2x4 Outdoor Sofa

Submitted by Ana White on Sat, 03/16/2019 - 13:11
| Print this plan

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.



Sun, 09/29/2019 - 10:32

Does anybody have a feedback on the comfort of having the seat completely flat and the back completely vertical?  I feel that most couches have a slight angle to both the seat and the back...  Obviously that makes construction more difficult, but if I'm going to spend time/money on a project I want to make sure it's comfy.



Sun, 01/12/2020 - 09:24

Hello, I want to build this but with a slant back.  Has anyone tried this?  I made the simple outdoor furniture (loveseat and two chairs) many years ago and I love the slanted back.  Should I adjust the depth of the overall plan and add a cleat to attach vertical boards to create a slanted back?  Any recommendations are appreciated!


Wed, 03/25/2020 - 07:10

Why do I need to buy 10ft length's?

Can I get away with 8th lengths?

My local store only carries 8ft and 12ft long boards.


Wed, 04/01/2020 - 09:39

I have 24.75 cushions, should I build this to 26.25” instead of 25.5”?