POWER OF ATTORNEY

Know all by these presents, that the undersigned hereby
constitutes and appoints each Daniel D. Malzahn and Matthew B. Kelpy,
singly and not jointly, the undersigned's true and lawful
attorney-in-fact to:

1) execute for and on behalf of the undersigned, in the
undersigned's capacity as an executive officer of NVR, Inc.,
Form 144 pursuant to Rule 144 under the Securities Act of 1933 and
Forms 3, 4 and 5 in accordance with Section 16(a) of the Securities
Exchange Act of 1934 and the rules thereunder;

2) do and perform any and all acts for and on behalf of the
undersigned which may be necessary or desirable to complete and execute
any such Form 144, 3, 4 or 5, complete and execute any amendment(s)
thereto, and timely file such form with the United States Securities and
Exchange Commission and any stock exchange or similar authority; and

3) take any other action of any type whatsoever in connection with
the foregoing which, in the opinion of such attorney-in-fact, may be of
benefit to, in the best interest of, or legally required by, the undersigned.

The undersigned hereby grants to each such attorney-in-fact full power and
authority to do and perform any and every act and thing whatsoever
requisite, necessary and proper to be done in the exercise of any of the
rights and powers herein granted, as fully to all intents and purposes as
the undersigned might or could do if personally present, with full power
of substitution or revocation, hereby ratifying and confirming all that
such attorney-in-fact shall lawfully do or cause to be done by virtue of
this power of attorney and the rights and powers herein granted. The
undersigned acknowledges that the foregoing attorneys-in-fact, in serving
in such capacity at the request of the undersigned, are not assuming any
of the undersigned's responsibilities to comply with Rule 144 of the
Securities Act of 1933 and Section 16 of the Securities Exchange Act of 1934.

This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 144, 3, 4, and 5 with
respect to the undersigned's holdings of and transactions in securities
issued by the Company, unless earlier revoked by the undersigned in a
signed writing delivered to the foregoing attorneys-in-fact.

IN WITNESS WHEREOF, the undersigned has caused this Power of
Attorney to be executed as of this 12th day of December, 2018.

/s/ David A. Preiser
Signature

David A. Preiser
Print Name