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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
 TlTGUJEbouMca9N2yQ1n9dHG8uXnkmtUmPy5lCqrsyjm8UFBdvlW5ful/EWdwkkW
 ZvNvNSGlSpnc8MACLrDgDw==

<SEC-DOCUMENT>0001042776-08-000020.txt : 20080828
<SEC-HEADER>0001042776-08-000020.hdr.sgml : 20080828
<ACCEPTANCE-DATETIME>20080828155751
ACCESSION NUMBER:		0001042776-08-000020
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080828
FILED AS OF DATE:		20080828
DATE AS OF CHANGE:		20080828

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Piedmont Office Realty Trust, Inc.
		CENTRAL INDEX KEY:			0001042776
		STANDARD INDUSTRIAL CLASSIFICATION:	OPERATORS OF NONRESIDENTIAL BUILDINGS [6512]
		IRS NUMBER:				582328421
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		11695 JOHNS CREEK PARKWAY
		STREET 2:		STE 350
		CITY:			JOHNS CREEK
		STATE:			GA
		ZIP:			30097
		BUSINESS PHONE:		7704188800

	MAIL ADDRESS:	
		STREET 1:		11695 JOHNS CREEK PARKWAY
		STREET 2:		STE 350
		CITY:			JOHNS CREEK
		STATE:			GA
		ZIP:			30097

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	WELLS REAL ESTATE INVESTMENT TRUST INC
		DATE OF NAME CHANGE:	19980515

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			KEOGLER WILLIAM H JR
		CENTRAL INDEX KEY:			0001255840

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-25739
		FILM NUMBER:		081045528

	BUSINESS ADDRESS:	
		STREET 1:		6200 THE CORNERS PKWY
		STREET 2:		STE 250
		CITY:			NORCROSS
		STATE:			GA
		ZIP:			30092
		BUSINESS PHONE:		7702438122

	MAIL ADDRESS:	
		STREET 1:		6631 N.W. 61ST AVE.
		CITY:			PARKLAND
		STATE:			FL
		ZIP:			33067
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-08-28</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001042776</issuerCik>
        <issuerName>Piedmont Office Realty Trust, Inc.</issuerName>
        <issuerTradingSymbol>N/A</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001255840</rptOwnerCik>
            <rptOwnerName>KEOGLER WILLIAM H JR</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>6631 N.W. 61ST AVE.</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>PARKLAND</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>33067</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2008-08-28</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>68966</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>8.7</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>79713</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By William H. Keogler, Jr. Revocable Trust</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>Laura P. Moon, Attorney-in-Fact</signatureName>
        <signatureDate>2008-08-28</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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