U.S. SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549

                                   FORM 12b-25

                             SEC File No. 333-41636
                                 CUSIP No. None

                           NOTIFICATION OF LATE FILING

      [ ] Form 10-K and 10 KSB                        [ ] Form 11-K
      [X] Form 10-Q and Form 10-QSB                   [ ] Form N-SAR

                       For the Period Ended March 31, 2001

     Nothing in this Form shall be  construed to imply that the  Commission  has
verified any information contained herein.

PART I.  Registration Information

                              COR Development, LLC
                            (Full Name of Registrant)

    13720 Roe, Leawood, Kansas                                66224
(Address of Principal Executive Office)                     (Zip Code)

PART II. Rules 12b-25(b) and (c)

   If the  subject  report  could not be filed  without  unreasonable  effort or
expense  and  the  registrant  seeks  relief  pursuant  to Rule  12b-25(b),  the
following should be completed. (Check box if appropriate.)

[ ]  (a)  The reasons  described in  reasonable  detail in Part III of this Form
          could not be eliminated without reasonable effort or expense;

[X]  (b)  The subject annual report,  semi-annual  report,  transition report on
          Form 10-K, Form 20-F, 11-K or Form N-SAR, or portions thereof, will be
          filed on or before the fifteenth calendar day following the prescribed
          due date; or the subject quarterly report of transition report or Form
          10-Q, or portion thereof will be filed on or before the fifth calendar
          day following the prescribed due date; and

[ ]  (c)  The   accountant's   statement  or  other  exhibit  required  by  Rule
          12b-25(c)has been attached if applicable.

PART III. Narrative

   COR Development,  LLC (the "Registrant")  cannot file the Form 10-QSB because
it has not obtained the  compilation  of  information on the sales of its common
units and preferred units to investors to be reported in the Form 10-QSB and the
compilation of unaudited financial information to be reported in the Form 10-QSB
with the  accountant's  permission.  The foregoing  reasons for the Registrant's
inability to file timely cannot be eliminated without unreasonable effort or the
incurrence of unreasonable expense.



PART IV.  Other Information

   (1) Name and  telephone  number  of  person  to  contact  in  regard  to this
notification:

   Arthur E. Fillmore, II             816                    460-7317
         (Name)                   (Area Code)            (Telephone Number)

   (2) Have all other periodic reports required under Section 13 or 15(d) of the
Securities  Exchange Act of 1934 or Section 30 of the Investment  Company Act of
1940  during  the  preceding  12  months  or for such  shorter  period  that the
registrant was required to file such report(s) been filed?  If the answer is no,
identify report(s).

        YES [X]    NO [ ]

   (3) Is it anticipated  that any  significant  change in results of operations
from the corresponding  period for the last fiscal year will be reflected by the
earnings statements to be included in the subject report or portion thereof?

        YES [ ]    NO [X]

                              COR Development, LLC
                  (Name of registrant as specified in charter)

has  caused  this  notification  to be signed on its  behalf by the  undersigned
thereunto duly authorized.

Date:  May 15, 2001

                                         COR DEVELOPMENT, LLC


                                         By: /s/ Robert M. Adams
                                                 Robert M. Adams
                                                 Manager