With just a few 2 x 4s, some drywall, spackle, paint and a closet door, you can turn your home from a two bedroom and a den into a three bedroom house, instantly increasing your home's value over the course of a day.
Build a simple square or rectangular frame from the 2 x 4s by pre-drilling holes in the ends of them and attaching them together using wood screws.
Once you determine the size of the bed you want to build, calculate all the wood you are going to need for the bed frame using 2 x 4s.
Measure the width of the inside of the bed frame and cut three or four 2 x 4s to that measurement to be used as support braces.
Cut the 2 x 4s to size or have them cut to size where you purchase them.