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

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2017-06-21</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001688852</issuerCik>
        <issuerName>Safety, Income &amp; Growth, Inc.</issuerName>
        <issuerTradingSymbol>SAFE</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001191821</rptOwnerCik>
            <rptOwnerName>ADLER DEAN S</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2929 ARCH STREET, SUITE 1650</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>PHILADELPHIA</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>19104</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock, par value $0.01 per share</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>750000</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnotes</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The 750,000 reported shares of common stock are owned of record by SFTY VII-B, LLC (&quot;SFTY&quot;).</footnote>
        <footnote id="F2">SFTY's sole member is Lubert-Adler Real Estate Fund VII-B, L.P. (&quot;L-A RE Fund VII-B&quot;). L-A RE Fund VII-B's general partner is Lubert-Adler Group VII-B, LLC (&quot;L-A Group VII-B LLC&quot;). L-A Group VII-B LLC's sole member is Lubert-Adler Group VII-B Holdings, L.P. (&quot;L-A Holdings VII-B LP&quot;). L-A Holdings VII-B LP's general partner is Lubert-Adler Group VII-B Holdings, LLC (&quot;L-A Holdings VII-B LLC&quot;). Mr. Adler and Ira M. Lubert are members of L-A Holdings VII-B LLC. As a result, each of Mr. Adler, Mr. Lubert, L-A Holdings VII-B LLC, L-A Holdings VII-B LP, L-A Group VII-B LLC and L-A RE Fund VII-B may be deemed to share beneficial ownership of the reported shares.</footnote>
        <footnote id="F3">Mr. Adler expressly disclaims beneficial ownership of the reported shares except to the extent of his pecuniary interest therein. Mr. Adler will cease to share beneficial ownership of greater than 10% of the outstanding common stock upon completion of the initial public offering and will thereafter file reports solely in his capacity as a director of the company.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Dean S. Adler</signatureName>
        <signatureDate>2017-06-21</signatureDate>
    </ownerSignature>
</ownershipDocument>
