<SUBMISSION>
<ACCESSION-NUMBER>0001209191-07-000485
<TYPE>4
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20061229
<FILING-DATE>20070103
<DATE-OF-FILING-DATE-CHANGE>20070103
<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>YOO R SCOTT
<CIK>0001245339
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>001-08966
<FILM-NUMBER>07503548
</FILING-VALUES>
<BUSINESS-ADDRESS>
<PHONE>4082797961
</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>2006-12-29</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001245339</rptOwnerCik>
            <rptOwnerName>YOO R SCOTT</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>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Operating Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2006-12-29</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>2064</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>38.76</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2566</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2007-01-02</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>417</value>
                    <footnoteId id="F3"/>
                    <footnoteId id="F4"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>28.79</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2983</value>
                    <footnoteId id="F5"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Represents 2,064 restricted stock units granted to the reporting person under the issuer?s Long-Term Incentive Plan.  Each restricted stock unit will entitle the reporting person to receive one share of the issuer?s common stock when that unit vests.  The units will vest in four successive annual installments upon the reporting person?s completion of each year of service with the issuer over the four-year period measured from the issue date of the units, subject to accelerated vesting under certain prescribed circumstances.</footnote>
        <footnote id="F2">Includes 2,064 shares underlying the restricted stock units which are subject to this Form 4 and 502 shares of deferred stock which may be subject in whole or in part to vesting schedules tied to the reporting person?s continued service with the issuer and which will be distributed as actual shares of the issuer?s common stock either at the time of vesting or at a specified time thereafter (including termination of service with the issuer).</footnote>
        <footnote id="F3">The securities represent deferred shares of the issuer?s common stock credited to the reporting person?s deferred compensation account pursuant to dividend equivalent rights.  Those rights resulted initially in the addition of cash sums to the account equal to the dividends which would have been paid  during the 2006 calendar year on the deferred stock credited to such account had that stock actually been issued and outstanding on each dividend payment date, and the accumulated sums were then converted into additional shares of deferred stock on the first business day of the following year based on the average of the closing selling prices of the issuer?s common stock on each of the dates during the 2006 calendar year on which actual dividends on the common stock were paid.</footnote>
        <footnote id="F4">The resulting shares of deferred stock may be subject in whole or in part to vesting schedules tied to the reporting person?s continued service with the issuer and will be distributed as actual shares of the issuer?s common stock either at the time of vesting or at a specified time thereafter (including termination of service with the issuer).</footnote>
        <footnote id="F5">Includes 2,064 shares underlying the restricted stock units which are subject to this Form 4 and 919 shares of deferred stock which may be subject in whole or in part to vesting schedules tied to the reporting person?s continued service with the issuer and which will be distributed as actual shares of the issuer?s common stock 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 R. Scott Yoo</signatureName>
        <signatureDate>2007-01-03</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
