A 30×40 metal building provides 1,200 square feet of space, making it ideal for home workshops, agricultural use and even retail stores.

If you’re considering a 30×40 metal building for your project, you may be wondering how much it will cost.

30×40 Metal Building Price Range

Like any other building project, it can be difficult to get a precise estimate of the cost due to customizations. So many factors impact the cost of a project, but we can look at estimates and real-world examples to get an idea of how much this size building will cost.

In general, 30×40 metal buildings can cost anywhere from $9,000 to $14,000 ($8-$11 per square foot) for just the building kit itself.

For a turnkey solution, you can expect to pay anywhere from $20,000 to $26,000 ($15-$19 per square foot).

After doing some research, we found a few real-world examples of 30×40 buildings and their estimated costs from large vendors.

As you can imagine, the prices were all over the place:

  • Metal Garage Central Kit starting at $23,155
  • Carport Central Kit starting at $15,155
  • eBay Basic building kit starting at $9,200
  • Sentry Steel Turnkey estimated cost of $42,296.69

Even when comparing kits for DIY builds, base costs vary significantly. Prices will also depend on location,  the gauge of metal used, the height, etc.. So you can expect to spend more than the starting price.

This also emphasizes why you should get more than one or two estimates on your structure.

Of course, the cost will also depend on how simple or complicated you want the structure to be.

Although this size is not a common choice for a residential home, if you did decide to go that route, you can expect to spend more because of electrical, plumbing, HVAC and, potentially, additional insulation.

A 30×40 garage would be significantly less expensive because you may only need a simple building.

How is a 30×40 Metal Building Price Calculated?

When calculating the cost of any metal building project, there are several factors that will impact the overall price. There are also other costs in addition to the building itself that will increase the total cost of the project.

Wind and Snow Load

One significant factor that will affect the cost of the building itself is wind and snow load. Different locations will have different requirements.

If you live in a colder climate that’s prone to heavy snowfall or an area that frequently gets high winds, you will need a stronger structure that can stand up to these elements. Naturally, this additional strength will come at a higher cost.


Another major factor that will impact the cost of your 30×40 building is the options that you choose, such as:

  • Windows
  • Doors
  • Trim
  • Stucco
  • Siding
  • Additional insulation options

The more complicated the building, the more expensive it will be.

Site Work

In addition to the building itself, you must consider the cost of preparing the site for the structure. If you have a flat, level yard and you plan to use your building as a workshop or garage, you may not need much in the way of site work.

However, grading, tree removal and other additional site work will add to the overall cost of your project.


Typically, a 30×40 metal building is placed on top of a concrete slab. A 30×40 concrete slab that’s 6 inches thick can cost between $8,000 and $12,500. Keep in mind that this cost is for a general-purpose building, such as a garage. If you were to build a home or commercial structure, the cost of the foundation may be higher.


Finally, you must consider the cost to construct the building. Costs for construction will vary greatly depending on your location, site work and the complexity of your building.

In many cases, the company that’s supplying your metal building can put you in touch with reliable, experienced contractors who can complete your project.

Common Sizes & Pricing