We are under contract on an Option A for a design and build and recently submitted our design to the client. We have submitted our design as per clause 21.2 and the design complies with the WI and all applicable law
The client wants to make changes however there changes are not changes to the WI. Making the client recommended changes may save us (the contractor) on material costs. The client has then said they want the money back as a negative CE for the savings.
To me this does not seem right as (a) the WI has not changed and (b) we will now be expending more design hours due to making these small changes.
Does the Client have a right to change design and request we give money back?