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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
 Us79Mvn+rP/nWPWxoegAAD/BCgTUro1R53/YnyVi6wdMUqNdtRN4R86JHMpBBz72
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<SEC-DOCUMENT>0001209191-07-069989.txt : 20071214
<SEC-HEADER>0001209191-07-069989.hdr.sgml : 20071214
<ACCEPTANCE-DATETIME>20071214171829
ACCESSION NUMBER:		0001209191-07-069989
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20071213
FILED AS OF DATE:		20071214
DATE AS OF CHANGE:		20071214

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:		071308143

	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>2007-12-13</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>2007-12-13</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>50000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>40.60</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>9655109</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F2"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock (no par value)</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2956030</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Purchase was made from James J. Maguire, Jr., Mr. Maguire's son.</footnote>
        <footnote id="F2">Of these shares, 5,251,500 are owned jointly by Mr. Maguire and his wife, Frances M. Maguire.</footnote>
        <footnote id="F3">Of these shares:  989,836 shares are held by trusts of which Ms. Frances M. Maguire, Mr. James J. Maguire's wife, is the trustee and the children of Ms. Maguire and Mr. James J. Maguire are the beneficiaries; 603,396 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 2,956,030 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>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Craig P. Keller, Attorney-In-Fact</signatureName>
        <signatureDate>2007-12-14</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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