to its dissolution. Each of the properties described above was acquired on an all-cash basis. 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 -URI http://asc.fasb.org/subtopic&amp;trid=2209116



Reference 15: http://www.xbrl.org/2003/role/presentationRef

 -Publisher FASB

 -Name Accounting Standards Codification

 -Topic 272

 -SubTopic 10

 -Section 50

 -Paragraph 3

 -URI http://asc.fasb.org/extlink&amp;oid=6373374&amp;loc=d3e70478-108055



Reference 16: http://www.xbrl.org/2003/role/presentationRef

 -Publisher AICPA

 -Name Statement of Position (SOP)

 -Number 94-6

 -Paragraph 10

 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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