Short answer: almost certainly yes. Most jurisdictions require a permit for a permanent steel building, and the handful of exemptions that exist are narrower than most buyers assume — narrow enough that they rarely apply to an actual Northcraft building.
That is not a sales pitch for red tape. It is a straight answer to a question we get on almost every call, and the honest version of the answer has some nuance worth knowing before you assume either “of course I need one” or “it’s small, I’ll skip it.” If you want to talk through your specific site and jurisdiction, call us at (888) 460-9294.
Why steel buildings almost always need a permit
A permit exists so your local building department can confirm a structure meets the code requirements for your specific site — wind exposure, snow load, setbacks from property lines, and (for a conditioned space) electrical and energy code. A permanent steel building is exactly the kind of structure that process is built for: it is engineered to carry real structural loads, it typically sits on a permanent foundation, and in most cases it adds real assessed value to the property.
That is also why a permit is not just a hoop to jump through. The stamped engineering drawings that come with a properly engineered building are what let a plan reviewer confirm, on paper, that the structure will actually hold up under your area’s wind and snow loads — before anyone starts digging a foundation. Skipping that step does not make the load requirements go away, it just means nobody checked.
Is there a size where you do not need a permit?
Sometimes, but it is a narrower exemption than most people expect. Many local codes, following the model International Residential Code’s small-accessory-structure provision, exempt one-story detached structures like tool sheds or playhouses under roughly 200 square feet, provided there is no electrical or plumbing and no use as habitable space. Whether your city or county has actually adopted that exact threshold — some raise it, some lower it, some skip it entirely — is a local question, not a national one, so the only reliable way to know is to ask your building department directly.
Here is the part worth sitting with: 200 square feet is smaller than almost any real steel building project. Northcraft’s smallest published size is a 20x24, which is 480 square feet — more than double a typical small-structure exemption even in a jurisdiction that has one. If you are shopping steel buildings at all, you are very likely outside whatever small-shed carve-out your area might offer. Plan on a permit.
What the permit process actually looks like
The process is more straightforward than people expect, mainly because a properly engineered building arrives with most of the paperwork already done. Here is the typical sequence:
1. Site plan. You or your contractor submits a site plan showing where the building sits relative to property lines, setbacks, easements, and any existing structures.
2. Stamped engineering drawings. This is where an engineered building has a real advantage over an unengineered one. Northcraft buildings come with stamped drawings from a licensed engineer, sized to your building’s real wind, snow, and (where applicable) seismic loads. The plan reviewer checks those numbers against your local code — that is most of what a structural review is.
3. Plan review. Turnaround varies by jurisdiction, from a few days in a small rural county to several weeks in a busy metro building department. This step runs in parallel with fabrication, not after it — see our article on steel building lead times for how the timeline actually stacks up.
4. Foundation and framing inspections. Most jurisdictions inspect the foundation before it is poured (rebar and anchor bolt placement) and again once the building frame is up, before it is closed in.
5. Final inspection and certificate of occupancy. Required if the building will be conditioned or occupied space; a storage-only building may skip this step depending on local rules.
Who actually runs that review varies more than most buyers expect, too. Some states write one mandatory code that every municipality has to follow, which tends to make review more predictable town to town — New Jersey and Rhode Island both work this way. Others leave adoption to individual counties — Delaware has no single statewide structural code at all, so which edition applies can depend on exactly where in the state your site sits. Neither pattern is better or worse; it just means confirming with your specific jurisdiction rather than assuming how a neighboring state handles it.
Maine is a genuine edge case worth knowing about if you are building there: its Unorganized Territory, covering slightly over half the state’s land, has no municipal building department to issue a local permit from at all — though statewide code compliance is still the property owner’s legal responsibility, and other land-use permits can still apply. Our Maine state page walks through what that actually means if your site falls there. That is the exception, not the rule — it is a good reminder to confirm with your own town or county rather than assume.
Do HOA rules count as a permit?
No, and this trips people up. A homeowners’ association approval and a government building permit are two completely separate processes, and you may need both. An HOA can require its own design review (color, placement, size limits) even for a building your county has no problem permitting, and getting HOA sign-off does not exempt you from the actual permit. Check both before you order.
What a building department is actually checking
Knowing what a reviewer is looking at helps you understand why the paperwork matters:
Wind load rating for your exposure category and local wind speed requirement
Ground snow load rating for your elevation and location
Foundation design matched to your soil conditions and frost depth
Setbacks from property lines, easements, and other structures
Electrical and energy code, if the space will be conditioned or wired
This is exactly why load ratings are not just a spec sheet line item. For more on what a wind or snow load rating actually means and how it is determined for your area, see our articles on snow load ratings and wind load ratings.
When you can probably skip it
We would rather tell you the truth than sell you a permit you do not need. You are more likely to be exempt if:
The structure is genuinely small (well under your local small-structure threshold, if one exists)
It has no foundation, no electrical, and no plumbing
It is not habitable and not used to store anything requiring code compliance (like a vehicle in some areas)
Your specific jurisdiction has confirmed, in writing or over the phone, that it does not apply
That is a short list, and most real steel building projects — anything sized to park equipment, run a workshop, or shelter livestock — fall outside it. If your project fits that description, plan on the permit from the start rather than finding out partway through.
What happens if you skip a required permit
Beyond the legal exposure (stop-work orders, fines, and in some jurisdictions a requirement to remove the structure), an unpermitted building can complicate insurance claims and resale. An insurer can deny a claim on a structure that was never permitted, and a buyer’s inspector or their lender’s appraiser will often flag it during a sale. The permit fee is rarely the expensive part of this decision — the risk of skipping it is.
Get it right the first time
Every Northcraft building comes with stamped engineering drawings sized to your real location — not a generic national spec — which is the single biggest thing that makes a permit application go smoothly. If you are not sure what your local building department will require, call us at (888) 460-9294 or email estimating@northcraftsteel.com. We can tell you what your drawings will include and help you figure out what to ask your building department before you order. And once you know a permit is coming, our foundation requirements article is the natural next read — the foundation is usually the first thing your building department inspects.