Metal Carport Cost: What You’ll Actually Pay in 2026
A metal carport cost is one of the first numbers homeowners want to pin down before buying, and for good reason: prices swing from under $3,000 for a basic kit to well past $20,000 for a fully custom, enclosed structure. Most people land somewhere in the middle. Across the industry, an installed steel carport runs roughly $10 to $30 per square foot, with the national average settling around $20 per square foot and most complete projects finishing between $3,000 and $10,000.
That spread isn’t random. Size, roof style, gauge of steel, whether you pour a concrete slab, and whether you hire a crew or bolt it together yourself all move the final number by thousands of dollars. The good news is that none of these are surprises once you know what drives them.
This guide walks through real 2026 pricing by size and build method, so you can compare quotes with confidence and stop paying for extras you don’t need.
What a Metal Carport Costs by Size
Size is the biggest single lever on a metal carport cost, because steel is priced by the square foot and the number of structural posts. The table below gives working ranges for the four configurations homeowners order most often.
| Carport Size | Typical Dimensions | Installed Price Range | Best For |
|---|---|---|---|
| Single-car (regular roof) | 12 x 20 ft | $3,000–$4,500 | One sedan or compact SUV |
| Single-car (boxed-eave) | 12 x 21 ft | $4,000–$5,500 | Taller trucks and vans |
| Double-car | 20 x 20 ft | $5,500–$9,000 | Two vehicles side by side |
| Oversized / RV | 24 x 36 ft | $9,000–$18,000+ | RVs, boats, trailers |
A standard 12-by-20-foot single carport is the value sweet spot. It’s big enough for most vehicles, keeps materials waste low, and is available from nearly every supplier as a stock kit, which means manufacturers already have the jigs and framing cut to size.
Double-car units cost more than twice the materials of a single but usually less than twice the labor, because the crew is already on site and the foundation crew can pour both bays in one pass. That’s why a 20-by-20 can often be had for around $6,000 to $8,000 installed rather than double the single-car price.
Photo by Stephen McDaniel via Pexels
Metal Carport Cost per Square Foot
If you want a quick number to check quotes against, work from square-foot pricing. Installed metal carports typically land between $10 and $30 per square foot, with $20 as a fair middle figure. Materials alone run lower — roughly $5 to $15 per square foot for a kit — with labor and the slab making up the difference.
- Roof-only structure: $4.50–$5.75 per square foot for the steel frame and roof sheet.
- Fully enclosed sides and ends: adds roughly $3–$6 per square foot over an open carport.
- Concrete slab: $6–$9 per square foot; a 12-by-20 slab with piers starts around $1,700.
- Labor for a crew-installed carport: $8–$10 per square foot.
Here’s how that math plays out on a 240-square-foot single carport (12 x 20):
- Steel kit, regular roof: $1,295–$3,000
- Site prep and anchoring: $400–$800
- Concrete slab with piers: $1,700–$2,200
- Labor and assembly: $800–$1,500
That lands right in the $3,500 to $7,500 range — which is exactly why two neighbors can buy the “same” carport and pay a thousand dollars apart. One skipped the slab, one hired a cheaper crew, one bought a heavier-gauge kit.
Metal Carport Kit vs. Custom Build
The single largest cost decision is whether you buy a kit and assemble it (or have a handyman do it) versus ordering a custom structure engineered and erected for your lot.
| Feature | Metal Carport Kit | Custom-Built Carport |
|---|---|---|
| Typical price | $1,295–$7,000 | $4,000–$20,000+ |
| Sizes available | Stock widths/lengths | Any dimension you specify |
| Assembly | DIY or local handyman | Professional crew |
| Lead time | Days to a few weeks | Several weeks to months |
| Engineering | Pre-approved standard design | Engineered for wind/snow load |
Kits dominate the budget end for a reason: a standard single-car kit can start as low as $1,295, and even with a slab and hired labor you’re rarely over $7,000. The trade-off is flexibility. Kits come in set sizes, and the steel gauge and roof style are whatever the manufacturer offers for that price point.
Custom builds make sense when you need a specific width for an RV, a taller clearance for a lifted truck, or certification for high wind and snow zones. Expect to pay $4,000 to $12,000 on average, with enclosed or extra-tall custom designs pushing past $15,000. If you live where the county requires stamped engineering drawings, budget an extra $500 to $1,500 for that paperwork.
Photo by Kindel Media via Pexels
What Drives the Price Up (or Down)
Beyond size and build method, five details quietly move a metal carport cost by hundreds or thousands of dollars.
- Steel gauge. 12-gauge and 14-gauge framing costs more than 29-gauge roof sheet but stands up to heavy snow and wind. Lighter-gauge “economy” kits are cheap up front and sag first in a storm.
- Roof style. Regular roofs are cheapest; boxed-eave and vertical roofs cost more but shed water and snow better. Vertical roofs are the standard in northern states.
- Foundation choice. A poured slab adds $1,700 or more but keeps the structure square and makes it easier to convert to a garage later. Gravel pads and ground anchors are far cheaper.
- Certification. Wind-rated and snow-load-certified frames cost extra — worth it if your insurer asks for documentation.
- Extras. Enclosing the sides, adding a storage lean-to, guttering, and a taller eave all add $500–$3,000 each.
Permits are the hidden line item nobody budgets for. Most counties charge $100 to $500 for a carport permit, and some require a site plan or setback inspection before you can even schedule delivery.
How to Keep a Metal Carport Cost Down
You don’t need to buy the cheapest kit to save money — you need to spend it where it matters and skip the rest.
- Buy the size you need, not the size you might want. Going from 12 wide to 18 wide adds hundreds in steel and concrete for space you may never fill.
- Order a standard size. Manufacturers discount stock dimensions because they cut them in volume; custom widths restart the pricing clock.
- Handle site prep yourself. Leveling a gravel pad with a rented compactor costs under $200 versus $800 for a crew to do it.
- Time your order. Steel suppliers often run lower prices in the off-season (late fall to early winter) when demand drops.
- Compare at least three quotes. Prices for the same 20-by-20 unit routinely vary by $1,500 between local dealers.
If you’re weighing a carport against a full enclosure, a detached garage cost runs several times higher once framing, siding, doors, and electrical enter the picture. A carport gets you weather protection for your vehicles at a fraction of that price.
Frequently Asked Questions
How much does a metal carport cost on average?
Most homeowners pay between $3,000 and $10,000 for an installed metal carport, with a national average around $6,500. Single-car kits can start under $1,300 for materials only, while oversized and enclosed custom builds exceed $15,000.
Is it cheaper to buy a metal carport kit or build custom?
Kits are almost always cheaper. A standard kit ranges from $1,295 to $7,000 including typical installation, versus $4,000 to $12,000 or more for a custom-engineered structure. Custom only makes financial sense when you need non-standard dimensions or certified wind and snow ratings.
Do I need a concrete slab under a metal carport?
No. Many carports are anchored to a compacted gravel pad for a few hundred dollars. A concrete slab costs $6 to $9 per square foot (around $1,700 for 12 by 20) but lasts longer, keeps the frame square, and makes a future conversion to a garage easier.
How long does a metal carport last?
A quality 14-gauge or 12-gauge frame with a galvanized roof commonly lasts 20 to 30 years with little maintenance beyond occasional cleaning and checking anchors. Lighter-gauge economy kits tend to show rust and sag sooner, especially in coastal or snowy climates.
Does a metal carport add home value?
It can, modestly. A permanent, permitted carport on a slab adds protected parking and storage, which appraisers and buyers both notice. A portable or temporary unit generally adds little to resale value. Check with a local realtor before counting on it to raise your listing price.
For more on what complements a carport, see our carport ideas for home and the costs of garage door installation if you later enclose the structure.
The Bottom Line
A metal carport cost is easiest to control when you understand the two decisions that matter most: size and build method. A stock single-car kit on a gravel pad can come in under $3,000 all-in, while a custom double-wide with a slab and enclosed sides will run toward $10,000 or beyond. Neither is wrong — they’re just different jobs.
Get three written quotes, ask each supplier to itemize steel gauge, roof style, certification, and foundation work, and compare them line by line. According to Bob Vila’s carport cost guide, the difference between a cheap quote and an expensive one is almost always in the extras, not the steel itself. Pin those down and you’ll know exactly what you’re paying for before the first post goes in the ground.
Ready to protect your vehicles without overpaying? Use the square-foot and size ranges above to screen your next quote — and if you’re still deciding between a carport and full storage, weigh the numbers in our garage insulation guide before you commit.
