We recently had our 6th child and needed to rearrange our kids' rooms. We decided to put our 3 oldest girls together and wanted a triple bunk. We used the classic bunk plans, but increased the height to allow for a middle bunk. We wanted L-shaped to give each child some headroom. We used pine wood, common board and select pine. We finished it off with two coats of Behr interior latex paint/primer in one, satin finish. Finished dimensions--height from floor to base of bottom bunk, 10 in. from floor to top of top rail, 79.5 in.
$40 for paint
~$500 for tools--this was only our second build and our last build only required a drill.