Two billion dollars of office, retail and residential space at a single Plano address is how Legacy West is described, with a 100 acre corporate headquarters campus inside it, and projects like that set the expectation for every office building built in the shadow of the tollways. Tenants and lenders want the garage to work on day one, the plaza to drain, the lobby floor to be flat enough for stone and the tower core to be plumb. None of that comes from the curtain wall. It comes from what was done below grade and on the first two floors.
We build the concrete, utility and earthwork side of office work for general contractors and developers across Texas: footings and drilled piers, mat and grade-beam foundations, slab on grade at the lobby and ground floor, elevated decks, site paving and the water, sewer, storm and electrical lines that reach the building. Office is a building type where finish quality and schedule matter in equal measure, and where Texas soil can quietly undermine both.
Codes, energy rules and accessibility review
Office plans in Dallas are reviewed against the International Building Code with Dallas amendments, along with the energy and fire codes and the National Electrical Code, according to the city’s published code page. Elsewhere in the state the rule is different, because state law fixes the International Building Code as the baseline for municipal commercial work and then lets each city amend it by ordinance. So the same office design can face different reviewers in Plano, Austin and San Antonio, and we ask early which edition and which local amendments the permit office is using.
The state energy office continues to use the International Energy Conservation Code, which affects slab edge insulation and vapor retarder details that we install. And any office project with an estimated cost of $50,000 or more must be registered with the Texas Department of Licensing and Regulation for Texas Accessibility Standards review, which is why ADA ramps and accessible routes from the street and the garage into the lobby are drawn and checked before we form them.
Ground conditions behind the lobby
In Dallas County the Austin Chalk escarpment rises about 230 feet and runs north to south, which is a reminder that the ground under an office site can change from stiff clay to rock-like chalk within a few blocks. A building on clay needs drilled pier foundations or a stiffened mat sized for swell, while a building on chalk may need very different excavation and shoring. We read the boring logs for both conditions before we price, and we flag any site where the logs and the grading plan disagree.
Tall buildings also mean deep excavations next to property lines and live streets. We plan haul routes, dewatering and staging in tight urban blocks the way a downtown job demands, and we coordinate utility potholing and locating before we dig so existing lines are found by hand rather than by a bucket.
Structure, decks and finish floors
Mid-rise and high-rise offices in Texas lean on cast-in-place concrete: flat plate or post-tensioned floors over a podium garage, with a stiff core carrying lateral load. We approach those as post-tensioned slab and elevated deck work, where stressing sequence, rebar congestion at columns and shoring removal times are all tied to the schedule. A concrete floor stressed too early or stripped too soon will deflect, and the ceiling and glass crews inherit it.
The lobby and amenity floors get their own care. Whether the owner wants a ground and sealed finish or a substrate for stone and tile, we coordinate moisture testing, flatness and curing so the floor installer does not reject the slab. For a tenant-facing space we can discuss polished concrete floors directly with the architect rather than leaving it to a late change order.
Office as part of a larger district
Few offices stand alone. The Las Colinas community in Irving covers more than 12,000 acres of planned mixed-use development, with a rail line running through it to the airport, and the same pattern repeats at Port San Antonio, where the board approved design funds for an Innovation Tower office project while the campus carries roughly 10 million square feet at more than 97 percent occupancy. That kind of district means an office tower, its garage, a plaza and a street grid are all in the same pour calendar.
We often build the neighbors alongside, such as the parking structure that serves a tower or the multifamily and mixed-use blocks wrapped around it. Having one concrete and utility team across those pieces keeps the shared storm and sewer backbone from being designed three times.
What changes the price of an office shell
The big levers are foundation type, floor system and site tightness. A deep pier foundation costs more than a spread footing, a post-tensioned deck costs differently from a flat plate with conventional rebar, and a downtown lot with no laydown area adds trucking and crane time that a suburban campus does not. Ready-mix delivery in congested traffic is a real line item, because a mix that spends too long in the drum changes character before it reaches the pump.
We show owners those drivers openly. If the geotechnical report supports a shallower foundation, we say so. If a utility relocation will hold the excavation start, we price it now rather than inviting a change order later. Our work with commercial developers is built around that kind of early, specific pricing.
Building an office in Texas?
Share your plans, boring logs and target dates and we will return a concrete, utility and earthwork scope with the soil and permit risks spelled out. We also work with general contractors and CM firms that want a single concrete partner from site prep to roof deck.
Common Questions
Post-tensioned or conventionally reinforced floors for an office?
Post-tensioned floors generally allow thinner slabs and longer spans, which saves floor height and sometimes total concrete volume, but they demand a careful stressing sequence and protection from later penetrations. Conventional rebar is more forgiving of tenant changes. The structural engineer chooses, and we give pricing and schedule feedback on both options before the design is locked.
Why do two Texas cities review the same office differently?
Because state law sets the International Building Code as the baseline for municipal commercial work, but each city may adopt local amendments and newer editions of some codes by ordinance. Dallas, for example, publishes editions with its own amendments. We confirm the governing edition with the reviewing office before we price anything.
How early should we involve a concrete contractor?
Before the foundation type is locked, if possible. Pier lengths, mat thickness, shoring and utility depths all depend on the ground, and a contractor who has read the boring logs can point out where a design is more expensive than it needs to be. Early input also helps with phased pours and crane access.
Do you handle the site utilities and paving as well?
Yes. We install water, sanitary, storm and electrical duct to the building, then pave the drive aisles, plaza and accessible routes. Doing both lets us stage trenching before slabs go down and keeps the final site grading consistent with the building floor elevations.
What hurts an office slab schedule most?
Wet ground, late embeds and unplanned utility conflicts. A slab cannot be poured over soft subgrade or unflagged conduit, and a rain delay on one floor cascades to the stressing and shoring cycle above it. We keep a pour calendar with weather contingency and push for embed and sleeve coordination early.