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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 VpuyFv3LYS0j2LwQft9ecQ==

<SEC-DOCUMENT>0001209191-06-061802.txt : 20061129
<SEC-HEADER>0001209191-06-061802.hdr.sgml : 20061129
<ACCEPTANCE-DATETIME>20061129143302
ACCESSION NUMBER:		0001209191-06-061802
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20061031
FILED AS OF DATE:		20061129
DATE AS OF CHANGE:		20061129

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MAGUIRE JAMES J ET AL
		CENTRAL INDEX KEY:			0000937439

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-22280
		FILM NUMBER:		061244881

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		6106455001

	MAIL ADDRESS:	
		STREET 1:		306 EAST LANCASTER AVENUE
		CITY:			WYNNEWOOD
		STATE:			PA
		ZIP:			19096

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PHILADELPHIA CONSOLIDATED HOLDING CORP
		CENTRAL INDEX KEY:			0000909109
		STANDARD INDUSTRIAL CLASSIFICATION:	FIRE, MARINE & CASUALTY INSURANCE [6331]
		IRS NUMBER:				232202671
		STATE OF INCORPORATION:			PA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		ONE BALA PLAZA
		STREET 2:		SUITE 100
		CITY:			WYNNEWOOD
		STATE:			PA
		ZIP:			19004
		BUSINESS PHONE:		6106428400

	MAIL ADDRESS:	
		STREET 1:		ONE BALA PLAZA
		STREET 2:		SUITE 100
		CITY:			BALA CYNWYD
		STATE:			PA
		ZIP:			19004

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MAGUIRE HOLDING CORP
		DATE OF NAME CHANGE:	19930714
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2006-10-31</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000909109</issuerCik>
        <issuerName>PHILADELPHIA CONSOLIDATED HOLDING CORP</issuerName>
        <issuerTradingSymbol>PHLY</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000937439</rptOwnerCik>
            <rptOwnerName>MAGUIRE JAMES J ET AL</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>SUITE 100</rptOwnerStreet1>
            <rptOwnerStreet2>ONE BALA PLAZA</rptOwnerStreet2>
            <rptOwnerCity>BALA CYNWYD</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>19004</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chairman of the BOD</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock (no par value)</value>
            </securityTitle>
            <transactionDate>
                <value>2006-10-31</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>299448</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3791093</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                    <footnoteId id="F3"/>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock (no par value)</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>9287742</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F4"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">On October 31, 2006, Frances M. Maguire, James J. Maguire's wife, resigned as a co-Trustee of the trust for her son, Christopher J. Maguire, which was established under the James J. Maguire 1995 Annuity Trust dated as of February 9, 1995.  As a result of such resignation, a disposition of any indirect pecuniary interest in the shares owned by the trust attributed to James J. Maguire will be deemed to have occurred, and therefore any such indirect pecuniary interest in the shareholdings of the trust is no longer attributable to James J. Maguire.</footnote>
        <footnote id="F2">Not Applicable.</footnote>
        <footnote id="F3">Of these shares:  1,303,503 shares are held by a trust of which Ms. Frances M. Maguire, Mr. James J. Maguire's wife, is the trustee and Mr. James J. Maguire is the beneficiary; 1,124,792 shares are held in family trusts of which Mr. Maguire's wife is co-trustee; 774,798 shares are owned by the Maguire Foundation, of which Mr. Maguire is co-director with his wife, and 588,000 shares are owned of record by Mr. Maguire?s wife.  Mr. Maguire disclaims beneficial ownership of these 3,791,093 shares and the filing of this report is not an admission that he is a beneficial owner of these shares for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.</footnote>
        <footnote id="F4">Of these shares, 5,251,500 are owned jointly by Mr. Maguire and his wife, Frances M. Maguire.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Craig P. Keller, Attorney-In-Fact</signatureName>
        <signatureDate>2006-11-29</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----