2x4 Outdoor Sofa

Submitted by Ana White on Sat, 03/16/2019 - 13:11
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Build your own outdoor sofa with just 11 2x4s.  Ana White plans include step by step diagrams and shopping and cut list.

We also have a plans to convert this sofa to an outdoor sectional, a matching outdoor coffee table plan, and outdoor wood finishing secrets.

outdoor sofa sectional made from 2x4s with blue cushions
outdoor sofa stained chocolate brown with white cushions and matching coffee table

Build your own outdoor sofa!  You'll just need some 2x4s and screws!  

Turn your outdoor sofa into a sectional with these plans:

We also share our outdoor wood finishing secrets in this post.

dimensions diagram for outdoor sofa
Dimensions shown above. Recommend: Build to suit cushions


Shopping List

11 - 2x4x10’ (prefer cedar boards)

150 - 2-1/2” to 3" long, self-tapping exterior decking screws  (#8, #9 or #10 will all work) 

Cut List

RECOMMEND: Build to suit cushions.  

9 - 2x4 @ 72”  (or cushion width x times 3)

13 - 2x4 @ 25-1/2” (or cushion depth plus 1-1/2")

2 - 2x4 @ 28-1/2” (or cushion depth plus 4-1/2")

Tape Measure
Speed Square
Miter Saw


Step 1

Cut the seat framing boards with compound miter saw or similar.

Screw together with self tapping screws.

Step 2

Now for the arms.

Cut the boards.

Attach longer 2x4 to two of the shorter 2x4s with screws.

Step 3

Screw together with screws.

Step 4

Screw together with screws, also attach to board from step 3.

Step 5

Step 6

Attach seat boards to top of seat frame with 2-3/4" screws.

Step 7

Screw back piece at an angle into the arms with 2-3/4" screws.  You can also use pocket holes.

Step 8

Some builders add a middle row to the back/sides to help keep cushions in line.

Help Improve This Plan

We apologize if there was an error in this plan. Please help us out and report any errors here.



Thu, 05/14/2020 - 10:13

Hi there. Just building this for our garden.
Having an issue with the arms. The 28 1/2” cut seems to be an inch too short for the frame and to get the 25 1/2” support in also.
As 25 1/2”+ 2”x 2 for both legs is 29 1/2”. Does this make sense? Has anyone else had this issue please?


Fri, 06/19/2020 - 23:10

You may have figured it out by now. A 2 X 4 board is not actually 2 inches depth. It's 1 1/2 inches. So, the two 1/2 inch differences account for the 1 inch you are asking about.

william ndungu

Sat, 05/16/2020 - 02:42

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Joel Brown 1055

Mon, 05/18/2020 - 05:25

Hi Ana, I notice a lot of the time in the project you’re drilling into the end grain. Does this have much impact on how robust the whole project is? Would it be better to use pocket holes?


Fri, 05/29/2020 - 13:30

Nice project. I still have to sand and stain. I changed the 2x4 backrest and added another 2x4. In the process of getting cushions. Thank you!


Sat, 05/30/2020 - 20:54

I have been looking the net for relax seat plans. I love the manner in which you don't go all moviestar planet app on us and bring it down to nuts and bolts. I want to do this. Much obliged! Love your blog.


Tue, 06/02/2020 - 11:40

Looks nice and I'm planning to build it, and probably the sectional and table as well as soon as I get done with some things that I "must do" before I get to the "want to do" list. I was curious why you used regular wood screws on the butt joints, screwing into end grain, when you so often talk about pocket screws in that kind of application. I'd appreciate your insight.