Barndominium shell or turnkey: which one should you buy?

It varies by builder, which is the first thing to pin down in writing. At minimum: the pad and slab or foundation, the post-frame or steel structure, the roof, the exterior siding, and the exterior doors and windows, so the building is weathertight. Some shell contracts add the concrete floor throughout, some add interior framing, some add rough-in of electrical, plumbing and HVAC (a "dried-in shell with rough-ins"), and some stop at the metal. Two builders quoting "a shell" can be quoting jobs that differ by a large fraction of the total cost.

Everything inside: interior framing, insulation, electrical, plumbing, HVAC, drywall, floors, kitchen, baths, trim, paint, and the coordination of all of it. Also the inspections, where the county provides them, and the third-party inspections where it does not. Also the schedule. A turnkey builder has a crew and a sequence; an owner-finisher has weekends and subcontractors who have other jobs.

A contractor you hire for residential work over $10,000, including labor and materials, needs an Alabama home builder license. That reaches most of the interior trades on a barndominium: a full electrical or plumbing package, an HVAC system, a kitchen. Hiring unlicensed help to save money on the inside is hiring outside the law and outside the licensing board's 2015 IRC backstop. Check every contractor on the board's lookup.

Source: Alabama Home Builders Licensure Board, frequently asked questions, read 2026-09-05.

Source: Alabama Home Builders Licensure Board, regulation changes clarifying investigation standards, read 2026-09-05.

In Madison County, the interior work is inspected whether the builder or the owner does it, and the permit and inspection sequence continue through the finish. In the counties that state or show no building permit, the county does not follow the interior at all, which puts the whole standard on the contracts and on the inspections you arrange. Either way, the septic permit in your name and the floodplain and driveway permits where they apply do not change with the shell decision. The permit guide has each county's status.

Source: Code of Alabama section 34-14A-12, as published by the Home Builders Licensure Board, read 2026-09-05.

This is where the shell route most often fails. A construction loan draws against completed stages that the lender can inspect, and many lenders will not fund owner-completed stages at all. A shell paid for in cash and financed later is appraised as what it is, an unfinished building, and valued below its cost. The workable versions are: cash for the whole project, a lender who agrees up front to a draw schedule against owner-completed work, or a dried-in shell with rough-ins from the builder plus a defined, contracted finish package. Talk to the lender before the shell contract. The financing guide explains the appraisal gap that sits under all of this.

Owners with cash or a lender who has agreed to the plan; the trades or the time to do a large share of the interior themselves, legally; a realistic schedule measured in seasons rather than weeks; and a plan for living somewhere else meanwhile. Farm and shop-house projects where the living quarters are a fraction of the building fit it well. A family that needs to move in by a date, on a loan, does not.

Most people financing the build. One contract, one schedule, one party responsible for the standard, a draw schedule the lender recognizes, and a finished house the appraiser can value as complete. It costs more on paper than a shell plus imagined free labor, and about the same as a shell plus the real cost of finishing it.

A dried-in shell with rough-ins from the licensed builder, then a contracted finish package with a defined scope, or a turnkey contract that carves out the finishes the owner genuinely wants to do, such as paint, flooring in some rooms, or trim. That keeps the mechanical systems and the structure with the licensed builder under one inspection sequence, and gives the owner the part of the job where sweat equity is real and legal. Whatever the split, get it itemized. The cost guide explains what to look for in the estimate.

Ask the builder for the same plan priced three ways: shell, dried-in with rough-ins, and turnkey, itemized. The gaps between the three numbers are the true cost of each piece of the inside, and they are the honest basis for the decision. When you are ready, send your county and your plan and it goes to a licensed local builder.