(a) Any modification to an existing standard professional services contract requires the submission of an amendment for approval by all parties, as per the original contract, including, but not limited to:

1. (1) Changes in the project cost and scope of the project;
2. (2) Fee or hourly rate adjustment;
3. (3) Reimbursable expenses or additional services adjustments;
4. (4) Contract extension;
5. (5) Funding change (character code); and
6. (6) Additional subconsultants.

(b)

1. (1) The base fee in a standard professional services contract will normally remain constant for the duration of a project.
2. (2) However, if the funding or scope of the project changes significantly enough to reduce or increase the base fee allowed by the Building Authority Division standard fee schedule (see 22 CAR § 111-212), then the standard professional services contract shall be amended by both parties to reflect the new base fee agreement and submitted for approval.