Construction for Colocation and Wholesale Data Center Operators in Oklahoma

Up to four facilities and close to 1.2 million square feet, spread across several phases and a $3 billion headline: that is how one north Tulsa County campus was described when it was announced in October 2025, with first-phase completion scheduled for summer 2027. The announcement is useful to a wholesale operator because it shows the shape of the deal. Nobody is pouring four buildings at once. The developer builds a shell, a power block and a yard, finds a tenant, and then builds the next one.

We build for the operators who work that way: wholesale landlords, retail colocation companies, and the developers who stand up powered shells for them. Our buyers are rarely asking whether a building can be built. They are asking how much of it should be built before a lease is signed, how the second phase will connect to the first without a shutdown, and what a tenant's engineer will see when they walk the generator yard.

The sections below set out how we handle those questions in Oklahoma, where land is cheaper than in the coastal markets and the limiting resource is usually the utility's willingness to deliver megawatts on a date.

The central decision on a colocation project is speculative scope. A bare shell with the utility feed, the cooling plant pads and the first generator block in place lets a tenant move in quickly, but every tenant has a different density and redundancy target. We usually advise building the long-life infrastructure for the whole campus, meaning the substation yard, duct banks, stormwater and the main roads, while keeping the data hall fit-out in tenant-sized blocks.

That split also protects the operator's cash. Concrete and underground work are cheap to install before a campus is occupied and costly to retrofit afterward, because trenching beside live halls demands exclusion zones and vibration monitoring. Owners who want a closer look at the building form can read about the colocation data center building type.

Our scope on a wholesale shell normally stops at a defined demarcation: the structure and envelope, the slab, the roof, the electrical room shells, the generator and cooling yards, site utilities, security perimeter and the paved court. Tenant-specific work, including cage partitions, rack power distribution, containment and the white-space controls, is delivered in a separate fit-out contract, either by us through a data hall fit-out package or by the tenant's own contractor.

We write the demarcation in plain language into the preconstruction scope so both sides know who owns the last foot of conduit and the last point of structural load. Where a tenant wants higher density than the base building was drawn for, we flag early whether the slab, the roof framing and the cooling pad can take it. Our work on colocation data center construction is organized around that handoff line.

A powered shell budget is front-loaded. Site development, utility work and the first generator and cooling blocks usually take a larger share than the building envelope. Owners compare Oklahoma sites by land price, but the real comparison is how much of that infrastructure the site already has. Soldier Creek Industrial Park in Midwest City, for instance, carries the Oklahoma Department of Commerce Site Ready certification, one of 19 light industrial parks in the state with that status, which trims diligence time before design begins.

Weather and ground conditions add a second set of line items. Rain that falls on a few hundred thousand square feet of roof and paving needs detention volume, and tornado-rated construction affects the structural framing and door and louver schedules. We carry these as named allowances so a lender or investment committee can read them. Because wholesale operators are often financing with debt, we also provide draw schedules that track completed work, not just billed work.

Oklahoma City and Tulsa are the established metros, and both have interstate access, because three interstates, I-35, I-40 and I-44, meet in the state, and the state reports more than 2,600 miles of Class I rail operated by BNSF, Union Pacific and CPKC. Colocation tenants care about that mostly for equipment delivery and fiber routes. Beyond the metros, a June 2025 Oklahoma Department of Commerce release described a Chickasha industrial park project built around on-site power for sectors such as data centers, which makes Chickasha a place to watch for powered land.

In Enid, a developer proposed four data center campuses in September 2026 with up to $35 billion of estimated capital investment, but rezoning had been filed for only two sites and the city had not approved them. We treat that as a signal of interest, not a certainty, and we advise operators to read it the same way. Our page on building in Enid covers the local conditions.

On a phased campus the same trade partners return for every phase, so managing earthwork, concrete and site utilities under one team keeps quality and schedule consistent. We coordinate the slabs and equipment pads, the underground duct banks and the paving that ties phases together. When a second building is poured next to an energized first one, the same supervisor knows where the live ducts are because they were installed under the same supervision.

That matters most at the interface between phases. A wholesale campus needs spare conduit stubbed out for the next building, a storm sewer sized for the final buildout, and a perimeter that can be extended without moving the fence line twice. We detail these interfaces in the first phase and leave them capped and documented, using electrical duct banks and service entrances that the next phase can tap without opening live systems.

Owners who start with a shell tend to add three services quickly: cooling plant pads, generator yards and commissioning coordination. Each is delivered as a package that a tenant can inspect and sign off. A tenant's engineers will ask how the generators are fueled, how long the fuel supply lasts and how the yard drains, and we answer with drawings, not promises.

Operators who also sell to hyperscale customers on the same campus should read how we work with hyperscale cloud providers, since the build standards and approval cycles differ. And when the campus is on land owned by a separate developer, the commercial structure of the ground lease and the site plan is discussed in our page for real estate developers and site owners.

Share the parcel, the target density and the lease timeline. We will propose a shell scope, a demarcation line for tenant fit-out and a phase plan that keeps the underground work ahead of the buildings.

How many phases should a colocation campus be planned in?

There is no fixed number, but we have seen plans that run to four buildings on a single parcel. We plan the infrastructure for the full buildout and the data halls for the first tenant block, then update the plan as leases are signed. The cost of oversizing the underground work is usually less than the cost of reopening it later.

Can a building be built before the tenant is known?

Yes, as a powered shell. We stop at the base building, keep slab loads and roof framing conservative, and stub out utilities so a tenant can choose density and redundancy later. Tenants with high-density needs may still request structural reinforcement, which we price separately.

How do you keep construction away from energized halls on later phases?

We separate access roads, laydown and haul routes from the first building, set up exclusion zones and vibration monitoring, and avoid trenching near live duct banks. Where crossing is unavoidable, we schedule it with the tenant's operations team and use hand excavation near known utilities.

Which Oklahoma code editions will govern a wholesale shell?

That depends on the city or county. The state has adopted newer International Codes, but cities adopt their own editions, and several still list earlier editions. We confirm the edition in writing before submission and carry it through the drawings.

What do tenants usually ask to see at turnover?

They ask for as-built drawings, test and balance reports, generator and switchgear test records, and the commissioning log. We organize the closeout binder from the first month so those documents grow with the work.