4.  ARCHITECTURAL ENHANCEMENTS

4.1.  If the provisions of paragraph 3.9.3 and 3.9.4 of schedule 26 (Planning) apply, the Architectural Enhancement shall stand as an Authority Notice of Change and, save as provided in paragraph 4.2 below, the principles set out in this Part 6 of Schedule 21 (Change Protocol) applying to the Contractor's Estimate shall apply to the estimates and evidence required of the Contractor.

4.2.  Paragraph 3 above shall not apply to Architectural Enhancements and the Authority shall be entitled to take the action in paragraph 3.9.5 of Schedule 26 (Planning) and the consequences that flow therein.