Data Center Construction in San Antonio, Texas

Before a data center shell goes up on the north or west side of San Antonio, someone has to find out whether the parcel sits on the Edwards Aquifer recharge, transition or contributing zone, because if it does, the state wants to review the plan first. That review can be the longest single item in the early schedule, and we build it into the preconstruction plan instead of discovering it in month four. We build secure halls, power yards and cooling plants for enterprise, aerospace and defense users across Bexar County, with environmental review treated as a design input.

The Texas Commission on Environmental Quality states that before building on the recharge, transition or contributing zones of the Edwards Aquifer a plan must be reviewed and approved by its Edwards Aquifer Protection Program under 30 TAC Chapter 213, and that technical review of an administratively complete application takes 90 days. Ninety days is a fixed quantity that needs a place on the calendar, with the application packaged correctly the first time.

The sections that follow explain the environmental, industrial and workforce context of the San Antonio market, and how we deliver within it.

An Edwards Aquifer plan covers the site's grading, stormwater controls, fuel and chemical storage, and sometimes the layout of the building and yard. For a data center, the fuel system and the cooling plant are of particular interest: tanks must have secondary containment, and water use and discharge need documentation. We prepare the plan with the civil engineer, including temporary construction controls, and we submit it only when it is administratively complete, since the 90-day technical review begins at that point.

Standard building permits follow, using the edition of the International Building Code and local amendments that the city has adopted under state law. Energy code and accessibility registration add their items. Our permitting and utility interconnection page describes how these tracks run in parallel with the utility process.

A September 19, 2025 KSAT report says Port San Antonio covers 1,900 acres on the city's West Side, provides nearly 18,000 jobs directly (83,766 including indirect employment) and brought $20 billion to the Texas economy the prior year, with aircraft maintenance operators among its tenants. Texas Public Radio reported on March 18, 2025 that the Port board approved more than $7 million to finish design of an innovation tower project aimed at aerospace and defense companies, and that the Port's existing space totals 10 million square feet at more than 97 percent occupancy.

On July 6, 2026, a vehicle manufacturer announced a $3.6 billion expansion of its San Antonio plant that adds a second assembly line, creates 2,000 jobs and adds 2.5 million square feet, which would make the plant twice its current size by 2030. These are very different sectors, but they share a need for secure, resilient computing. Government and defense operators need space that meets security rules, and manufacturers need control and engineering data close at hand.

A Port San Antonio page summarizing a November 2016 Texas Comptroller study describes the 1,900-acre campus as accessible by air, rail and truck, with an industrial airport at Kelly Field and an East Kelly Railport, and says that less than half of the acreage had been developed at that time. For a builder, a campus with air, rail and road access is a place where heavy equipment can arrive in more than one way.

The facilities we expect there are access-controlled enterprise halls, a network operations center and secure rooms inside existing hangars or offices. We also build an administration and security building at campus entrances. Defense-related work often has specific physical security and construction rules, and we review them with the owner's security officer before pricing.

With so much existing building stock, much San Antonio work is conversion. A hangar, a warehouse or an office floor can become a data hall if the structure, the electrical service and the cooling path can be arranged. We begin with a survey of the structure, a review of the electrical capacity and a look at the roof, then offer a conversion path with its cost. Our existing data center retrofit and expansion page covers live-room work in more detail.

Where a conversion is not practical, we propose a new building adjacent to the existing one. The two can share a generator yard and cooling plant, which reduces cost. This approach also leaves the existing operation undisturbed during construction, apart from tie-ins that we schedule for planned outages.

San Antonio sits where hard limestone and expansive clay both appear. A research report prepared with the state transportation department describes methods for calculating the potential vertical rise of expansive soils, including a TxDOT test based on plasticity index correlations. Parcels on limestone may need rock excavation, which affects trenching for duct banks and foundations, while parcels on clay need moisture conditioning or structural slabs.

We use borings to decide. A pad on rock may need blasting or hydraulic breaking, with the vibration limits and neighbor notices that come with it. A pad on clay may need lime treatment and a deeper moisture barrier. Each option is priced separately so the owner can see the difference between sites. Our mission-critical concrete slabs page explains how we treat the floor itself.

Beyond the defense sector, San Antonio has enterprise headquarters, health systems and a growing manufacturing base. Enterprise and financial institutions are the largest group of data center users in this part of the state, and real estate developers and site owners bring speculative opportunities along the interstates and near the airport.

We help developers test whether a site can support a data center before they commit to land. The test covers utility capacity, aquifer status, soils, fiber and zoning. Often one of those items eliminates a site early, which saves months for the buyer.

The aquifer review shapes the schedule. If the parcel is in a protected zone, we submit the application as early as possible and use the review period for design, procurement and utility coordination. No ground is broken until the approval arrives, but the long-lead equipment orders can be placed in parallel when the owner accepts the risk.

When the clock matters, we can use fast-track scheduling on parcels outside the protected zones, and we can compare it with a slower, protected-zone parcel. The comparison puts a number on what the aquifer review costs in months, so the owner can weigh it against land price and utility access.

Share the parcel, the load and the owner's security requirements. We will check the aquifer status, review utility options and return a plan. Nearby markets are covered on our Eagle Ford belt and Corpus Christi pages.

How do I know if my parcel is in the Edwards Aquifer zone?

The state environmental agency publishes maps of the recharge, transition and contributing zones, and a civil engineer can confirm a parcel. If it is in a zone, a plan must be approved before building. We check this in the first week of any San Antonio project.

How long does the aquifer review take?

The agency states that technical review of an administratively complete application takes 90 days. Completeness review comes first, so we plan for more than 90 days overall. We submit a complete package to avoid delay.

Can you convert a hangar or warehouse into a data hall?

Possibly, depending on the structure, electrical service and cooling path. We begin with a survey and a feasibility estimate. Where conversion is not practical, a new adjacent building may be better.

Do you build to defense security requirements?

We follow the physical security and construction rules the owner provides, including access control, vendor screening and documentation. We review them before pricing. Specific clearances and certifications depend on the owner's requirements.

What are the soil conditions?

They vary from limestone to expansive clay. Rock can raise excavation costs, and clay can require treatment or structural slabs. Borings tell us which applies to your parcel.