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.



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.


Wed, 07/08/2020 - 13:52

Yes @mattstriker you are right. It's happened to me building the first sofa (not the sectional) and now I change the 28 1/2" for 29 1/2" and it's work perfect for the sectional part. @Ana White need to update the plans or make a comment to confirm this issue.

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!


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.


Fri, 06/19/2020 - 23:13

I have seen her state that she wanted to keep it simple for beginners to be able to build it, but that you could use pocket holes if desired. The one arm sectional piece that goes with it does call for two pocket holes.


Tue, 06/02/2020 - 16:04

I just made the couch and table - I cannot find cushions anywhere that fit the couch. I'm looking for three that are 24 x 27 - can anyone make some suggestions?
amazon, target, home depot, lowes...all don't have the size I need. thanks.


Sun, 06/07/2020 - 10:26

I am a VERY beginner wood DIY builder and this project was super simple, easy and very clear with directions. My son and I completed the building in 5 hours and that was because I measured 5X and cut once! I used Valspar Black Midnight wood treatment so that I could still see the grain. Great time with my son and I saved mucho dinero $$$$$$$ since something like this at a place like "Clay Shack" without naming specific brands would have been out of my budget for now. THANKS SO MUCH for the plans and easy to follow diagrams! The next project is the outdoor outdoor Bar Table.