Greenbriar 12×20 Wood Garage Shed Kit – ALL Pre-Cut

Sale price$335.16 Regular price$670.32
Save $335.16
4.7

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Our shed line from Best Barns now includes garage kit options. Add a single stall garage and lots of extra storage space to your backyard with our12×20 Greenbriar prepped for vinyl siding wood garage kit!The Greenbriar storage building kit provides a single car garage stall. The great low price, huge storage area,easy do it yourself assemblyand excellent looks make the Greenbriar storage garage a great choice!*vinyl siding provided by customer; match your home for a professional look!

Prepped for vinyl sidingmeans that the exterior walls will be covered with an oriented strand board (OSB). The customer will then apply any exterior siding of their choice purchased locally. Choices include wood siding, stucco, vinyl siding or any exterior grade siding. Most of our customers use this style shed kit to match the siding on their home.

  • 8’W x 7’H garage door area *garage door not included / provided by owner
  • 8′ 1″ tall side walls!
  • 24″ on center wall studs
  • Heavy duty roof system designed for a wind load of 120 mph and snow loads of up to 40 lbs. per square foot!
  • (pictured with 2 optional windows with shutters, cupola, garage door and gable window not included; add these and other options below!)

Heavy Duty Truss System:

  • 40 lbs per square foot snow load
  • 120 mph wind rating
  • Hurricane truss hangers included!
All required hardware included: door hinges, latch, hurricane straps for trusses, nails, glue for gussets and detailed instruction manual included.Paint, shingles, siding and roof edge are provided by owner / not included.
Look at all the headroom in this storage garage!




Optional Item

Wood floor is not included; Add a wood floor kit to your shed to give it a finished look!
Designed specifically for your new storage building. Adding a wood floor provides a dry storage area and raises the building above the ground protecting if from damaging moisture. Included in the floor kit are 4×4 treated runners, 2×4 treated joists (spaced 12″ on center), 3/4″ plywood flooring and nails. The material is not pre-cut and will require the customer to make simple straight cuts. The flooring package will be delivered before your shed by a local lumber dealer. They will call to make delivery arrangements and someone must be there to receive and sign.
Optional Item

Add an optional pre-cut treated wood ramp to your new storage building. Our wood ramp will line up perfectly with your floor kit. Having a ramp will make it easier to drive in and out.

Optional Item

Add optional windows to your garage kit. Our 18″x36″ windows are constructed of aluminum and come with decorative, paintable vinyl shutters for either side. Comes with lockable frames and screens to keep burglars and pests out.

Optional Item

Add an optional side entry door for easy access! Choose either a six panel or nine window steel door. Both door styles include the aluminum threshold and lock set. When selecting your door please choose which side you want the hinges on so we send you the correct door. Door opens swinging inside the garage.

Fast, tracked shipping

Most orders ship within 1-3 business days.

Secure checkout

All major cards accepted, protected checkout.

Warranty on every purchase

New and factory-reconditioned items are covered. See product details for warranty length.

Customer reviews

4.7 (9 reviews)
Write a review

Weatherproofed our tools through a whole winter with no issues. Instructions could be clearer but it wasn't hard to figure out. Would recommend to anyone considering the Greenbriar 12×20 Wood Garage Shed Kit – .

Julia Q.· March 31, 2026 Verified purchase

Weatherproofed our tools through a whole winter with no issues. A little pricier than I hoped but the quality justifies it.

Chloe A.· June 14, 2026 Verified purchase

Panels lined up better than I expected from the reviews I read.

Brian N.· June 28, 2026 Verified purchase

Sturdy once assembled and has stayed watertight through storms.

Ethan J.· August 7, 2026 Verified purchase

Assembly took a weekend but everything lined up well. Packaging was a little rough but the product itself is fine.

Ethan D.· March 7, 2026 Verified purchase

Couldn't be happier. Sturdy once assembled and has stayed watertight through storms. Would recommend to anyone considering the Greenbriar 12×20 Wood Garage Shed Kit – ALL Pre-Cut.

Karim O.· June 2, 2026 Verified purchase

Pretty happy with this. Assembly took a weekend but everything lined up well. Instructions could be clearer but it wasn't hard to figure out.

Michael G.· March 18, 2026 Verified purchase

Sturdy once assembled and has stayed watertight through storms. Instructions could be clearer but it wasn't hard to figure out.

Renata F.· March 10, 2026 Verified purchase

Assembly took a weekend but everything lined up well. Would recommend to anyone considering the Greenbriar 12×20 Wood Garage Shed Kit – ALL Pre-Cut.

Lucas Y.· March 25, 2026 Verified purchase

Fast, tracked shipping

Most orders ship within 1-3 business days.

Expert support

Questions about parts, fit, or warranty? We're here to help.

Warranty included

New and reconditioned items are covered by manufacturer warranty.

Secure checkout

All major cards and secure payment methods accepted.