<SUBMISSION>
<ACCESSION-NUMBER>0001209191-07-006875
<TYPE>4
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20070130
<FILING-DATE>20070201
<DATE-OF-FILING-DATE-CHANGE>20070201
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>SJW CORP
<CIK>0000766829
<ASSIGNED-SIC>4941
<IRS-NUMBER>770066628
<STATE-OF-INCORPORATION>CA
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>374 WEST SANTA CLARA STREET
<CITY>SAN JOSE
<STATE>CA
<ZIP>95113
<PHONE>4082797800
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>374 WEST SANTA CLARA STREET
<CITY>SAN JOSE
<STATE>CA
<ZIP>95113
</MAIL-ADDRESS>
</ISSUER>
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>ROTH W RICHARD
<CIK>0001245289
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>001-08966
<FILM-NUMBER>07573202
</FILING-VALUES>
<BUSINESS-ADDRESS>
<PHONE>4082799761
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>374 W SANTA CLARA STREET
<CITY>SAN JOSE
<STATE>CA
<ZIP>95113
</MAIL-ADDRESS>
</REPORTING-OWNER>
<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>2007-01-30</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000766829</issuerCik>
        <issuerName>SJW CORP</issuerName>
        <issuerTradingSymbol>SJW</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001245289</rptOwnerCik>
            <rptOwnerName>ROTH W RICHARD</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>374 W. SANTA CLARA STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SAN JOSE</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>95113</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President &amp; CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2007-01-30</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1251</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>39.93</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>133861</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>18300</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By separate property trust</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Represents 1,251 shares of Common Stock of SJW Corp. (the &quot;Company&quot;) withheld by the Company to satisfy withholding taxes per the terms of the Restricted Stock Unit Issuance Agreement between the Company and Mr. Roth dated January 30, 2006 (the &quot;Agreement&quot;).</footnote>
        <footnote id="F2">Includes 2,249 shares of Common Stock of the Company issued to Mr. Roth on January 30, 2007 under the Agreement.
Also includes 31,500 shares underlying restricted stock units and 100,112 shares of deferred restricted stock.  These shares may be subject in whole or in part to vesting schedules tied to Mr. Roth?s continued service with the Company or his performance and will be distributed as actual shares of common stock of the Company either at the time of vesting or at a specified time thereafter (including termination of service with the issuer).</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Suzy Papazian
Attorney-in-Fact for W. Richard Roth</signatureName>
        <signatureDate>2007-02-01</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
