Price today first, then the confirmed change
The temptation is to write one scope covering the eventual arrangement and start paying for it now. That is expensive, and it is also risky, because plans for a site change often shift by months. A better structure prices the present layout as stage one and treats each confirmed change as a defined addition with its own start trigger. Everyone knows what is being bought and when the cost moves.
Confirmed means something specific: a fitout with a date, a lease signed, an area handed over. A conversation about possibly expanding the mezzanine is not a stage, it is an assumption. Keep those in a separate paragraph headed assumptions, so the bidder can see the likely direction without pricing it. That distinction keeps the quote honest and makes later variations easy to justify. Bidders respond well to that separation, because it lets them price a defined job rather than hedge against an undefined one.
