What You Need Before You Order
You finally have a plan in your head. The gravel is down. The measurements look good. Maybe it’s a metal carport for your trucks, or a garage for tools and weekend projects, or a barn to keep equipment out of the weather.
Then the county asks for a permit, and everything stops.
Most metal building projects do need some level of approval, even if it’s just a carport. And in 2026, more permit offices are enforcing rules about site plans, setbacks, wind and snow ratings, and how the structure will be anchored. Building codes exist to protect public health and safety, and local officials are responsible for enforcing that standard.
This guide walks you through a clear, real-world permit checklist for metal carports, garages, and barns, so that you’ll encounter fewer surprises and faster approvals.
Quick reality check: Do you always need a permit?
In many jurisdictions, yes. Sometimes the permit is a full building permit. Other times it’s a zoning clearance, accessory structure permit, or a farm exemption form. It depends on:
- Where you live (city, county, unincorporated area)
- Building size and height
- Use (storage vs workshop vs business vs livestock)
- Foundation type (gravel, asphalt, concrete slab, piers)
- Wind/snow/flood zone requirements
- HOA rules (if applicable)
The common exception people hear about (and misunderstand)
The International Residential Code (IRC) includes exemptions from permits for certain small, one-story detached accessory structures up to 200 sq ft.
But there’s a catch: local jurisdictions can amend that, and zoning rules can still apply even when a building permit is not required. Some areas still require a plot plan or zoning approval for accessory structures.
So you’ll want to treat exemptions as a maybe, not a guarantee.
Step 1: Identify what your structure is (because it permits change by classification)
Before you ever order, define the structure in plain terms the permit office will recognize:
Metal carport
Typically open-sided (or mostly open), intended for vehicle/equipment cover.
Metal garage
Enclosed, lockable, often treated more like a building with additional requirements (doors, electrical, slab, fire separation if near the house).
Metal barn
Can be agricultural storage, livestock shelter, hay barn, or a mixed-use barn. The minute it includes conditioned space, an office, or public access, it often triggers stricter code review.
Step 2: Call the right office (and ask these 7 questions)
Start with your local building department and planning/zoning office. Ask:
- Do I need a building permit, zoning permit, or both for a metal carport/garage/barn?
- What are the setback requirements from property lines, easements, septic, wells, and other structures?
- What documents do you require for submittal (site plan, engineered drawings, foundation plan, etc.)?
- Do you require engineered or stamped plans for metal structures? (Many jurisdictions do.)
- What design loads do you require (wind speed, snow load, exposure category, risk category)? Wind design is commonly tied to ASCE standards referenced by building codes.
- How many inspections will I need and at what stages (footing, slab, anchor, final)?
- Do you allow online permit submittal and how long is review currently running?
Write the answers down. If possible, get them by email. One clear email can save you weeks later.
Step 3: Zoning and site rules (the stuff that kills permits quietly)
Some permit problems are really zoning problems. Even when your building is structurally fine, it gets rejected because it’s too close to a line, sits in an easement, or violates a land-use rule.
Your zoning checklist
- Zoning district and allowed uses (residential, agricultural, mixed-use)
- Accessory structure limits (max square footage, max height, number of structures)
- Setbacks (front, side, rear, and distance from other buildings)
- Easements (utilities, drainage, access)
- Septic and well clearances (huge in rural areas)
- Floodplain rules if your parcel is in a mapped flood hazard area
If floodplain is even a possibility, look up your address on FEMA’s Flood Map Service Center. Flood zones can affect where you can build and what elevation or anchoring is required.
Step 4: What to Include in Your Permit Packet
Across the U.S., most permit offices ask for the same core items. Local checklists often require a site plan/plot plan showing setbacks, structures, and utilities.
This typically includes:
A. Site plan (plot plan)
Usually needs to show:
- Property lines with dimensions
- Existing buildings (house, sheds, barns, etc.)
- Proposed building location
- Setbacks to each property line
- Driveways, easements, and utilities
- Septic system and well locations (if applicable)
Many jurisdictions make the site plan the first requirement for accessory buildings.
B. Building plans (structure drawings)
Depending on your area, this may include:
- Overall dimensions (width x length x height)
- Roof style and pitch
- Openings (doors, roll-ups, windows)
- Framing details (trusses/rafters, bracing)
- Elevations (front/side views)
Some counties explicitly require sealed drawings for non-wood or metal kit structures.
C. Engineering and design loads
Permit offices often ask for:
- Wind speed rating
- Snow load rating
- Risk category (depending on use)
- Anchoring details
- Foundation/slab details (or pier footings)
If you’re ordering through Get Carports, many listings note full engineer’s drawings available upon request and options for certified loads for permit-required areas.
Also, anchoring is not just an installation detail in higher wind or inspection areas. It ties into the overall engineered plan.
D. Foundation plan
Even for a carport, the permit office may want to know what it’s sitting on:
- Gravel pad
- Asphalt
- Concrete slab
- Concrete piers/footings
Foundation requirements change with soil, frost depth, and loads.
E. Application details
Expect basics like:
- Owner and contractor info
- Project valuation
- Intended use (storage, parking, livestock, shop)
- Utility work (electrical/plumbing/mechanical)
The 2026 “Before You Order” Checklist
Use this as your pre-order filter. If you can check most of these boxes, your permit process will usually be smooth sailing.
1) Property and zoning
- I know my zoning district and whether the structure is allowed
- I know max size/height rules for accessory buildings
- I confirmed setbacks (property lines, easements, septic/well, other structures)
- HOA approval is not required OR I have it in writing
- I checked flood zone status (if relevant)
2) Building details locked in
- Final width, length, and height selected
- Roof style chosen (regular, boxed eave, vertical, etc.)
- Doors/openings planned (garage doors, walk-in doors, windows)
- I know if it will be open-sided (carport) or enclosed (garage/building)
3) Engineering, loads, and anchoring
- I know required wind speed and snow load for my location
- I confirmed if engineered/stamped plans are required
- Anchoring method matches my foundation and local expectations
- If needed, engineer drawings are requested/ready
4) Site preparation readiness
- Site is accessible for delivery and installation
- Ground is reasonably level or I have a grading plan
- I have a plan for drainage so water won’t run toward the slab/pad
- Underground utilities are identified before digging
5) Permit submission
- Site plan/plot plan is ready with setbacks shown
- Structure plans are ready (dimensions + elevations)
- Foundation plan included if required
- Inspections list is confirmed (what gets inspected and when)
Carports vs. Garages vs. Barns: what changes on permits?
Metal carports (what to watch)
- Setbacks and height limits are the most common issue.
- Even if the structure is open, many areas still want a plot plan.
- Wind anchoring is often the make-or-break detail in storm-prone regions.
Metal garages (where permits get stricter)
- Enclosed buildings often trigger more plan review.
- If you’re adding electrical, expect separate electrical permits and inspections.
- If placed close to a home, you may run into fire separation rules depending on your local code enforcement.
Metal barns (the “ag exemption” gray zone)
- Some places offer agricultural exemptions, but these are not universal and they often come with conditions like “not for human occupancy” or zoning approval still required.
- If the barn includes a workshop, office, retail, or living space, assume it will be treated like a standard building.
Common reasons permits get delayed (and how to avoid them)
No clear site plan
Fix: provide a clean plot plan showing property lines, structure location, and distances.
Missing design loads
Fix: ask your permit office what wind and snow loads they require, then order the building to match.
No anchoring/foundation detail
Fix: match your anchor plan to the surface and local expectations.
Structure described wrong
Fix: be honest about enclosure, doors, and intended use.
Trying to permit after delivery is scheduled
Fix: permit first, order second, especially for certified builds.
FAQs about Metal Building Permits
Do you have questions about obtaining a building permit for your metal building? Below, we’ve answered some of the same questions we see most often:
Can I order first and permit later?
You can, but it’s risky. If the permit office requires a different setback, height, or load rating than what you ordered, you may be stuck redesigning midstream.
Is a small metal building always exempt under 200 sq ft?
Not always. The IRC has exemptions, but local amendments and zoning rules can still require approvals.
What if I’m in a flood zone?
Start with FEMA’s map tools and ask your local office what restrictions apply. Floodplain development rules can affect placement and foundation requirements.
Next step: make your permit office happy before you buy
If you want the simplest path, do this in order:
- Confirm zoning + setbacks
- Ask what documents are required
- Confirm wind/snow load requirements
- Choose your building specs
- Request engineer drawings if needed
- Submit permit
- Order with confidence
When you’re ready to price out a structure that fits your local requirements, Get Carports can help you configure the size, roof style, and certification options, and provide engineer drawings upon request for many buildings.
Call us today at (800) 691-5221 and we’ll help you line up the right specs before you place the order.
