Based on my goal of having 12 chickens, I divided the building in half–the coop is 8′x8′ and the storage room/work room is the same size. We designed a wall framed with 2x4s and filled in with chicken wire. We built a door that opens into the storage room that allows easy access to the coop.
We put brackets that hold a 6″ piece of plywood inside both doors into the coop to keep the pine shavings inside the coop. The boards can be removed to clean out the deep litter for cleaning the coop.
Using scrap pieces of plywood, we put up interior walls in the coop to keep the chickens from pecking the insulation. I painted it with white, high gloss kitchen/bathroom enamel paint.
We nailed down sheet vinyl flooring on the coop side. We also put it on the walls surrounding the roost. When I shovel aside the deep litter pine shavings, the floor still looks like new. I put 2 large landscaping tubs underneath the roost filled with pine shavings to catch the chicken poop which is heaviest under the roost. I turn the shavings and add new until it is time to empty the tubs and add the contents to the compost pile.
Using heavy-duty shelf brackets, I put up shelving in the storage room. I used plywood scraps for shelves. I put up some pegboard using a large piece I had left over from another project. I put the shelves high enough to use as a work surface and place 5 gallon buckets and plastic garbage cans under them in which I store chicken food, diatomaceous earth, pine shavings, and water.
Tip: We added latches on the inside of our doors so we can close them while we are inside the building or run and keep the chickens from making an escape.
Tip: We added 2x4s across the ceiling even though they are not needed structurally. We use the space above the “ceiling” to store a variety of supplies and equipment.