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

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2009-03-13</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001029800</issuerCik>
        <issuerName>URSTADT BIDDLE PROPERTIES INC</issuerName>
        <issuerTradingSymbol>UBA</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001439436</rptOwnerCik>
            <rptOwnerName>Bannon Kevin j</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>62 CROTON AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MOUNT KISCO</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10549</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2009-03-13</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>8000</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>12.404</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>21100</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">On March 13, 2009, Mr. Bannon purchased 8,000 shares of Class A Common Stock at prices ranging from $12.3012 to $12.4900 per share, with a weighted average price of $12.4044.  Upon request by the Commission, the Issuer, or a shareholder of the Issuer, full information regarding the number of shares purchased and the separate prices at which they were purchased will be provided.</footnote>
        <footnote id="F2">This figure includes 900 restricted shares of Class A Common Stock issued pursuant to the Issuer's Amended and Restated Restricted Stock Award Plan.</footnote>
        <footnote id="F3">The Reporting Person is the direct beneficial owner of 15,900 shares of Class A Common Stock.  Additionally, he is the indirect beneficial owner of 5,200 shares of Class A Common Stock of which 1,700 shares are held in the name of the Kevin J. Bannon IRA for the benefit of Kevin J. Bannon, 1,500 shares are owned by the Katherine E. Bannon 2001 Revocable Trust dated 10/22/01, for the benefit of Katherine E. Bannon, Mr. Bannon's daughter, 1,000 shares are owned by the Michael E. Bannon 2000 Revocable Trust dated 8/17/00, for the benefit of Michael E. Bannon, Mr. Bannon's son, and 1,000 shares are owned by the Trust under the will of Nathan B. Epstein for the benefit of Susan E. Bannon [Mr. Bannon's wife], et al.  Mr. Bannon is co-trustee of each of the abovementioned trusts.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Kevin J. Bannon by Thomas D. Myers as Attorney-in-Fact</signatureName>
        <signatureDate>2009-03-16</signatureDate>
    </ownerSignature>
</ownershipDocument>
