Lift Storage Bed Trundle - Converts to Sofa for Tiny House Use

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Submitted by Ana White on Fri, 04/22/2016 - 11:12
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How to build a lift storage bed. This lift storage bed has springs that keep it open and help it close with more control. Converts to a sofa in a tiny house. Free plans by

Happiest of Friday to you today!  

Thank you for all the love on our loft system with bed and storage video and project last week for the Tiny House series we are doing right now.

Just in case you missed last week's video -

A big part of the functionality of this system in the tiny house is the sofa seating area.

By day, it's a very comfortable spot to lounge.  It's 18" tall, so standard seating height.

Then come night, it pulls out to become a real bed.  With a real mattress.  

And of course it lifts up for lots of storage underneath, assisted by a bed lift kit (we used this bed lift kit).

Here's the video on how we built it and use it -

Thanks so much for watching!  If you have a second, please do subscribe to be notified when we share new videos.

The plans follow.  Enjoy and have a great weekend!

XO Ana




Full size mattress, finished height is seating height


Shopping List

2 4x8 sheets 1/4" plywood for the bottoms 1 4x8 sheet 3/4" plywood 1 - 1x6 @ 8 feet long 2 - 1x8 @ 8 feet long 3 - 1x8 @ 6 feet long 5 - 2-1/2" caster wheels (we did three swivels and two locking) 3 - hinges Bed lift kit suitable for full size mattress Edge banding for finishing plywood edges

Common Materials
3/4 inch finish nails
1 1/4 inch finish nails
Cut List

2 - 1x8 @ 75" 3 - 1x8 @ 52-1/2" 2 - 1/4" plywood @ 54" x 37-1/2" 1 - 1x6 @ 75" 1 - 3/4" plywood @ 48" x 75"

Tape Measure
Speed Square
Safety Glasses
Hearing Protection
Circular Saw
Brad Nailer
Power Sander
Iron for Edge Banding


Step 1

Build the frame out of 1x8s. We choose to use 1x8s to get the right height when working with 6" mattress and caster wheels (ended up using 2-1/2" caster wheels) to fit inside the loft bed area and also opted for 1x material to keep weight down since this project will be used in a tiny house. You could use other materials here, wouldn't go less than a 1x6 (small storage cavity and not enough strength) unless you support underneath with additional caster wheels. You can build in a number of different ways. We used 3/4" pocket holes and 1-1/4" pocket hole screws, but you could also use screws but I don't recommend nails.

Step 2

Attach 1/4" plywood to the bottom with 3/4" nails or staples and glue. Use the plywood factory edges on outsides to help you square up the project as you attach it.

Step 3

Attach caster wheels to the base. You may need to add blocking attached to the 1x8 boards to support the caster wheels.

Step 4

The 1x6 board can be nailed and glued or screwed on. Keep outside edges flush.

Step 5

Step 6

Follow directions on bed lift kit for attaching the springs to the plywood and bed cavity. We adjusted ours quite a bit to get it just right.



Mon, 04/25/2016 - 13:56

I love your Tiny House... No that you've actually lived in it, if you were to modify your Tiny House to fit a bathroom and a shower, where would you suggest putting it? Any ideas?


- Hugh


Wed, 01/04/2017 - 19:57

Anna, thank you so much for your site and plan sharing.  We will be building the lift bed and storage bed at our lake house (it has vaulted cieling] what kind of wood do you use?  Pine? I just want to make sure it is sturdy.  What about your outdoor furniture?  Is it a harder wood? 

Love all the plans I will post pic when we are done. 


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