<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2006-06-09</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001125532</issuerCik>
        <issuerName>MFC DEVELOPMENT CORP</issuerName>
        <issuerTradingSymbol>mfcd.ob</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001346464</rptOwnerCik>
            <rptOwnerName>JEFFREY S. EDELL &amp; ELAINE HASTINGS EDELL, AS TRUSTEES OF THE EDELL FAMILY TRUST DATED JUNE 1, 1991</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>5244 BRIDGETOWN PLACE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>WESTLAKE VILLAGE</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>91362</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common stock $.001 par value</value>
            </securityTitle>
            <transactionDate>
                <value>2006-06-09</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>D</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1950000</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3852957</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Pursuant to a transition services agreement dated June 9, 2006, between MFC Development Corp (&quot;the Company&quot;) and Jeffrey S. Edell, in connection with his resignation as President and Co-Chief Executive Officer of the Company, Mr. Edell is surrendering to the Company 500,000 shares of common stock that is owned beneficially by him in the name of Jeffrey S. Edell and Elaine Hastings Edell, as trustees of the Edell family trust dated June 1, 1991 (&quot;the Trust&quot;). In addition, Mr. Edell is also surrendering to the Company, the full amount of the 1,450,000 shares that he may be entitled to, which are being held in accordance with the terms of an escrow agreement dated Novemebr 29, 2005.</footnote>
        <footnote id="F2">Includes 2,957 shares owned by Jeffrey S. Edell's minor daughter.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Jeffrey S. Edell</signatureName>
        <signatureDate>2006-06-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
