What Drives Commercial Construction Costs

Owners usually arrive with a number already in their head. It came from a website, a broker or a friend who built something two years ago. Sometimes it is close. More often it was built for a different building in a different year, and the job of pre-construction is to replace it with a number built from your scope.

Why one number cannot describe a building

Cost per square foot flattens everything that makes a building expensive or cheap into a single figure. A metal warehouse with a slab and a few restrooms and a dental clinic with a dozen operatories can be the same size and price several times apart. The figure is useful for a first sanity check and for nothing else. Do not put it in a pro forma without knowing what it assumed.

The levers that move the number

Finish level is the biggest lever. Polished concrete and painted drywall are one job. Stone, custom millwork, tile to the ceiling and specialty lighting are another, and those are exactly the trades where a builder's own crews matter most, because labor drives the price of finish work.

Mechanical, electrical and plumbing come next, and they are the part owners underestimate. Restaurants need hoods, grease interceptors and heavy gas and electrical service. Medical space needs medical gas, extra HVAC zones and plumbing at every chair. Hotels need a unit in every room. None of this shows in a rendering.

Site conditions set the price before the building starts. Poor soils, drainage, detention, utility extensions, demolition of what is there now and a tight urban lot with nowhere to stage materials all add cost that has nothing to do with the finished floor plan.

Structure and envelope matter more on ground-up work: steel versus wood, one story versus three, the amount of glass on the face of the building.

Working in an occupied building adds cost. Renovating a hotel that keeps renting rooms means night work, floor-by-floor phasing, dust control and guest protection. It is worth it when the property keeps earning, but it is not free.

Schedule is a lever too. A compressed schedule buys overtime and premium freight. A relaxed one lets crews sequence cleanly.

Finally, the year. Material and labor prices move, and a number from a job priced two years ago is a memory, not a budget.

Planning tiers by building type

Treat these as planning tiers only. They vary by scope, site, city and year, and your project can fall outside them.

Warehouse and shell space sit at the low end, because the finish is the structure. Gas stations and convenience stores add canopies, tanks and heavy site work to a modest building. Office and tenant interiors sit in the middle and climb with the density of walls, ceilings and technology. Retail and restaurant build-outs range widely, with the kitchen as the swing item. Hotel renovations and PIPs are priced per key and depend on how deep the brand's scope goes: soft goods only, or bathrooms, casegoods and corridors too. Medical and dental sit near the top for their size because of the systems behind the walls.

The costs outside the construction line

Design fees, permit and impact fees, surveys, testing, builder's risk insurance, financing costs and the owner's own contingency all belong in the total. FF&E is its own budget on hotels, apartments and restaurants, and it is often left out until it arrives on a truck. Put it in the number and put the install labor with it.

What we need to give you a real number

Drawings, or at least a written program and a finish level. A site walk, or a survey and photos. The opening date. With those, we price each trade that is really going to be on your site, many of them our own crews, and hand you a number that holds when the lender asks where it came from.

We are licensed and insured, with over 20 years of combined experience among the principals, and the principal who prices your job is on your site when it is built. Send the plans and we will send back a number and a date.