How a guaranteed maximum price actually holds.
A GMP is a promise about a number that has not been spent yet. Whether it holds comes down to how honestly the job is forecast in the first third, while there is still schedule left to absorb what you find.
Most budgets do not fail at the end. They fail quietly around the middle, and the failure is visible months earlier to anyone rebuilding the forecast from what subcontractors have actually billed and actually installed. Those are two different numbers and the distance between them is the earliest honest signal a project gives you.
Forecast from actuals, not from the schedule of values
A trade billing forty percent against work that is twenty-eight percent installed is not a billing dispute, it is a productivity problem that will land on the schedule. We rebuild the cost to complete every month from subcontractor billings against installed quantities from the inspection walk, and that gap gets its own line in the report rather than being netted into a percentage.
Contingency is a budget, so it gets managed like one
Design contingency exists to absorb what the drawings did not anticipate, and the discipline is reporting what has been drawn against it every month rather than discovering the balance at the end. Unforeseen site conditions in the first excavation are the most common early draw on a podium job, and finding out in month two leaves room to buy the savings back.
Buyout savings are where the money comes back
The gap between the budgeted number and the bought number is real money, and on most projects it is the only source of relief against change orders. It shows up in the middle third, once the large trade packages close, which is why exposure on a well-run job usually peaks and then falls rather than climbing to the end.
Float belongs to the project, not to a trade
When float lives inside individual trade durations it gets consumed invisibly and nobody can tell you how much is left. Held at the project level and released by the schedule, it becomes a number you can report: days remaining, alongside the dollars. Weather and inspection delays then draw against something everyone can see.
What we will not do
We will not quote you a schedule or a cost per square foot before we have your drawings and a scope sheet. Numbers given that early are guesses dressed as commitments, and the whole point of the discipline above is that a number should mean something when it is said.