Exhibit 5 JOINT FILING AGREEMENT The undersigned, being duly authorized thereunto, hereby execute this agreement for inclusion as an exhibit to a Schedule 13D with respect to the Class A Common Stock, par value $.01 per share, of CBRE Holding, Inc. to...

                                                                       Exhibit 5

                            JOINT FILING AGREEMENT

The undersigned, being duly authorized thereunto, hereby execute this agreement
for inclusion as an exhibit to a Schedule 13D with respect to the Class A Common
Stock, par value $.01 per share, of CBRE Holding, Inc. to evidence the agreement
of the below-named parties, in accordance with the rules promulgated pursuant to
the Securities Exchange Act of 1934, to file such Schedule 13D, and any
amendments or supplements thereto, jointly on behalf of each such party.

Dated: July 30, 2001

RCBA GP, L.L.C.                               RCBA STRATEGIC PARTNERS, L.P.

                                              By:  RCBA GP, L.L.C.
                                                   its general partner

By:  /s/ Xxxxxx X. Xxxxxx                     By:  /s/ Xxxxxx X. Xxxxxx
     ---------------------------                   ---------------------------
     Xxxxxx X. Xxxxxx                              Xxxxxx X. Xxxxxx
     Member                                        Member

XXXX STRATEGIC XX XX, L.L.C.                  XXXX STRATEGIC PARTNERS II, L.P.

                                              By:  Xxxx Strategic XX XX, L.L.C.
                                                   its general partner

By:  /s/ Xxxxxx X. Xxxxxx                     By:  /s/ Xxxxxx X. Xxxxxx
     ---------------------------                   ---------------------------
     Xxxxxx X. Xxxxxx, Member                      Xxxxxx X. Xxxxxx, Member

     /s/ Xxxxxx X. Xxxxxx
     ---------------------------
     XXXXXXX X. XXXX

By:  Xxxxxx X. Xxxxxx, Attorney-in-Fact