Oakline Structural Engineering

Barndominiums · Pole Barns · Post-Frame Homes

Barndominium & Post-Frame Engineering

You found the barndominium plans. The county wants a PE stamp. Here’s the part nobody at the kit company mentioned: that stamp has to come from a licensed engineer who actually designs your foundation, posts, and bracing for your lot — and that’s exactly what we do, in all seven states we’re licensed in.

★★★★★ 5.0 on Google · 96 verified reviews · Cody Johnston, PE, MBA · Licensed in NC, SC, GA, TN, TX, KY & AL

Why barndominiums need engineering — even where houses don’t

A conventional stick-framed house can sometimes be built straight from the residential code’s prescriptive tables. A barndominium almost never can. Post-frame and steel construction — long clear spans, tall walls, oversized door openings, and heavy point loads on widely spaced posts — falls outside those tables by design. When your structure isn’t in the tables, the code requires engineered design. That’s why counties that wave through a simple ranch will still ask for sealed drawings on a barndo.

And the kit doesn’t solve it. Most kit and catalog barndo drawings cover the shell the manufacturer sells — with a note, somewhere in the fine print, that the foundation and site-specific engineering are by others. You are the “others.” We’re the engineer.

What we engineer on a barndominium

Foundation & Post Embedment

Piers, thickened slabs, or embedded posts designed for your soil and the real loads coming down each post — the part kit drawings leave to others.

Lateral & Wind Design

Big open boxes catch wind. We design the bracing and diaphragm system that keeps a long-span shell rigid — sized to your county’s actual wind speed.

Roof System & Trusses

Truss reactions chased down through headers and posts to the foundation, so the building below matches what the truss plant assumed.

Lofts, Mezzanines & Interiors

The living space inside the shell — floor systems, stairs, and interior bearing — engineered as part of one continuous load path.

One load path, one engineer. The kit plant engineers its pieces; nobody engineers your building — the way the shell, the interior build-out, and the foundation work together on your specific lot. That’s the role we fill, and it’s the difference between drawings that bounce at plan review and drawings that pass.

How it works

  1. 1.

    Send your kit drawings or floor plan. Cody reviews them personally, for free, and comes back with straight advice and a firm price — usually within a day or two.

  2. 2.

    We engineer your building. Foundation, posts, bracing, roof system, and interior structure — designed for your soil, your wind zone, and the code your county actually enforces.

  3. 3.

    You get sealed, permit-ready drawings. Digitally sealed PDFs under the license for your state, typically within about two weeks — and Cody stays available for reviewer and builder questions after delivery.

Barndominium Questions, Answered

My barndominium kit came with drawings. Aren’t those enough for a permit?

Usually not. Kit drawings typically cover the building shell the manufacturer sells — and most carry a note that foundation and site-specific engineering are by others. The foundation, the post embedment or piers, the connection of the shell to the ground, and everything you build inside (lofts, mezzanines, interior walls) still need to be engineered for your lot and sealed for your county.

Do barndominiums really require an engineer when a regular house might not?

More often, yes. The residential code’s prescriptive tables were written for conventional stick-framed houses. Post-frame and steel structures fall outside those tables almost entirely — long clear spans, large door openings, and concentrated post loads all require engineered design. That’s not our policy; it’s how the code works.

How much does barndominium engineering cost?

It depends on the size, the framing system, and what’s inside the shell. Send us your kit drawings or floor plan and we’ll give you a firm price within 1 business day — the review is free either way. Right-sizing posts, footings, and framing routinely saves more in steel and concrete than the engineering fee costs.

Can you engineer a barndominium in my state?

We’re licensed in North Carolina, South Carolina, Georgia, Tennessee, Texas, Kentucky, and Alabama — and because this work is done from your drawings and your site information, we serve all seven states remotely with sealed digital deliverables.

What about a $300 online stamp for my barndo plans?

There are gig-site listings offering barndominium plans “with engineer stamp” for a few hundred dollars. Understand what a seal legally is: a licensed engineer’s signature on work performed under their responsible charge. An engineer cannot lawfully stamp drawings they didn’t engineer — that’s called plan stamping, and engineers lose licenses over it. Practically: a stamp with no engineering behind it hasn’t analyzed your soil, your wind zone, or your county’s code amendments, which is why these sets bounce at plan review — and you end up paying twice.

Related reading: why permits get rejected over the engineer’s seal · the truss submittal workflow · all seven license states

Building a Barndominium?

Cody personally reviews your plans — flagging structural issues, finding ways to save on your build, and giving straight advice for the right foundation and framing choices specific for your lot. Free, no obligation, and he can also give you a firm engineering price in a day or two.

Have an Engineer Review My Plans — Free