<SEC-DOCUMENT>0000906163-19-000049.txt : 20190312
<SEC-HEADER>0000906163-19-000049.hdr.sgml : 20190312
<ACCEPTANCE-DATETIME>20190312171953
ACCESSION NUMBER:		0000906163-19-000049
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20190311
FILED AS OF DATE:		20190312
DATE AS OF CHANGE:		20190312

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Ross Susan Williamson
		CENTRAL INDEX KEY:			0001681036

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12378
		FILM NUMBER:		19675975

	MAIL ADDRESS:	
		STREET 1:		11700 PLAZA AMERICA DR, SUITE 500
		CITY:			RESTON
		STATE:			VA
		ZIP:			20190

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NVR INC
		CENTRAL INDEX KEY:			0000906163
		STANDARD INDUSTRIAL CLASSIFICATION:	OPERATIVE BUILDERS [1531]
		IRS NUMBER:				541394360
		STATE OF INCORPORATION:			VA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		11700 PLAZA AMERICA DR.
		STREET 2:		SUITE 500
		CITY:			RESTON
		STATE:			VA
		ZIP:			20190
		BUSINESS PHONE:		7039564000

	MAIL ADDRESS:	
		STREET 1:		11700 PLAZA AMERICA DR.
		STREET 2:		SUITE 500
		CITY:			RESTON
		STATE:			VA
		ZIP:			20190
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_155242557518477.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2019-03-11</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000906163</issuerCik>
        <issuerName>NVR INC</issuerName>
        <issuerTradingSymbol>NVR</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001681036</rptOwnerCik>
            <rptOwnerName>Ross Susan Williamson</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>11700 PLAZA AMERICA DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 500</rptOwnerStreet2>
            <rptOwnerCity>RESTON</rptOwnerCity>
            <rptOwnerState>VA</rptOwnerState>
            <rptOwnerZipCode>20190</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable></nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>1700.0</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2019-03-11</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>1179</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2026-07-27</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>1179.0</value>
                    <footnoteId id="F2"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1179</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Stock options were granted under the 2014 Equity Incentive Plan and vest in 25% increments on 12/31/18, 12/31/19, 12/31/20 and 12/31/21.</footnote>
        <footnote id="F2">Stock options were granted on July 28, 2016 under the NVR, Inc. 2014 Equity Incentive Plan and are subject to the achievement of a performance metric based on the Company's return on capital performance during the three-year period from 2016 through 2018. Effective March 11, 2019, it was determined by the Compensation Committee of the Board of Directors that the Company had achieved the required return on capital performance metric for the three-year performance period. Vesting for these stock options is now solely contingent upon the director's continued service.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Matthew B. Kelpy, Attorney-in-fact for Susan Williamson Ross</signatureName>
        <signatureDate>2019-03-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
