This is our hen's Summer Palace. It's 4x12 with a 4x4 "house" on the end. It's a bit dishevelled right now because we moved the hen's to their winter quarters in November. I built it about 5 years ago, before I knew the extent of the predators around here.
We let them out into a 10x10 run during the day. That lasted until I noticed hawks spending a lot of time in the nearby oak tree, then I put a net over it.
I didn't put a locking latch on the laying box until the day I opened it to gather eggs and found a raccoon snoozing in the nest.
I initially had 2"x4" wire fencing around the frame and open on the bottom, which was OK until weasels came up out of the woods and killed every bird. We had 4 hens and a rooster. I miss having a rooster, but they're a pain in the ass. I wrapped every inch of the frame in 1/2" hardware cloth, and they've been secure for 3 years now.
I have a feeder that holds 30 lbs of feed and I have a watering system that holds 5 gallons of water, so daily maintenance is just letting them out in the morning, gathering eggs, and putting them away at night.
This is the winter residence. They have space inside the storage barn that I lock them in every night. We open a hatch and let them outside to get some sun every day. We had a sick hen last summer and I put her in the winter residence to get her away from the others. I forgot to drop the door on the hatch one night and a weasel walked in and killed her.
Raising chickens has been an interesting hobby, and I do get kind of attached to the birds, but it's no way to save money on the price of eggs.