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30×40 Gable Barn Plans

These 30×40 Gable Barn Plans blend traditional good looks with modern ease of construction. This barn design has 2′ overhangs and features a strong roof to resist heavy snow. This barn design also features a unique king post style hay hood.

This barn design includes a 10′ wide center aisle and two 10′ wide outside aisles. In this configuration you have many options available to you. The most obvious would be to use the 10×10 areas between posts in the outside aisles for medium size horse stalls. Then you will end up with a total of 8 10×10 stalls, three on each side of the center aisle.

With a full loft you can enjoy a total of 1200 square feet of space above that regular pole barn designs just don’t offer. Use it to store hay, or an out of the weather place to hide out after chores. Sometimes you just want to get away from everything, shut off that cell phone and lay back in the hay. Doesn’t that sound relaxing? The sweet smell of the hay and the sound of the gentle blowing of the horses interrupted by the cackling of that Rhode island red hen announcing to the world the arrival of a freshly lain egg.

These are full construction plans that you can build this barn from. Plus you will also get included with these plans my ebook titled How to Build Your Post and Beam Barn. The book takes you through the whole construction process step by step, including information about securing local timbers, finding the right contractors, and preparing your site.

Click the Download Now button and get started on your new ‘old barn.’

A Letter from Andy, who bought these plans..


Thanks. Here’s the short version of how I decided to build this barn.

I found Barngeek web site in the midst of my research to find “the barn” . After retiring in December 2013 I ordered plans for the 30 x 40 gable barn. It took me a while to really commit to getting started as I continued to toy with other designs. Finally, I decided, “what the heck, I can do this.” So, I prepped the rough site that I had originally built with a bulldozer in 2011. I leveled and smoothed the fill dirt with my tractor in July and augured out pier supports. By early August I was ready for concrete and we poured the slab on August 7th.

In the mean while I had shopped for a source of timbers and found a small sawmill in East Texas using Craigslist. I hired a guy to haul it to my ranch and had most of the bent lumber in place by early September. I built the bents pretty much alone during October and November. Then, after lots of hand wringing I decided to seek “professional help” for standing up the bents and putting on the roof. I figured the solo approach clearly was not an option and I doubted that I had enough skilled friends who happened to have a week or so free to help me stand things up. That was the best decision I have made on this project so far. The crew is decking the roof today and it should be in the dry by tonight.

Here are some pictures.

It has been a great project and I am very pleased with my barn.
Thanks for designing this plan. — Andy

Below is are sample low resolution pictures of the plans. You will get a high resolution pdf file with your purchase.

Click the Download Button Below to Get these Plans!

Solid Steel Plate Timber Brackets

We have put together all the hardware you need to build this majestic post and beam barn! All the plates, brackets, and timber screws are there.

Learn more details and how to get your DIY Hardware Kit...

Hardware Kit for this barn includes….

40 T plates

20 Plus (+) plates

20 U brackets

20 Strap Plates

250 ct 3/8 x 8″ RSS screws

750 ct 5/16 x 5 1/8″ RSS screws

750 ct 5/16 x 4″ RSS screws


Request a quote by emailing info@barngeek.com with your name, address, and the barn you are interested in.

Hardware Pricing


4 hole strap plates

(2 needed for each connection)
$44.99 per piece Bare Steel 
$52.99 per piece Powder Coated Black

6 hole strap plates

(2 needed for each connection)
$44.99 per piece Bare Steel
$52.99 per piece Powder Coated Black

T plates

(2 needed for each connection)
$54.99 per piece Bare Steel
$62.99 per piece Powder Coated Black

Plus plates

(2 needed for each connection)
$64.99 per piece Bare Steel
$72.99 per piece Powder Coated Black

U brackets
$54.99 per piece Bare Steel
$62.99 per piece Powder Coated Black

2-Stage U brackets
$64.99 per piece Bare Steel
$72.99 per piece Powder Coated Black

*Due to supply chain issues we no longer include bolts/nuts with plates or brackets.  We recommend using local sources, like TSC (tractor supply) or online sources like Bolt Depot.

*shipping is not included

We also offer RSS Screws:
3/8" x 8" RSS (Timbers)
250 ct $349
5/16 x 5 1/8" RSS (Purlins)
250 ct $149
5/16" x 4" RSS (Girts)
250 ct $129