Materials:four 2x6s
ten 5/4x6x8 decking
four 4x4 posts
four 1x6s for railing
6 sheets of 1/2" plywood
twenty 2x4s
paint
12 joist hangers for 2x6
4 bags of quick-set concrete
clamps
corrugated plastic
Tools:
miter box
circular saw
reciprocating saw
jigsaw
hammer and nails or nail gun
level
chainsaw
router with roundover bit
Tips/Benefits:
Using the perimeter board to help brace the posts saves several steps. It levels the posts, ensures proper post spacing and saves pulling additional bracing off later.
When building a tree house or fort, be sure to follow local building codes. Most localities consider play equipment a deck as far as codes go, so consider the floor joist size, railing spacing and hardware such as joist hangers.
For young children, it's best to not have any working doors or windows in a playhouse. This allows parents to see in all the time to supervise and protects little fingers from getting pinched.
Clear corrugated plastic roofing is a great choice for playhouses. It lets light in, keeps the rain out and is fairly inexpensive.
Steps:
1. Measure for a 4x8 platform, marking the four corners. Dig holes in the corners for the 4x4 posts.