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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-09-01</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001825024</issuerCik>
        <issuerName>Offerpad Solutions Inc.</issuerName>
        <issuerTradingSymbol>OPAD</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001770593</rptOwnerCik>
            <rptOwnerName>Sella Roberto Marco</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O LL FUNDS, LLC, 2400 MARKET STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>PHILADELPHIA</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>19103</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-09-01</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>378106</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>378106</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Reflects shares of Class A common stock of the Issuer received on September 1, 2021, pursuant to that certain Agreement and Plan of Merger, dated as of March 17, 2021, by and among the Issuer, Orchids Merger Sub LLC (&quot;Merger Sub&quot;) and OfferPad, Inc. (&quot;Old Offerpad&quot;), Merger Sub merged with and into Old Offerpad with Old Offerpad surviving as a wholly owned subsidiary of the Issuer (the &quot;Merger&quot;). Upon consummation of the Merger (the &quot;Effective Time&quot;), each issued and outstanding share of common stock of Old Offerpad was automatically cancelled and converted into approximately 7.533 (the &quot;Exchange Ratio&quot;) shares of Class A common stock of the Issuer.</footnote>
    </footnotes>

    <remarks>Mr. Sella is the Managing Partner at LL Funds, LLC and is a member of the board of directors of the Issuer. Certain affiliates of LL Funds, LLC have filed a separate Form 3 reporting securities of the Issuer that they may be deemed to beneficially own. Mr. Sella disclaims beneficial ownership of any securities of the Issuer that may be deemed to be beneficially owned by affiliates of LL Funds, LLC.</remarks>

    <ownerSignature>
        <signatureName>/s/ Benjamin Aronovitch, as Attorney-in-fact for Roberto Sella</signatureName>
        <signatureDate>2021-09-03</signatureDate>
    </ownerSignature>
</ownershipDocument>
