Cost-per-square-foot pricing sounds like a shortcut. In practice, it's a way to guarantee that your budget is wrong.
MEP trades, framers, and concrete contractors need to see wall lengths, unit separations, and slab layouts to price accurately. A SF number gives them nothing to work with.
Why Cost-Per-SF Is a Developer Trap
Cost-per-square-foot estimates are seductive because they're fast. You know the building size, you apply a regional cost rate, you have a number. The problem is that cost-per-SF is an average — and your specific building is not average.
A 10,000 SF flex-space building with 8 units and extensive demising walls costs significantly more per SF to build than a 10,000 SF open-bay warehouse with one roll-up door. Same square footage. Completely different scope. The cost-per-SF estimate doesn't know the difference. Your framer and MEP contractors definitely do.
When they see a building footprint without unit counts, wall layouts, and slab details, they price for the more expensive scenario. Every time.
What the PCBS Building Assumptions Provide
The building assumptions component of the Pre-Construction Budget Set gives your construction team:
Unit layout and demising wall locations — the primary driver of framing cost and MEP complexity
Exterior wall lengths by elevation — allowing framers to estimate material and labor with real takeoff data
Slab area and thickness assumptions — with loadbearing assumptions documented for structural pricing
Storefront and opening locations — affecting both framing and glazing scope
Mechanical space and equipment pad locations — identified early to prevent coordination conflicts
This moves your building from a footprint on a page to a scope document that trades can actually price.
The Financial Safeguard
Replacing cost-per-SF assumptions with measured wall lengths and unit layouts reduces MEP and framing contingencies significantly — and gives you the basis for real negotiations with your construction team.
The Scope Is What Gets Built. Price the Scope.
The building assumptions in the PCBS aren't construction drawings. They're enough definition to move from rough estimates to legitimate pricing — at a fraction of the cost of full engineering.
If you're asking contractors to price your building from a footprint and a square footage, you're asking them to guess. And you already know what happens when contractors guess.
Get real pricing on your building scope. Start your project review.
