San Antonio commercial construction cost per square foot, 2026 guide

The first thing we check on a San Antonio site is not the drawings. It is how far down the rock starts. North of Loop 1604 a trencher can hit limestone inches below grade, and that one fact moves the site work number more than any finish an owner will pick later. Cost per square foot in this market begins under the slab.

Rock, drainage and the cost of the ground

Much of the San Antonio area sits on limestone and, over the recharge zone, on karst that the city and the aquifer rules treat with real seriousness. Excavation that would be a day of digging in Houston clay becomes rock sawing and hammering here. Utility trenches cost more per foot. Drainage and detention design follow stricter rules over the recharge zone. A site on the south or east side may have none of these issues, which is why two lots of the same size in the same metro can carry very different site numbers before a wall goes up.

Building type and the systems nobody sees

A tilt-wall warehouse shell with a sealed slab and a few offices lands at the low end of any square-foot figure. A hotel, a medical office, or a restaurant with a full kitchen lands at the high end, because the building is mostly systems and finishes, not shell. A retail build-out inside an existing box sits in between and depends heavily on what the last tenant left behind. Before you ask what a square foot costs in San Antonio, decide what kind of square foot you are building.

Mechanical, electrical and plumbing scope is the part of a commercial budget that owners underestimate most, because none of it shows on a walkthrough. A restaurant hood, a medical suite's dedicated circuits, a hotel's plumbing risers and a warehouse's lighting and power for racking all live in that bucket. Add the exterior envelope for a stand-alone building, the fire sprinkler system on anything of size, and the site utilities discussed above, and the finishes an owner has been picturing may be a third of the number or less.

A planning range, with the label it deserves

Owners still need a starting point, so here is one, stated carefully. In our planning for San Antonio work, a warehouse shell has run from the low hundreds of dollars per square foot, retail and office build-outs in the low to middle hundreds, and hotels, restaurants and medical space from the middle hundreds up, all before land and soft costs. Treat that as a planning range only. It varies by scope, by site, by finish level and by the year the job bids, and it is not a quote for your building. The number that matters comes from your drawings.

Why 2026 is its own year

San Antonio has been growing along the Austin corridor and around the medical center and the bases for years, and the trade market reflects it. Skilled crews are booked, some material lead times remain long, and a few surrounding jurisdictions are reviewing more permits than their staffs were built for. A per-square-foot number from two years ago does not carry forward on its own. We reprice a budget close to the bid date because the market between planning and mobilization can move enough to matter.

What to send for a real number

A site survey, a geotechnical report if one exists, a program or concept plan, and a sense of the finish level you have in mind are enough for us to build a budget by trade. If you have a target opening date, send that too, because the schedule shapes the number: an aggressive date may mean overtime, an early buy of long-lead equipment, or crews we bring from our own shop rather than wait on a sub. We keep crews for concrete, excavation, framing, drywall, paint, tile and millwork, which gives us some control over both the price and the date on the trades that move most.

A principal of our company is on your San Antonio site, and the person who builds the budget is the person who runs the job through opening day. Send over what you have and we will return a number built from your scope, not from an average.