architect refusing to use materials we want in the house

This does seem unusual. While an architect can strongly advise against a particular material for design, durability or sustainability reasons, it is generally the client's decision unless there are planning, regulatory or contractual constraints involved. The key issue here may not be the laminate flooring itself, but whether the architect is refusing to provide the Stage 4 deliverables that were included in your appointment. If you have paid for a full construction package, it would be reasonable to ask why a change to a single material specification prevents the delivery of those documents. I would suggest reviewing your appointment agreement carefully and asking for a written explanation of: 1. Why laminate flooring cannot be included or noted as a client-selected alternative. 2. Whether the architect intends to withhold any Stage 4 deliverables that are part of the agreed scope. 3. How the proposed design-and-build route would affect the services already paid for. You may not be able to force the architect to endorse a material they fundamentally disagree with, but it is reasonable to expect clarity on the contractual implications and the deliverables you have already paid for.