Custom 30×40 Metal Building
Custom 30×40 Metal Building at Alan’s Factory Outlet
Instant Transparent Pricing
At Alan’s, we have nothing to hide. Get instant pricing online. No contact details required. No unwanted sales calls.
Fast Delivery and Installation
Alan’s Factory Outlet metal buildings and carports are delivered and installed saving you time. Delivery and installation is free.
Certified Metal Buildings
Get a 1-year craftsmanship warranty plus a 20-year rust-through warranty on optional 12-gauge framing and most roof panels.
Risk-Free Guarantee
We guarantee a 100% refund of your deposit until the day your building is delivered. We don’t know anyone who will match our guarantee.
100,000+ Customers and Counting
Alan’s Factory Outlet has a 4.8 Overall Star Rating based on more than 21,000 reviews on Shopper Approved, an independent website.
3D experience was easy, the prices are excellent. If I need anything else I will be buying from them.
2nd product purchased from Alans. Quick, easy, professional installers and the best prices in the market!
Wow!! Quick and easy! Only took a few minutes for me to pick exactly what I wanted! Awesome experience!!
Amazing. The site is great, the options are great, the prices are fair, and it was all super easy. I don't know how any of the companies that offer prefab carports have any business at all with you guys in the market. As soon as I stumbled on your site, it was clear who I was going to buy from.
One of the easiest buying experiences ever! A high quality carport made to my specifications and super fast delivery and set up. Highly recommend!
Loved how easy to create my design. Seems easy enough and have paid my deposit so we'll see how it goes from here.
Simple process. I love the 3d builder and the fact you can see the price as you build. Sure beats calling around for quotes!
The website and ordering process is very impressive. Very intuitive and user friendly. I shopped many other vendors and settled on Alan's based upon user experience and pricing.
The site is easy to use, gives a you price break down in every step to help customize the size, color, and overall design while staying in your budget.
The whole process of finding a building and making modifications was so easy. That we were able to actually see what we were getting was most helpful, as it really helps you make decisions on colors and placement of doors and windows. Excellent shopping experience!
Thank you for making my purchase easy & seamless. I look forward to having my building installed.
The site was easy to navigate and when I spoke to Christy for more information she was extremely helpful
The website makes customizing and ordering very easy. The reviews I read are very positive and I'm looking to have that same experience.
The shopping experience was quick and easy. I've placed my order and am waiting excitedly for my new carport to arrive.
This is my second or third building from Alan's. I am very pleased with the cost and quality of my previous purchases.
smooth transaction and was installed just as smoothly. we are so happy with this purchase that we will be ordering another carport for our business from Alans' again this year soon.
Each time I called for the last two months, the representatives all had the same answers to my questions. They were very knowledgeable & easy to understand.
It was so easy to customize the perfect carport to meet our needs, will probably purchase another for our yard equipment.
Very easy to complele the order. The 3D Builder is awesome. It allows you to see just how your design would look.
returning customer – love the one I have – great service and website, and a real human! is always available to help – thanks so much for that
A 30×40 metal building is the perfect size for a large garage, workshop, storage shed, and more. Since steel is a durable and weather-resistant material, these structures require very little upkeep. Our 30×40 metal building prices are the lowest you’ll find and include installation.
Customizable Features
Design your 30×40 metal building to fit your needs. The following are available features:
- Roof style
- Color of roof, trim, siding, and doors
- Garage doors
- Walk-in doors
- Windows
- Insulation
- Lean-to additions
How Much Is a 30×40 Metal Building?

The average 30×40 metal building prices starts around $11,000, though prices will vary depending on the roof style and height.
For example, a 30×40 steel building with a vertical roof, 9-foot legs, and a 9×8 garage door starts at $11,005, while a structure with 12-foot legs and two 10×10 garage doors would start at $13,325. Additional garage doors will increase the price, as well as taller sides.
We also offer a wide range of add-on features and accessories, such as windows and walk-in doors, for our metal buildings that will add to the total price.
Concrete Slab Cost
The average cost of concrete slab is $8 per square feet. For a 30×40 concrete slab, which is 1,200 square feet, the approximate cost will be $9,600. Local prices of concrete vary depending on the cost of labor in your area. You can use our concrete pad size calculator to determine the best size for your needs.
*Please note that we do not provide concrete work with our metal building kits. You will need to hire a local contractor for your foundation.
Color Options
While traditional metal buildings were generally one gray color, modern versions have more options. Ours come in a variety of colors, where you can change the look of the roof, trim, siding, and garage door.
Uses for 30×40 Metal Buildings
The greatest thing about a metal building is its versatile use. New metal buildings can function as a garage and easily add value to your home. They also make great workshops, storage buildings, and barns. Our metal 30×40 garage kits are custom-made to fit your specifications and available in 16 different colors.
Installation
After ordering a metal building kit from us, we’ll deliver it to your home and install it for free. Installation can take anywhere from a half-day to two days, depending on the size of the building.
It’s important to prepare and level the ground beforehand to ensure proper installation. There should also be at least 3 feet of space around the desired area for workers to have room to install the building.

Frequently Asked Questions
It depends. The average cost to build a garage is $28,000, though you can buy a metal garage kit for half the price. The total costs of both, however, will vary by size, style, customizations, and other factors.
Yes. More often than not, metal buildings are half the cost of those made of wood. Since metal is more affordable than lumber, the material is a great investment for a large-scale, permanent building.
Design Your 30×40 Metal Building Today
Our 30×40 metal building costs include delivery and installation, ensuring the most affordable prices for our customers. All of our products are also backed by a one-year workmanship warranty from the date of installation.
Order and customize the perfect metal building within your budget using our tool below. For additional metal building ideas, check out our blog.
30×40 Metal Building Prices
Free Delivery and Installation in 21 States
