A carport is an open, roofed structure with no walls or only partial walls, while a garage is a fully enclosed building with walls, a roof, and a door that closes and locks. The difference is enclosure: a carport shelters a vehicle from sun, rain, and falling snow from above while staying open on the sides, and a garage seals the vehicle inside a weather-tight, securable space. That single distinction drives everything else, including cost, security, what you can store, and whether the build needs a permit.
This page sits under the metal garage kits pillar and gives the full answer that our carport vs enclosed metal garage guide covers in brief. Below: what the enclosure difference changes, how the two compare on protection, security, and cost, and which one fits your project. Every figure here is a dated 2026 illustrative range to confirm against a live quote, never a fixed price.
The difference
The core difference is open cover vs enclosed building
The whole distinction is walls and a door. A carport is a roof on posts, open on the sides, built to keep weather off a vehicle for the least money. A garage takes that same roof and closes it in with wall panels and at least one door, so the space locks, holds dust and temperature out, and works for more than parking.
That one choice changes how the structure behaves. A carport blocks sun and falling rain and snow from above, but wind-driven weather still reaches the sides, and nothing about it locks. A garage closes all four sides, so it secures tools and vehicles, keeps out blowing rain and dust, and gives you a wall to insulate and a place to wire power. For the enclosed end of that range, see our 1-car metal garage kits.
How they compare
How the two differ on protection, security, and cost
The open carport and the enclosed garage split along a few lines that matter to a buyer: how much weather they keep out, whether they secure anything, what you can store, and what they cost. Read them together, because the carport wins on price for exactly the reasons it loses on protection.
| Carport | Garage | |
|---|---|---|
| Structure | Roof on posts, open sides | Walls, roof, and a door |
| Weather | Blocks sun and falling rain or snow | Seals out wind-driven rain, dust, cold |
| Security | None, nothing locks | Locks and closes |
| Storage use | Vehicles and equipment only | Vehicles, tools, workshop, storage |
| Permit | Often lighter or none ‹confirm› | Usually permitted as a building ‹confirm› |
| Relative cost | Lower, less steel and no doors | Higher, walls and doors add material |
| Best for | Mild climate, daily parking | Security, climate, long-term storage |
A system comparison, not a verdict. The right pick matches your climate, your security needs, and your budget.
Protection is the headline difference. A carport keeps the sun and the worst of the rain off a daily driver, which is plenty in a mild climate. A garage closes the gap the carport leaves open, so a restored car, a set of tools, or anything that should stay dry and dust-free belongs inside walls. If you want enclosure but also more room to work, a workshop garage combo building adds a shop bay to the same shell.
Security is the difference you cannot retrofit cheaply. A carport offers none, because there is nothing to lock. A garage secures what is inside the moment you close the door, which is why most buyers who store more than a car end up enclosing the space. For the attached-or-standalone side of that decision, see detached vs attached metal garages.
On cost
Which is cheaper, and why the gap exists
A carport is the cheaper structure, because it uses less steel and skips the wall panels and doors that a garage needs. A garage costs more for the same footprint, and the gap is the price of enclosure and security.
The reason is straightforward. A carport is a frame and a roof, so it covers a vehicle with the fewest parts. A garage adds wall sheeting, framing for the openings, and at least one door, and each of those is real material and labor. On the same footprint, the jump from an open cover to a fully enclosed building can run a few thousand dollars ‹confirm›, and the door and any insulation you add move it further. The fair way to compare is to price the exact build you want, same size and same site, not a bare carport against a finished garage.
Compare the same footprint
Most carport-versus-garage sticker shock comes from comparing two different buildings. A small open carport against a finished, insulated garage is not a fair fight. Decide the size and finish level first, then quote both to that standard so the only variable is the walls and door. The metal garage kit prices guide breaks down what belongs in each line so you compare like for like.
Which to choose
Which one your project needs
Let the use and the climate decide. Simple parking in mild weather points to a carport; security, harsh weather, or anything beyond parking points to a garage. Here is how the common projects land:
- Daily driver in a mild climate. Carport. It keeps the sun and rain off for the least money, and it goes up fast.
- RV, boat, or equipment you just need covered. Carport, sized tall and long enough to clear the load.
- Tools, a workshop, or anything you want locked away. Garage. You need the walls, the door, and a space you can insulate and wire. Start with our 2-car metal garage kits.
- Harsh weather, snow country, or a vehicle you want sealed in. Garage. Enclosure is the point, and it pays back in protection.
One option keeps your future open. Many metal carports can be enclosed later, since the frame is already there, so you can start with an open cover and add walls and a door when the budget allows, as long as the frame was speced for it. If that is the plan, tell your supplier up front so the carport is built to carry the wall load. For the deeper build comparison, see the carport vs enclosed metal garage guide.
Related
Read more
This open-or-enclosed answer connects to the rest of your planning. Follow these next:
- Metal garage kits: the complete guide (the parent pillar).
- Carport vs enclosed metal garage (the full guide this page deepens).
- Detached vs attached metal garages (the next siting decision once you enclose).
- Metal garage kit prices (what each option costs to build).
- Metal garage door options and sizes (the door that turns a cover into a garage).
