Guides / Commercial and industrial
Shell versus turnkey
Every metal building conversation eventually splits into these two. A shell is a building you can lock. Turnkey is a building you can occupy. The gap between them is bigger than most people plan for.
Last updated: September 2026
What a shell is
- Engineered slab and foundation.
- Red iron frame, roof panels, wall panels.
- Overhead doors, walk doors, windows.
- Erection, permits, basic site grading.
- Gutters, downspouts and flashing.
When a shell is done the building is dried in, weather tight and lockable. It has no insulation, no heating or cooling, no electrical past a service, no plumbing and no interior walls. It is a very large empty box with a good roof on it.
Shell pricing by size
| Building size | Per SF |
|---|---|
| 1,500 - 2,999 SF | $52 - $68 |
| 3,000 - 4,999 SF | $46 - $58 |
| 5,000 - 9,999 SF | $38 - $50 |
| 10,000 - 19,999 SF | $32 - $42 |
| 20,000 SF and up | $27 - $36 |
What turnkey adds
- Insulation, spec'd to how the space gets used.
- HVAC, sized to the insulation and the occupancy.
- Electrical distribution, lighting and devices.
- Plumbing, restrooms, water heater, fixtures.
- Interior framing, drywall, doors and trim.
- Flooring, paint, ceilings and final finishes.
- Fire protection where occupancy requires it.
At the end of turnkey you have a building that can pass a final inspection and get a certificate of occupancy. That last phrase is the whole difference, because a shell cannot be legally occupied for most uses.
Turnkey pricing by size and use
| Building size | Warehouse, light industrial | Retail, office, flex |
|---|---|---|
| 1,500 - 2,999 SF | $98 - $125 | $125 - $165 |
| 3,000 - 4,999 SF | $88 - $112 | $112 - $148 |
| 5,000 - 9,999 SF | $78 - $100 | $100 - $132 |
| 10,000 - 19,999 SF | $68 - $88 | $88 - $118 |
| 20,000 SF and up | $60 - $78 | $78 - $102 |
What the gap actually costs
On a 10,000 square foot warehouse, the shell runs $320K to $420K. Turnkey for warehouse use runs $680K to $880K. The interior roughly doubles the building.
For retail, office or flex on the same footprint, turnkey runs $880K to $1.18M, because finished space carries more mechanical, more electrical, more drywall and a higher finish standard than a warehouse does.
If you budget the shell and plan to finish it later, budget the finish now too. It is the larger of the two numbers.
When a shell is the right call
- You are a developer delivering cold dark shell space and the tenant does their own finish-out.
- You have trades of your own and a real project manager, not a plan to figure it out.
- The use genuinely does not need conditioned space. Unconditioned equipment storage, covered work area, hay and machinery.
- You are phasing on purpose, with the money for phase two identified.
Shell first is a legitimate strategy. It gets a building on the ground, it gets the expensive weather-dependent work done, and it can convert a lease payment into equity while you finish at your own pace.
When shell first goes wrong
It goes wrong when the plan for phase two is optimism. A shell sitting unfinished for two years is a building you are paying taxes and insurance on that produces nothing. Interest rates move. Trade pricing moves. The finish costs more in year three than it would have in year one.
It also goes wrong when the shell was not designed for the finish. Sleeves for plumbing, in-slab conduit, mechanical support points, wall bracing for a mezzanine, service size for the eventual load. All of that is cheap to build in and expensive to add later. If you know the finish is coming, design for it in the shell.
Cutting a trench through a finished slab to run a drain line costs more than the sleeve would have. It always does.
Barndominiums
The same split applies to homes. A dried-in barndominium shell runs $62 - $78 per square foot. Finished runs $118 - $225 per square foot depending on finish level. The interior is most of the house.
Barndominium cost by finish level
| Finish level | What it is | Per SF |
|---|---|---|
| Shell, dried in | Slab, frame, roof, wall panels, windows, exterior doors. No interior. | $62 - $78 |
| Basic finish | Spray foam, HVAC, standard cabinets, LVP flooring, builder-grade fixtures. | $118 - $138 |
| Mid finish | Quality cabinets, mixed flooring, upgraded fixtures and trim. | $145 - $172 |
| High finish | Custom cabinets, stone counters, premium fixtures, custom features. | $185 - $225 |
Under 2,500 SF, add 10 percent. Fixed costs do not shrink with the house. Attached shop or garage space runs $48 - $62 per SF.
Finishing a house yourself is a real path and people do it well. It is also two years of weekends, and it requires you to coordinate a plumber, an electrician, an HVAC contractor, a drywall crew, a flooring crew and a cabinet shop without any of them waiting on each other. That is a job. Know that going in.
Financing complicates it further. Most construction lenders fund against a finished appraised value. A shell they cannot occupy is harder collateral, and some lenders will not fund a partial build at all.
The honest comparison
- Shell is cheaper today and it is not the whole cost. It is roughly the smaller half.
- Turnkey is one contract, one schedule and one warranty. Shell plus self-finish is many of each.
- Shell defers the expensive part. Deferring is not saving.
- Turnkey puts the coordination risk on the contractor. Shell puts it on you.
- If you do not have trades and time, self-finishing is where the savings evaporate.
What is never in either number
Not included in any number we quote. On rural East Texas land these routinely add $30,000 to $100,000 or more before we pour anything.
- Land
- Well or water tap
- Septic system or sewer tap
- Utility extension to the site
- Driveway and culvert
- Land clearing beyond one acre
- Rock excavation
- Retaining walls
- Detention and drainage improvements
- Impact and development fees
- Furniture, fixtures and equipment
How to decide
Ask what the building has to do on day one. If it has to be occupied, you need turnkey and shell pricing is a distraction. If it has to be dry and locked while you build a business into it, a shell can be the smarter first move.
Then ask who is going to run the finish. If the answer is not a specific person with a specific schedule, the answer is turnkey.
Questions
- What is the difference between a shell and a turnkey metal building?
- A shell is the slab, frame, roof, wall panels, doors and windows. It is dried in, weather tight and empty. Turnkey adds insulation, HVAC, electrical, plumbing, interior framing, drywall, finishes and restrooms, so the building can get a certificate of occupancy.
- How much more does turnkey cost than a shell?
- On a 10,000 square foot warehouse, the shell is $320K to $420K and turnkey is $680K to $880K. The interior roughly doubles the building.
- Can I live in a barndominium shell while I finish it?
- Some people do, and it is legal in some jurisdictions and not in others. It is slower and harder than it sounds, and lenders generally will not fund it. If you go this route, do it with a written plan and a real budget for phase two.
- Should I buy a shell and hire my own trades?
- Only if you have a project manager, real trade relationships and time. The savings come from doing the coordination yourself, so if you are not doing that work, the savings do not exist.
- Does a shell need to be designed for a future finish?
- Yes, if you know the finish is coming. In-slab plumbing sleeves, conduit, service sizing, mechanical support and bracing are cheap during the shell and expensive after. Cutting a finished slab to add a drain costs more than the sleeve would have.
- Do you build shell only?
- Yes. We will also tell you honestly whether your plan for finishing it is realistic before we take the job.
Keep reading
Commercial steel building cost per square foot
Shell and turnkey cost per square foot for commercial steel buildings in DFW and East Texas, by size band, with what moves the number inside each band.
Metal building cost in Texas
What a metal building actually costs in Texas in 2026, by size and by scope, with the site costs nobody puts in the brochure number.
Barndominium cost in North and East Texas
What a barndominium costs per square foot by finish level in DFW and East Texas, what the land costs on top of it, and where people get their budgets wrong.
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