20x20 Carports

A 20 x 20 ft carport covers two cars side by side, or one car plus a covered work or play area, on a 400 sq ft footprint. In this size they are Arrow all-steel carports, open or closed in on one, two or three sides; current prices are in the list below.

The frame is 2 in. square steel tube under a galvanized steel roof, rated for wind and snow load, with rounded eaves and a 12 in. overhang at the gables. There are two heights, 9′10″ and 11′11″ overall, and inside it measures 19′9″ by 19′9″. The enclosure kits add 29-gauge galvanized steel walls on one, two or three sides; with three, the carport becomes a building open at one end. For one vehicle see 12x20 carports; for a closed, lockable building, portable garages.

20x20 carport FAQ

Will two cars fit?

Yes. Inside it is 19′9″ wide and 19′9″ deep, room for two cars side by side with a walkway between them. Check the width of your two vehicles with their doors open before you choose the side walls.

Open or enclosed?

Open is the cheapest and the easiest to park under. One wall on the prevailing-wind side cuts drifting snow; three walls give you a building with an open front, the most protection short of a garage. The walls are 29-gauge galvanized steel, matching the roof.

Does a 20x20 carport need a permit?

Expect one. At 400 sq ft it is a permanent structure well above the size most municipalities exempt, and setbacks and lot-coverage limits apply. Ask your building department before you order; it will want the size, the height and how the posts are anchored.

Will it take Canadian snow?

Arrow carports are snow-load rated and the steel roof sheds snow better than fabric, but clear unusual accumulations after major storms, especially on a wide two-car span. Snow-load ratings explained shows how much a roof has to carry where you live.

Guides for 20x20 Carports

All guides

Snow Load Ratings Explained: What PSF Means for Canadian Carports & Garages

Snow load ratings are the most useful spec on a carport, portable garage or utility shelter — and the one buyers most often skim past. Here is what psf actually measures, which ratings really exist on the Canadian market, and how to match one to the winter your address gets.
10 min read
Best Outdoor Structures for Canadian Winters: Carports, Garages & Sheds

Need year-round vehicle and equipment protection in Canada? Compare steel carports, portable garages (ShelterTube vs ShelterCoat), and permanent steel buildings. Snow load ratings, climate zone recommendations, and sizing guides for every Canadian province.
7 min read
Carport Enclosure Kits in Canada: Sides, Rear Walls & Fit

An open carport keeps snow off the roof of your car but does nothing about the wind. Here is how carport enclosure kits are sized, which face to close first in a Canadian winter, and when steel panels beat a removable fabric enclosure.
9 min read
Winter Car Shelters in Canada: Sizing, Anchoring & Timing

The garage is full, the second vehicle sleeps outside and the forecast has started to mention flurries. Here is how to size a winter car shelter to your vehicle, read the cover specifications, anchor it on asphalt or gravel, and stay inside your municipality's seasonal window.
10 min read