Model # sierra_1220

Internet #202689271

Best Barns Sierra 12 ft. x 20 ft. Wood Garage Kit without Floor

Best Barns

Sierra 12 ft. x 20 ft. Wood Garage Kit without Floor

  • High sidewalls provide more space for shelving and storage
  • Purchase separately the style of garage door to match your home
  • Add optional windows and walk-in door to suit your needs
$317500 /each
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Frequently Bought Together

Product Overview

The Sierra wood garage kit is the perfect single car garage. The Sierra is designed with high headroom and an 8 ft. x 7 ft. garage door opening; you purchase locally to match the style of your home, making this perfect for your vehicle, storage or work area. The Sierra garage kit comes with 24 in. O.C. 2 x 4 framing and L. P. (Louisiana Pacific) Smart side exterior grade pre-primed paneling ready to paint the color of your choice. The Sturdy-Built Truss System is designed for a 40 lb. snow load and 90 MPH. wind load. Check with your local permit authority before placing you order. Building is shipped directly to you via curbside delivery. Building is shown with optional windows. Floor is not included. Shingles and garage door purchased separately by homeowner.

  • Assembled dimension: 144 in. W x 240 in. D x 135 in. H
  • Select grade pre-cut white pine trim
  • Sturdy-built engineered truss system provides for 90 MPH wind loads and 40 lb. snow load
  • Premium LP smart side paneling grooved 8 in. O.C. treated to resist fungal decay and insect infestation carries a 50-year limited warranty, siding is primed ready to paint
  • 7 ft. - 5 in. high wall height, 10 ft. - 7 in. peak height
  • Attractive front gable overhang protects from the elements
  • 24 in. O.C. wall construction
  • All required nails, hardware, glue are provided along with detailed easy to follow step-by-step instructions
  • 25-year limited warranty
  • Free curbside delivery included
  • Satisfaction guaranteed
  • Garage door not included, requires 9 in. low headroom track both purchased locally by homeowner
  • Click to find out more about buying outdoor storage sheds

Info & Guides

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Approximate Depth (ft.)
Approximate Width (ft.)
Assembled Depth (in.)
240 in
Assembled Height (in.)
135 in
Assembled Width (in.)
144 in
Door Opening Height (In.)
Door Opening Width (In.)
Door Opening Width (ft.)
Exact Width x Depth
12 ft x 20 ft
Sidewall Height (in.)


Assembly Required
Color Family
Floor Options
Without Floor
Maximum Roof Load (lb./ sq. ft.)
Maximum Wind Resistance (mph)
Number of Doors
Number of Windows
Product Weight (lb.)
Roof Color Family
Roof Material
Roof Pitch
Roof Shape
Shed Door Type
Shed Features
No additional features
Shed Style
Siding Color Family
Storage Capacity (cu. ft.)

Warranty / Certifications

Manufacturer Warranty
25 Year Warranty

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Customer Questions & Answers

Is there a color option with this model?

Asked by: keith
Keith, The siding is primed ready to paint. The homeowner purchased paint locally to suit their needs. Richard Best Barns
Answered by: Best Barns Support
Date published: 2016-08-10

Does this include Windows?

Asked by: Mario
The Sierra garage kit is shown with optional windows. Floor is not included. Shingles and garage door purchased separately by homeowner. Richard Best Barns
Answered by: Best Barns Support
Date published: 2016-06-24

Could you extend this models height to add a room above the garage?

I am looking to build a garage with a room above it and am wondering if this structure would support a room that would be framed above it that would add another 7 feet in height. Obviously the roof would just be finished above the room that's added.
Asked by: slidersn
No, you can not extend this models height to add a room above the garage.
Answered by: CommunityAnswer
Date published: 2016-05-18

What are the differences between the Sierra and the Greenbriar models?

I know the Greenbriar comes with out siding. I was wondering if there are other (structural) differences.
Asked by: SteveJ
The difference is that the Greenbriar model does not have windows.
Answered by: CommunityAnswer
Date published: 2015-10-01
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Customer Reviews

Sierra 12 ft. x 20 ft. Wood Garage Kit without Floor is rated 4.8 out of 5 by 4.
Rated 5 out of 5 by from PROS: Value, Time Saved, Quality, Customer Service, Versatility. After lots of research, I concl... PROS: Value, Time Saved, Quality, Customer Service, Versatility. After lots of research, I concluded that this was the absolute BEST value I could find for a structure this size. Having everything being very precisely pre-cut saved me loads of time/stress. Also, this was definitely a much higher quality of lumber than I could have personally pulled off the shelf somewhere myself: VERY nice. Then the company showed great care in their customer service every time I interacted with them. Also important to note: the fact that it didn't come with a floor was a bonus, because I could begin construction myself while waiting for the rest to arrive. Then the fact that it didn't come with doors/windows was even more convenient to me because I wanted the flexibility to choose my own size/style/type, which turned out very different than most would expect from this kit. It may be a standard "kit", but I guarantee that no one else's garage/shed will ever look like I wanted mine to turn out: my own personal craft studio. So overall I would highly recommend this kit! Add in Home Depot's financing options and occasional sales and you can't possibly find a better deal. CONS: But there are always cons to keep in mind.... The main one being the shipping company that this company chose to utilize. They lost one of my pallets; another customer in the next state chose to keep it instead of returning it, which delayed my own build by at least 2 weeks while they sent another from across the country. Then when the 2nd pallet arrived, the shipping company had no means to unload something that size anyways. If it hadn't been for my good country neighbors with tractors to save the day, I would have been unloading that pallet off the truck piece by miserable piece. So expect their shipping company to totally ruin your plans; be prepared for anything! Start asking yourself now: who will loan you their tractor to get that shed unloaded? Then as for the product itself, the directions were easy enough to follow, however, there are some things that were omitted that experienced builders will know, but beginners will NOT, so beware if you've never built anything this big. The directions may be TOO simple. For example, you'll have to find your own solid system for squaring and stabilizing trusses for a building of this magnitude or you will go through a living NIGHTMARE trying to get those pre-cut pieces of plywood to line up properly and square by the time you get to the other end of the roof. One line that says "keep the trusses square/plumb" will NOT be enough to save the beginner. I recommend turning to Youtube tutorials on adding braces. Also, if you happen to receive a warped rafter (which I did), DON'T place it in a critical position for needing to line up perfectly with that pre-cut plywood; place it in between critical spots so that it becomes irrelevant. Seriously, It took 3 tries before our roof came anywhere near being square/plumb. Then you also better know roofing or else (as we did) go through your own crash course on how to get shingles on a roof this tall without killing yourself. This is no quick/easy undertaking. But hey: pros versus cons? This shed is still top-notch and TOTALLY worth it! Just a learning experience, like most good things in life... But I wouldn't take it back for anything!
Date published: 2016-12-27
Rated 4 out of 5 by from The price, quality, & instructions great... Garage kit is very thorough, quality of material is excellent, toll free number to call manufacturer! Very helpful..
Date published: 2013-10-22
Rated 5 out of 5 by from All around great value The assembly instructions were easy to follow and there was no guessing. All cuts were precise and accurate.
Date published: 2014-11-16
Rated 5 out of 5 by from Garage Project Surprised by the quality of the wood. Every piece was cut to spec. Garage went up completely as the plans indicated. Very pleased with end result.
Date published: 2015-10-18
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