Preconstruction and Estimating for Texas Data Centers

An estimate made before the electrical study is complete is a guess about the grid, and the grid is where most Texas data center budgets are won or lost. The cost of the building can be read from drawings. The cost and timing of getting power to it cannot, because they depend on a utility study, a queue position and equipment that is made to order. Preconstruction exists to turn those unknowns into a prioritized list the owner can act on.

Data Center Builders of Texas runs preconstruction as an engineering exercise with a price attached. We screen parcels, review geotechnical and survey data, build conceptual budgets from the electrical one-line, test alternatives for cooling and phasing, price long-lead equipment with current vendor quotes and keep a risk register that names who owns each item. The deliverable is a decision, not a document: which site, which design, which phase one.

We encourage owners to bring us in before the land is final. A day spent on a parcel visit and a flood map can eliminate a site that would have cost months, and an early look at the utility's position can show whether power will arrive in two years or six. Early involvement does not commit the owner to build with us; it commits us to give an honest number.

Our first pass looks at what can kill a site. Flood maps and drainage, soil and rock indicated by nearby borings, easements and rights-of-way, the distance to the substation and the transmission lines, fiber routes, zoning and any overlay districts. In the Permian Basin belt of West Texas, the Railroad Commission has suspended deep disposal well permits in seismic response areas, including a Gardendale area covering 33 deep disposal wells in the Midland-Odessa region after a magnitude 5.4 earthquake on December 16, 2022. That is regulatory action about oilfield injection, not data center siting, but it shows why a careful buyer reads the geologic and regulatory record of an area before assuming the ground is quiet.

The second pass looks at what the site needs. Heavy gear requires access roads and bridges that can take it, so we check the haul route. Cooling needs water, so we ask the utility. Fire service needs a hydrant and flow, so we ask the fire marshal. By the end we have a one-page screening memo for each parcel: what we found, what we do not know and what each unknown could cost.

We issue a conceptual budget from the one-line and a block plan, then refine it at each design milestone. Each version separates site work, shell, power, cooling, fit-out and owner-furnished gear, so the owner can see what moved. If a transformer lead time changes or a utility asks for a longer extension, the budget updates the same week.

We back every quantity with a source: a vendor quote, a unit price from a recent bid, a design drawing. When we assume, we say so, and we price the assumption as an allowance with a stated range. An allowance named as an allowance builds trust. An allowance buried in a lump sum is how an owner is surprised at buyout.

Electrical gear and cooling plant dominate the budget and the schedule, and their prices move with supply. Utility-side costs, including interconnection studies, extensions and substation work, come next. Large loads in ERCOT also face study fees and financial commitments under Senate Bill 6, which sets a $100,000 minimum study fee for initial transmission screening and requires large loads to show site control, so those costs belong in the owner's first-year plan.

Site conditions follow, as covered in our mass grading and site development work: rock, expansive clay, flood fill and dewatering all add cost. Then comes phasing, because building a campus in phases adds some cost (a second mobilization, a second commissioning) but saves capital and reduces risk of stranded capacity. We show the cost of each phasing option so the owner can pick one with open eyes.

Texas procurement and accessibility rules reach private projects at the edges. Projects with a total estimated cost of $50,000 or more must register construction documents with the Texas Department of Licensing and Regulation for accessibility review, so the design schedule has to include that step. For owners that sell to government, the Texas Comptroller's Statewide Procurement Division manages contract opportunities through the Electronic State Business Daily and the TxSmartBuy ordering system, and those buyers will have their own contract forms.

Local codes complicate the estimate. Because Texas lets each city adopt its own amendments by ordinance, two parcels in the same metro can fall under different requirements. We confirm the code editions during preconstruction and carry any local amendment as a line in the risk register until the building department confirms.

Real estate developers and site owners usually want to know whether a parcel is buildable and how much power it can credibly offer a tenant. Colocation and wholesale operators ask about phase sizes and the cost per unit of capacity. Utilities and power developers want a view of site work, civil quantities and schedule risk.

Operators with a design already in hand ask for a validation estimate. We review their drawings, compare them with market rates and tell them where we see risk. If the design is sound, we say so. If a line is thin, we say that too, and we show what we would carry in its place.

Send the target capacity, a short list of parcels or the one-line, and we will return a screening memo and a first budget. Many owners start here before they commit to design-build delivery or another contracting method.

How early should we bring in a builder?

As soon as you have a short list of parcels or a one-line, whichever comes first. Early input on site risk, power timing and phasing costs less than a redesign, and it gives the design team constraints they can use. There is no obligation to hire us to build.

What do you need to give a conceptual budget?

The target capacity in megawatts, the number and size of data halls, the cooling approach, the resilience level, the site location and any known constraints. If you lack some of these, we propose assumptions and show how the budget changes if they are wrong.

Can you price long-lead equipment without a purchase order?

We can provide budgetary pricing from current vendor quotes and show lead times, with the caveat that price holds and slots require a deposit. For firm pricing, the owner has to place an order. See our work on long-lead equipment procurement for how we plan those decisions.

How do you handle uncertainty in utility timing?

We carry timing as a range and show the schedule at the early and late ends. Where the owner can influence the outcome, for example by paying for an extension, we price the option. Where it cannot, we flag it on the risk register and recommend a contingency or a different phase.

Do you charge for preconstruction?

Scope and terms depend on the project. Some preconstruction services are fee-based and some are folded into a later construction agreement. We state the terms before work begins.