Half the tenants who tour a flex building want a front door and a back door, and the other half want to know if the back door can be a drive-in. That tension defines flex and light industrial space: a storefront or office face on one side, a shop or storage bay on the other, and enough flexibility in between that the next tenant can change their mind without tearing out walls.
Pre-engineered steel suits this better than most structures. The bays are small, the spans are modest, and the owner wants a repeating module with demising walls that can move. We build flex buildings for developers, small manufacturers, contractors, distributors and service companies across Oklahoma, and the same frame can serve a plumbing supply counter in one unit and a cabinet shop in the next.
The design decisions here are practical. How deep is each bay? How high is the clear height? How many overhead doors does a unit get? Does each unit have its own utilities and restroom? Answer those with a rent roll in mind and the building tends to lease. Answer them with an idea of the perfect tenant and it tends to sit.
Typical flex tenants are small fabricators, HVAC and electrical contractors, wholesalers, fleet-based service companies, e-commerce sellers, light assembly shops, craft producers and storage users. Their needs differ, but they share a few: roll-up doors at grade, reasonably high clear height, three-phase power on request, a small office, and parking for pickups and vans.
A group of units can mix uses, with a front row of office-showroom bays and a back row of deeper shop bays. Where the market includes heavier industry, we leave room for a tenant with a small crane or a spray booth. When a developer is unsure of the tenant mix, we choose the middle: 18 to 24 feet at the eave, a 30-foot module, and power and plumbing stubbed so a user can finish without rebuilding. See automotive and fleet owners for one tenant type that often drives the door count.
The base package is a rigid frame or a clear-span building with insulated roof and walls, a storefront of glass and aluminum or steel panel at the front, and overhead doors in the rear. Unit demising walls can be metal stud with gypsum board for fire separation, or a heavier assembly where the code requires it. Each unit gets its own electric meter, water service and sewer connection, with utilities sized for a typical light user.
From there, finishes depend on the strategy. A developer who wants to lease before finishing might stop at a slab, framed shell and rough utilities. A tenant-ready approach adds a restroom, an office suite, HVAC and lighting. We often build the shell first and finish units as leases sign, and our industrial office buildouts work is how those units get finished. For basic shell options, read commercial metal buildings.
Oklahoma has plenty of ground set aside for this. In Midwest City, Soldier Creek Industrial Park spans 40 acres, is owned by the city's utilities authority, and sits inside the city's only opportunity zone; the state commerce department recognized it as Site Ready in 2016, one of 19 light industrial parks in the state with that certification. In Bartlesville, 15 acres at the industrial park were transferred to the development authority in March 2025, split into three five-acre parcels, for a 20,000-square-foot speculative building with up to 80,000 square feet of industrial space possible.
Farther west, Elk City's Big Elk Industrial Park is 130 platted acres with sites from 6.6 to 35 acres, zoned I-3 heavy industry, next to the Farmrail line and less than 1.5 miles from I-40 ramps. In Woodward, a federal grant announced in 2020 supports a 124,000-square-foot industrial facility in the Woodward Industrial Airpark. See Midwest City, Bartlesville and Woodward for each local setting.
Our preferred approach for a flex project is to draw the full building and build in phases. Install the utility backbone and site drainage for the whole site, erect the first one or two modules, and add more as leases come in. The steel frame is easy to extend in bays, so long as the end wall is designed to be opened. Pre-engineered metal buildings allow that kind of staged growth with little rework.
That phasing also helps financing. A lender sees a smaller first draw and a clearer path to stabilization. We provide a unit-by-unit cost breakdown so an owner can see what each module adds, what the shared items cost, and where to adjust if the first lease is not signed. When the site allows, we leave room for a yard behind the building, since tenants with trucks and trailers pay more for it.
Flex space costs more per square foot than a bare storage building because of the finishes, the storefront and the extra utilities. The cost drivers are door count, restrooms, storefront glass, insulation, HVAC and the number of separate meters. Land and site work also matter, since a small building on a tight lot may need the same detention pond as a larger one.
We give budgets in two layers: shell and site, then tenant-ready finishes. That separates what is structural from what is a leasing decision. A cheaper shell with an expensive fit-out can be the wrong trade, and the opposite can be true too. For tenants who want more production space, our manufacturing plant page covers the heavier end of the same idea.
Rent roll and construction budget should be read together. Small units lease at higher rates per square foot but need more doors, restrooms and meters, while larger units lease for less and cost less to build. A developer who can mix both sizes on the same site often finds the best return, and we build the plan so the demising walls can move when a tenant outgrows a bay.
Give us the lot, the number of units you want and the kind of tenants you expect. We will come back with a shell budget, a phasing plan and a short list of choices that affect leasing.
Eighteen to twenty-four feet at the eave is common, since it fits shops and light storage. Go higher if tenants will rack goods or use cranes. Higher also adds cost in frame and wall area, so match it to the rent you can charge.
It can work in a park with proven demand and incentives for the first user. The risk is carrying cost while the building sits empty. Many owners build a smaller first phase and add bays when they sign. Our warehouse page covers the simpler version.
They separate units for fire and sound, and the code and the insurer decide the rating. We frame them with metal studs and board in most cases, and we plan them early so utilities do not run through the wrong wall.
Yes, if the wall girts and panels allow it and the slab has no obstructions. We can frame openings in advance for likely door locations, which is cheap compared to cutting them later.
Tell us about the site, the building and the schedule, and we will set up a review of scope, schedule and permitting.
See the services, building types and industries we plan and manage across Oklahoma.