[THIRD] AMENDMENT
                                     TO THE
                              DEL WEBB CORPORATION
                             SUPPLEMENTAL EXECUTIVE
                              RETIREMENT PLAN NO. 1


         The Del Webb Corporation  Supplemental  Executive Retirement Plan No. 1
(the  "Plan"),  which was  originally  effective as of January 1, 1989,  and was
restated  effective as of April 20, 1993, and was amended July 13, 1995 and June
26, 1996, is hereby further amended as follows:

         1.       Section  3.4(b)  of the  Plan  is  hereby  amended  to read as
follows:

                  3.4(b)  "Disability"  means that because of physical or mental
                  illness  or  disability,  with or without  accommodation,  the
                  Participant shall have been continuously unable to perform his
                  duties  under any  existing  employment  contract  between the
                  Participant   and  the  Company  or  in  accordance  with  the
                  Participant's current job description for a consecutive period
                  of 180 days.

         2.       The  first  paragraph  of  Section  4.3 of the Plan is  hereby
amended to read as follows:

                  EARLY  RETIREMENT.  If a  Participant  retires on or after his
                  Early  Retirement Date but before his Normal  Retirement Date,
                  the Employer shall pay the Participant  the Normal  Retirement
                  Benefit  under  4.2  accrued  to the  date of  termination  as
                  follows:

         3.       The first  paragraph  of Section  4.6(a) of the Plan is hereby
amended as follows:

                           (a) AMOUNT. In the event that, within thirty-six (36)
                  months  after  a  Change  in  Control  of  the  Employer,  the
                  Participant  terminates employment for Good Reason (as defined
                  in  Section  4.6(c)  of  the  Plan),   or  the   Participant's
                  employment with the Employer is terminated by the Employer for
                  reasons  other  than  death,  Disability,  Retirement,  or for
                  Cause,  the  Employer  shall pay the  Participant  the  Normal
                  Retirement Benefits under Section 4.2 as follows:

         4.       Section  4.6(c) (iii) of the Plan is hereby amended to read as
follows:
                  (iii) The  failure by the  Employer  to continue in effect any
                  thrift,  incentive or compensation plan, or any pension,  life
                  insurance, health and accident or

                  disability plan (including the Plan), in which the Participant
                  is  participating  at the time of a Change in  Control  of the
                  Employer (or plans providing  substantially similar benefits),
                  the taking of any action by the Employer which would adversely
                  affect  participation  in or materially  reduce benefits under
                  any of such plans or deprive the  Participant  of any material
                  fringe  benefit  enjoyed at the time of the Change in Control,
                  or the failure by the Employer to provide the Participant with
                  the number of paid  vacation days to which he is then entitled
                  on the  basis  of  years  of  service  with  the  Employer  in
                  accordance  with the  Employer's  normal  vacation  policy  in
                  effect on the date hereof;

         5.       Section  4.6(d)  of the Plan is  hereby  amended  by  deleting
         subparagraph (ii) therefrom and renaming  subparagraph (iii) thereof as
         subparagraph (ii).

         6. Section 8.1 of the Plan is hereby amended to read as follows:

                  8.1 RIGHT TO  TERMINATE  OR AMEND.  The Board may, in its sole
                  discretion,  terminate  the Plan at any  time.  The  Board may
                  amend the Plan at any time or from time to time. Any amendment
                  may provide  different  benefits  or amounts of benefits  from
                  those  herein  set  forth.  However,  no such  termination  or
                  amendment shall adversely  affect the benefits of Participants
                  which  have  accrued  prior to or as a result  of such  action
                  (including  termination  as described in Section 4.6(a) of the
                  Plan,  following  a Change in  Control),  the  benefits of any
                  Participant who has previously retired, or the benefits of any
                  Beneficiary of a Participant who has previously died.

         7. Section 9.6 of the Plan is hereby amended as follows:

                  This Agreement shall be governed by and construed and enforced
                  in accordance with the laws of the State of Delaware.

         Except as otherwise  provided  above,  the  provisions  of the Plan, as
amended herein, shall continue in full force and effect.

                                            DEL WEBB CORPORATION



                                            By:/s/ Robertson C. Jones
                                               ---------------------------------
                                            Its: Senior Vice President
                                               ---------------------------------
                                            Dated: March 10, 1999
                                                   -----------------------------