How much does it cost to build a metal carport?

National Average Range:
$4,000 - $10,000

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Updated: August 18, 2022

Reviewed by Cristina Miguelez remodeling expert. Written by

To provide you with the most accurate and up-to-date cost figures, we gather information from a variety of pricing databases, licensed contractors, and industry experts.

A metal carport is a great way to create a quick shelter without the financial commitment of a full-fledged garage. Available at a wide range of price points, metal carports are a cost-effective way to enhance storage, function, and convenience on your property. Setting up a metal carport involves preparing the site, choosing the product, transporting your selection, and installation.

The average range of pricing for a metal carport is $4,000 to $10,000. The average homeowner will pay about $7,000 for a 20’ x 20’ double car metal carport with an A-frame or boxed eave roof. On the low end, you can expect to pay $2,800 for a 12’ x 20’ single car metal carport with a regular style roof and closed ends. On the high end, you will pay $24,000 for a 24’ x 40’ four-car metal carport with a vertical roof and closed ends.

Metal Carport Prices

Metal Carport Cost
National average cost$7,000
Average range$4,000-$10,000

Prefab vs Custom Metal Carport

Many choices are available for prefab metal carports. Several of those are listed in this cost guide, but it focuses on the price of custom metal carports. Homeowners can be attracted to prefab carports because they appear cheaper at the outset, but you may pay more in the long run if you ask for too many add-ons. Custom carports are a little more expensive, but you can personalize all the features, including the design and type of metal. Below you will see a table comparing the cost of an 18' x 25' prefab metal carport with one closed in, and the cost to build a custom metal carport of the same size with one closed end. While the rest of this guide will focus on building custom metal carports, it’s important to note the difference between prefab and custom carports, with prices ranging from $2,000 to $10,000.

Comparison of the Cost to Install a Prefab or Custom Metal Carport (mobile)

TypeCost (Installed)
Prefab$2,000 - $5,000
Custom$4,000 - $10,000

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Average Cost of Metal Carport per Square Foot

While there are prefab kits that require assembly and will be constructed once on-site, homeowners can choose to have their own custom metal carport built. Custom metal carports can be built in a myriad of styles, colors, and materials. One of the most common ways to price a metal carport is by square footage. Construction costs for metal carports vary from $10 to $30 per sq.ft. Adding items such as windows, doors, closed ends, insulation, and more custom finishes increases the price.

Metal Carport Cost by Number of Cars

Although many people use their metal carport for storage, this structure is most popularly used to protect your car, boat, ATV, motorcycle, or RV from the elements and storm damage that can occur due to fallen tree limbs. One of the most important things you must consider is the size of the carport. You want to make sure it is large enough to accommodate the number of vehicles you want to store in it. Metal carports come in various sizes, but some of them are the perfect size for parking vehicles. Costs range based on the size of the metal carport you build, including aluminum and steel materials.

Cost to Build a Metal Carport for ATV, One Car, Two Cars, RV, Three Cars, and Four Cars (mobile)

VehiclesCost (Installed)
ATV (12’ x 10’)$1,200 - $3,600
Single (12’ x 20’)$2,400 - $7,200
Two-Car (20’ x 20’)$4,000 - $12,000
RV (20’ x 30’)$6,000 - $18,000
Three-Car (30’ x 20’)$6,000 - $18,000
Four-Car (40’ x 20’)$8,000 - $24,000

ATV Metal Carport

An ATV and/or motorcycle metal carport is typically much smaller than other carports, so the cost is more affordable at $1,200 to $3,600 for a 12’ x 10’ metal structure. These buildings are compact and meant for a smaller area. Though a miniature version of other carports, this one packs a big punch to protect your motorcycle or ATV from rain, snow, hail, sun, tree sap, frost build-up, and pollen.

Single Car Metal Carport

To install a single car metal carport, you can expect to pay $2,400 to $7,200. Generally speaking, a single carport size would be at least 12’ x 20’. This size won’t allow for much storage space beyond the car, so you may want to go with a larger carport if you are looking for that. A better size might be 16’ x 24’ or 18’ x 24’, particularly if you have a larger vehicle. Usually, a carport is open on one or both ends. It isn’t necessary to have a closed space to protect your car from weather, dust, and dirt.

Two-Car Metal Carport

The cost for a two-car metal carport is around $4,000 to $12,000. A two-car metal carport measures around 20’ x 20’ or 22’ x 22’. If you want some additional storage space for items such as lawn equipment or tools, go to the next size up. Each car needs at least 10 feet of width. You will want the roof to be 10 feet or more to allow for plenty of space above the vehicle. When having your carport installed, determine the best placement for convenience to your home in rain or snow.

Metal RV Carports

Metal RV carport prices and sizes run from $6,000 to $18,000, averaging 20’ x 30’. RV sizes vary greatly, so it really depends on the size of your RV as to what you may need. Also, if your RV is a pull behind camper, do you want your vehicle to fit in the carport as well? If so, you will want to install a longer or wider carport to accommodate the car and the RV. Your RV will last and look good longer if stored under a quality metal RV carport.

Three-Car Metal Carport

Pricing for a three-car metal carport ranges from $6,000 to $18,000. Sizing for three cars varies from 30’ x 20’ and larger, depending on how much extra space you need. Many people like to have space for a dartboard game, card table, or a workshop. Take all of this into consideration when choosing the size you want to have installed.

Four-Car Metal Carport

For those overachievers or big families, a four-car metal carport should be at least 40’ x 20’ at the cost of $8,000 to $24,000. To have this size metal building put on your property, make sure you have enough space to accommodate it. This big size could also be used to house a storage area, workshop, or gaming area with fewer than four cars.

Average Cost of Metal Carport by Size

Several sizes are available when it comes to metal carports prices and sizes. Buyers should consider the needs of the space, such as the number of cars, a boat, RV, ATV, or motorcycle. If the purpose of the carport is to provide storage, a game room space, picnic or family gathering area, or a workshop, an enclosed or partially enclosed metal carport may be a good idea. Below you will see some of the most common sizes for metal carports and the average cost you can expect to pay to build a custom metal carport of each size.

Metal Carport Cost by Size: 12'x20', 12'x25', 18'x20', 18'x25', 18'x35', 20'x20', 20'x25'... (mobile)

SizeCost (Installed)
12’ x 20’$2,400 - $7,200
12’ x 25’$3,000 - $9,000
18’ x 20’$3,600 - $10,800
18’ x 25’$4,500 - $13,500
18’ x 35’$6,300 - $18,900
20’ x 20’$4,000 - $12,000
20’ x 25’$5,000 - $15,000
20’ x 30’$6,000 - $18,000
20’ x 40’$8,000 - $24,000
24’ x 25’$6,000 - $18,000
24’ x 35’$8,500 - $25,200
24’ x 40’$9,600 - $28,800

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Metal Carport Cost by Type

Choosing a metal carport by type is the easy part. There are three options: portable, freestanding, and attached. For people with property, a freestanding carport allows you to store items away from your home that could be a potential fire hazard, such as cars, trucks, boats, lawn equipment, and gas cans. The prices in the table below are based on the cost to build an 18' x 20' metal carport, which ranges from $400 to $10,000.

Cost to Build a Portable, Freestanding, or Attached Metal Carport (mobile)

TypeCost (Labor Included)
Portable$400 - $1,200
Freestanding$900 - $6,000
Attached$1,200 - $10,000

Portable Carports

Portable carports are a viable, less expensive option costing from $400 to $1,200. These are typically made from either powder-coated or galvanized steel tubing. The primary benefits of portable carports are the price and the fact that you don’t need a permit to add them to your property. However, concerns are that its lightweight structure means it is less likely to survive a strong wind storm.

Freestanding Metal Carport

The average cost for a freestanding metal carport is $900 to $6,000. This doesn’t include a concrete foundation which can add $1,600 to $3,500. Consumers have the option of using a concrete foundation or a level ground foundation. A freestanding carport is sometimes called a detached metal carport. This is because it isn’t attached to the home. This type of carport is nice if you have a narrow lot and don’t have room for an attached carport. It also allows for separating your home from harmful fumes or gasses that may come from equipment. Larger properties mean that you have to trek through rain, snow, or cold weather to get to your car.

Attached Metal Carport

Having an attached metal carport installed will cost $1,2000 to $10,000, including materials and labor. If you want a concrete foundation, add $1,600 to $3,500. When finished, your carport will allow you to reach your car in any kind of weather without getting hit with rain or snow. If painted to match your home, an attached metal carport will look more harmonious with your current home. There are some concerns with attaching a carport to a home regarding hurricane force winds or heavy snow. You will have a seam attaching the two pieces. This can cause problems down the line. Also, check your homeowner’s insurance because an attached metal carport may increase your rates.

Metal Carport Prices by Material

If you are thinking about adding a metal carport to your property, steel or aluminum are probably your best and most widely available options. These materials are durable metals made to last through inclement weather, are insect and fireproof, and maintain a beautiful look when properly maintained. Materials such as wood or plastic may not last as long due to damage caused by heat, rain, or snow. Aluminum is more affordable costing $10 to $15 per square foot to install, while steel is slightly higher at $20 to $30 per square foot installed. Average prices range from $4,000 to $12,000 to build a 20’ x 20’ two-car aluminum or steel carport.

Cost to Build an Aluminum or Steel Carport (mobile)

Type of MetalCost (Installed)
Aluminum$4,000 - $6,000
Steel$8,000 - $12,000

Aluminum Carport

Expect to pay $4,000 to $6,000 for a 20’ x 20’ aluminum carport, including installation. Aluminum carport costs are on the less expensive end. Obviously, aluminum is more lightweight, which can be positive or negative. Lightweight means it is easier to install, but on the other hand, it won’t hold up under high winds. Aluminum in its more pliable state can be dented, dinged, or warped under force. It is more difficult to weld and can corrode.

Steel Carport

The cost for a steel carport is much higher at $8,000 to $12,000 for a 20’ x 20’ structure. Steel is a much stronger metal and is more corrosion resistant. It is a harder metal and isn’t prone to denting or bending under pressure. Steel provides better protection from wind or falling trees or branches. Due to its increased weight, steel is harder to work with and is more expensive than aluminum. Homeowners can expect a steel carport to last longer than an aluminum one.

Metal Carport Prices by Roof

The roof you choose for your metal carport increases or decreases the price. Regular or rounded roofing is the least expensive, while vertical roofing costs more. It is important to understand the variances so you can make the right decision for your new carport. Prices range from $4,000 to $10,000 to build a 20’ x 20’ metal carport with that type of roof.

Cost to Build a Flat, Rounded, A-Frame, Vertical, and Gable Roof Metal Carport (mobile)

Roof TypeCost (Installed)
Flat$4,000 - $6,000
Rounded$4,500 - $7,000
A-Frame$5,000 - $7,500
Vertical$5,500 - $9,000
Gable$6,000 - $10,000

Metal Carport Flat Roof

The flat roof is the least expensive at $4,000 to $6,000. Although cheaper, it isn’t always the best choice. For areas where snow or rain is heavy, the flat roof allows the elements to accumulate and cause issues. Standing rain causes rusting, mold and mildew and draws mosquitoes. For heavy snow areas, accumulation can result in the roof caving in or sagging.

Metal Carport Rounded Roof

Pricing for a rounded roof is $4,500 to $7,000. Many websites refer to this roof as the “regular” roof. The difference between this roof and the others is that it wraps around the edges of the roof and has a shallow peak in the center. Some brands have a 6” extension on the front and back of the structure. This is a less expensive version of the metal carport yet still a good option for almost any use. The drawback is that the rain and snow may accumulate next to the base of the carport since there is no overhang.

A-Frame Metal Carport

The cost for this type of metal carport is $5,000 to $7,500. An A-frame metal carport has roof panels that are installed horizontal or parallel to the sides. Also known as a boxed eave metal carport, this less expensive option is still a strong alternative. This roof features an overhang on the sides of the building of six inches to one foot. The overhang allows for good drainage away from the sides of your building. However, leaves and debris can become trapped on the roof and result in the need to clean more often. The A-frame roof is an easier choice if you plan to add half or full walls to the carport later.

Vertical Roof Metal Carport

The pricing for a vertical roof metal carport is $5,500 to $9,000, depending on the size you need. This type of roof is made with vertical or up and down sheeting. This is so that snow or rain can run down effectively. Ridge caps are installed at the edges where the roof meets the side of the carport. Due to this sturdy design, a vertical roof is the strongest available. The only real disadvantage to a vertical roof is the price because the cost is higher than other roof options.

Gable Roof Metal Carport

Purchasing and installing a gable roof metal carport cost from $6,000 to $10,000. As the most expensive carport, the gable roof allows for a much more elaborate, well-built look. The roof is enclosed, so the result is more finished than any other roofline. This type of roof matches the home’s roofline more than any other carport option.

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Labor Cost to Install Metal Carport

Some companies offer free shipping and installation. Others only do so if you spend a certain amount and are within the delivery area. Your carport requires a level 5 foundation and even base for best results. You don’t have to have a concrete pad, but it adds to your carport’s longevity and function. You can have concrete poured for a pad to accommodate your carport for around $6 to $12 per sq. ft. by a professional concrete contractor. If you choose not to pour a slab for your carport, pay a landscape crew to level the earth before your carport is delivered for around $50 to $100 per hour. This means preparation labor costs run from $300 to $700, depending on the extent of the work required. You will also find that most companies require the ground to be level to install.

Then there’s the cost of custom building the carport on site, which is around $8 per square foot for labor. That means the labor costs for a two-car carport are around $3,200, which covers the framing, roofing, and finishing. For a two-car metal carport, labor costs are typically around 40 to 50% of the total project price.

Once the ground or concrete is ready, the installer anchors the base rails. Next, the trusses and frames will be assembled. Third, the trusses and frame will be attached to the base rails. Finally, the panels will be secured to the frame. The process takes four to five hours.

Aluminum Carport Attached to a Modern White House

Metal Carport Replacement Cost

Metal carports are a long-lasting product because they are naturally resistant to termites, fire, and rot. The life span is normally around 20 to 30 years. If you see rust or holes in your metal carport, it may be time to consider replacing it. First, you need to have the old structure torn down and removed. If the old building is a prefab, removing and disposing of it will be fairly inexpensive. A handyman may be able to do the job if no electrical work is required. This will cost you $50 to $100 an hour plus the cost of the disposal or around $300 to $500. If it isn’t prefab, you may need to hire a demolition company for $500 or more. If there is electricity involved, you need to hire an electrician to remove the wiring to ensure it is done safely. This costs $40 to $120 per hour. The city dump charges by weight, so your handyman should be able to estimate the charges for you. Once the existing carport is removed, make sure the area is ready for the new install. If you are using a concrete pad, make sure no cracks or chips need to be repaired. For a ground installation, ensure that the property is level. Add the cost of the removal and disposal of the old carport to the price of having a new one installed. You can expect to spend around $1,500 to $8,200 in total.

Metal Carport Colors

While you have an endless range of color options to choose from, gray and white are the most popular sellers. But for the more adventurous, you could pick orange or barn red. Typically, homeowners want carports that meld with the appearance of their home, garage, or other property structures. However, there are exceptions! You can pick the shade you want at no additional cost unless requesting a custom color. When choosing a vendor, it is best to go with a company that offers paint that is corrosion and rust resistant, durable, and easy to clean. If your metal carport looks dull or drab, they are also easy to paint. You can refurbish or modify the color with a professional paint job for around $1.20 to $2.70 per sq.ft.

Metal Carport Add-On Costs

One of the nicest options you have with a metal carport is the ability to add on and customize your project. There is no need to pay for extras that aren’t exactly what you want. You can pick and choose what is more important to your unique situation. From extending the size to adding sides to increasing the strength of your metal carport, add-ons enhance and beautify your structure. Many options such as a door or window are only available on carports with at least one closed end. Pricing ranges from $1.50 per sq. ft. to $7,000 total. All items in the table except for the insulation are priced on a per-item basis.

Cost to Add Window, Door, Truss, Gable, Walls, and Insulation to Metal Carport (mobile)

Add-On ProjectCost (Installed)
Window$250 - $800
Door$400 - $1,200
Truss$500 - $950
Gable$1,200 - $3,000
Walls$1,500 - $4,500
Insulation (Walls and Ceiling)$3,000 - $7,000

Pros and Cons of a Metal Carport

Consider both the pros and cons of adding a metal carport to your home or property. Do the pros outweigh the cons? That depends on the purpose of the carport. For many, it is the perfect cost-effective solution to more storage or fast shelter.

A metal carport is less expensive than a garage and takes less time to construct. You can expect your new carport to be durable and resistant to insects, mold, mildew, and rot. Metal is also a fireproof material. A metal carport requires less maintenance than a wooden one. Due to the openness of the construction, cross ventilation is great, and your metal carport is a more versatile choice than others.

There are also some disadvantages to a metal carport. With this type of structure, you must have level ground, and this costs money. Whether you want concrete or ground, it has to be completely level for the carport to be installed correctly. Although it is cheaper to install a metal carport versus a wood one, it may not last as long. You are limited on expansion. Also, you cannot convert a metal carport into a living space. Metal carports are not a return on investment item. As a DIY project, this project would be overwhelming and require lots of help.


Most metal carports are treated to be rust-resistant when you purchase them. Talk to your retailer about treatments and protective coatings that can be applied to carports to prevent corrosion. Keep your carport clean with regular pressure washing. Be careful about pressure washing because you don’t want the metal to be damaged. Metal carports are easy to maintain. Cleaning is simple with warm water and dish soap. A long-handled scrub brush and ladder enable you to reach the very top. Cleaning should be done every month or so. Always consult your carport manufacturer for recommendations for cleaning solvent suggestions.

Pole Barn vs Metal Carport

Many people confuse a pole barn with a metal carport, but they are two different things. A pole barn is an enclosed building, much like a large shed or garage. Multi-ply wood columns are the main framing element. Each is attached to a wood sidewall sheeting rail. The roof is constructed as a wood frame with a horizontal beam that supports the rafters. The pole barn is traditionally used on farms or estates for horses or equipment. More recently, they have become popular as smaller buildings and even homes. Pole barns cost from $7 to $60 per sq.ft. to install depending on the finishes. Pricing for a shell pole barn to use as vehicle storage would be $2,100 to $18,000 for a 15’ x 20’ structure. Compare this to the cost to build a 15’ x 20’ freestanding metal carport for $3,000 to $9,000.

Comparison of the Cost to Install a Metal Carport or a Pole Barn (mobile)

StructureCost (Installed)
Pole Barn$2,100 - $18,000
Metal Carport$3,000 - $9,000

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Enhancement and Improvement Costs

Gabling Covers

Gabling covers add an aesthetic touch to the end caps of the roof. Buyers often like this option for cohesion with their home’s design and roofing style. Usually, it costs $225 to gable each one of your end caps. The gables are used to provide additional support. This is done by fastening the roof to the side of the building with gables.


Anchoring your carport protects against high winds, helpful in coastal regions or the stormy Northeast. Thicker steel defends against the elements. However, plan on paying top dollar for a more durable product or longer warranty coverage. The cost will likely be $3,600 to $10,800 for an 18’ x 20’ steel carport, depending on location.

Metal Carports with Storage

A metal carport is a handy area to store vehicles. Often, homeowners need extra space to keep lawn and sports equipment. It is better to store these items in an enclosed area to avoid weather damage such as moisture, heat rot, insect damage, rust, and other issues. An 18’ x 20’ metal carport with a storage area costs $7,500 to $10,000.

Additional Considerations and Costs

  • Permits. In most municipalities, you need a building permit for a carport unless it is a portable carport, in which case you do not. Before planning on adding a carport, know your property lines and the specific measurements of the carport you are considering. This information is required for the building permit, along with payment of a fee that varies geographically. If your local zoning ordinances require it, your carport retailer may pull the permit and provide documentation on your behalf.
  • DIY. It is not uncommon for savvy DIYers to add carports to their property. However, be warned that this is heavy and labor-intensive work. Constructing a carport on your own requires several different skills from welding, to roofing, to landscaping, each of which also requires a multitude of tools.
  • Warranty. Most new metal carports that you buy carry a 10-year guarantee against things like chipping and denting and typically a 20-year warranty on the life of your structure.
  • Certified metal carports. When you plan on adding a carport, part of the preparation involved is providing copies of the structure’s blueprint to your municipality for your building permit. Certified metal carports remove this phase of the planning process and don’t require additional blueprints or drawings. These carports are certified and rated to be particularly durable and permanent, withstanding winds up to 130 mph and extreme conditions like snow and ice.
  • Strength. Many options make a metal carport last longer under certain circumstances. Colder areas need a stronger roof to support heavy snowfall or even ice that may form. For hurricane prone locations, extra anchoring aids with stability in high winds. Thick steel carports last longer. Some manufacturers offer longer warranties. Any of these additions increase the cost, so buyers should pay attention to these costs.


  • How much does a metal carport cost?

Carports can be found for as cheap as $2,800 (12’ x 20’ regular style roof metal shed), but costs vary according to style, size, and extra additions with delivery and installation. The average cost range is $4,000 to $10,000, with an average cost of $7,000 for a 20’ x 20’ A-frame or boxed eave roof double car metal carport. Costs can be as high as $24,000 for a 24’ x 40’ vertical roof metal shed with closed ends.

  • How much does it cost to add a carport?

It costs $4,000 to $10,000 on average for a metal carport, with a national average of approximately $7,000. Steel carports are more expensive, costing $20 to $30 per sq. ft. compared to $10 to $15 per sq. ft. for aluminum.

  • How much does a double carport cost?

It costs $4,000 to $12,000 for installing a standard double carport measuring around 20’ x 20’ or 22’ x 22’. This includes the costs of preparing the property, transporting the unit, or installing on the site.

  • Do I need a permit for a portable carport?

Portable carports are not considered permanent. Therefore, you do not need a special permit for a portable carport. The only exception is if you are attaching it to an existing home, structure, or building on your property. A regular carport usually requires a building permit before you can construct one on your property.