How to Enclose or Convert a Metal Carport into a Garage

An open carport is great for shade and quick cover, but a lot of owners eventually want more — somewhere lockable for tools, a dry spot for a project car, or a true workshop. The good news is that a metal carport already has the hard part done: an engineered steel frame and a roof. Enclosing it means adding walls and doors to that existing structure. This guide walks through why people enclose, your partial-vs-full options, the pieces you'll add, and the one permit step you shouldn't skip.

Why enclose a carport?

The motivation almost always comes down to three things: storage, security, and usable space. Closing in the sides turns an open shelter into a lockable building where you can store tools, equipment, lawn gear, and seasonal items out of sight. It adds real security — a roll-up door and walk door keep a vehicle or valuables protected instead of exposed. And it unlocks a workshop or hobby space you can actually heat in a Wisconsin winter once it's insulated. Enclosing also gives much better protection from blowing snow, rain, and wind than an open carport ever could.

Partial vs full enclosure

You don't have to close in everything. A partial enclosure adds panels to one, two, or three sides — for example, closing the back and one side to block prevailing wind and snow while keeping the front open for drive-in access. It's the budget-friendly option and a good fit when you mainly want a windbreak and a bit more storage. A full enclosure closes all sides and gives you a true garage: a complete, securable building with a garage door. Full enclosure costs more and is far more likely to need a permit, but it's what you want for security, a workshop, or a conditioned space.

What goes into enclosing a metal carport

Converting an open carport into a garage is mostly about adding the right pieces to your existing frame. Here's what a typical full conversion includes:

• Wall panels — sheet-metal siding closes the open sides, matched to your roof color and fastened to the frame.
• Roll-up garage door — a front overhead or roll-up door lets vehicles in and out and locks the building up.
• Walk-in door — a standard entry door for everyday access without raising the big door.
• Windows — optional, for natural light and ventilation in a workshop.
• Insulation — needed if you plan to heat the space; turns a garage into a year-round workshop.
• Anchoring check — enclosed walls catch more wind, so the frame must be properly anchored and rated for the added load. ✎

One thing worth flagging early: an open carport and an enclosed garage carry wind differently. Once the sides are paneled, the building catches a lot more wind load, so the frame gauge and anchoring need to be right. That's why it's smart to have a Building Specialist confirm your existing frame is a good candidate before you start adding panels.

Don't skip the permit

This is the step people miss. Enclosing a carport usually changes it from an open structure to an enclosed one, and many Wisconsin municipalities treat that as new construction — which can mean a building permit, setback checks, and sometimes engineered drawings. The rules vary by city, town, and county, so always call your local building department before the first panel goes up. We cover thresholds, setbacks, and how engineer-certified drawings make the paperwork easier in our dedicated guide on whether you need a permit for a metal carport in Wisconsin. ✎ Confirm current requirements with your municipality.

Or buy an enclosed garage from the start

If you already know you want a closed-in building, the cleanest route is often to order an enclosed metal garage from the start rather than enclosing an existing carport later. When the structure, anchoring, panels, and doors are engineered together as one building, everything is sized and rated correctly the first time — no retrofitting, no guessing whether the old frame can take the extra wind load. You still get the open, column-free interior and the same 2–4 week delivery, plus a 20-year warranty and engineer-certified drawings that make permitting simpler. If you're only looking for a windbreak and shade, a carport may be all you need; if you want security and a real workshop, an enclosed garage is usually the better value.

Enclose your carport — or start with a garage

We can close in your existing carport or build a fully enclosed, engineer-certified metal garage with the doors, windows, and insulation you want — delivered across Wisconsin in 2–4 weeks with a 20-year warranty.

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✎ This guide is general information. Whether your specific frame can be enclosed, anchoring requirements, pricing, and local permit rules must be confirmed with your municipality and a Wisconsin Carports Building Specialist.

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Common Enclosure Questions

How do you enclose a metal carport?

You add sheet-metal wall panels to the open sides, frame in the openings, and install doors — usually a front roll-up garage door, a walk-in door, and optional windows. The frame must be anchored so the closed walls handle wind, and insulation can be added for a conditioned space.

How do you turn a metal carport into a garage?

Fully enclose all sides, add a garage door and a walk door, and secure the building. The cleanest path is to have the existing engineered frame closed in with matching panels and certified openings, or to order it as an enclosed garage from the start so structure, anchoring, and doors are designed together.

Can any carport be enclosed?

Most steel carports can be enclosed, but it depends on the frame's gauge, span, and anchoring. A heavier-gauge, properly anchored frame is the best candidate because enclosed walls catch more wind. Have a Building Specialist confirm your specific frame before adding panels and doors.

Do I need a permit to enclose a carport?

Often yes. Enclosing a carport changes it from an open structure to an enclosed one, which many Wisconsin municipalities treat as new construction needing a permit, setbacks, and sometimes engineered drawings. Always confirm with your local building department before you start. Keep Reading

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