A few of my must haves and are in my coop, are:
Concrete floor under coop so nothing can dig in.
Vinal or linolieum on wooden coop floor.
Shower stall material up all walls four feet, entire wall behind perch is covered.
(for easy cleanup)
Clean out tray under entire perch area and more. Accessable from outside of coop for easy cleaning.
Nest boxes located on outside of coop, (more space inside for chickens and egg accessable from outside of coop.
Windows on all sides and vents with shutters for cold weather or winter. Lined with hardware cloth.
Tall enough so I can comfortably work inside if necessary and for cleaning.
Electric, lights and water to coop.
Wall mounted feeders.
Nothing sitting on coop floor, everything built in at least 16 inches off floor.
Coop chicken door, fully operated from outside of coop, to open and be closed without entering coop.
an attic fan installed for air circulation. (hot calif. summers)
There is probably more, but these things were must haves for me, dealing with just the coop.
Now for my enjoyment, Our coop is built in so I have access to a portion of the barn, and the coop without any outside exposure. I will have a working sink hot and cold water, Hot water heater already installed in barn. Along with fans for summer. Table and work area, storage, all cycloned in with gates on three sides for easy access to other areas.
This area is not used for other animals, I use the opposite portion of barn for gardening supplies etc. Thus the need for sinks and water, electricity. So the chickens benefit as well.
Outside the coop, will be a covered run of 12x 24, sunked 2x12's with hardware cloth attached at bottom edge and taken two feet outside of pen all around base, then covered and or backfilled with removed soil. Hardware cloth on sides as well, height six to seven foot, roofing will be slanted for water runoff.
another 90'x16' yard covered in poultry flight netting.
That is my must haves and most of it done, remainder in progress. Chicks are three weeks old tomorrow.
Dilly
I forgot most important aspect, phone in already. CD player and television will be added to work area. I spend so much time out there, why not. The babies love the noise already so why not.