My kittens are born in my bedroom but when they start to run and jump, they need more space. I also have another large room just for the cat beside my bedroom.  When the kittens are older and litter trained, they are moved to our living room/kitchen area where they share our daily activities with their mom. Everywhere in the home, they have a lot of place to run, cat trees and many fun toys.

 

Males and females in heat are very messy, they spray (and have a strong smell!).  They are territorial so they must have their own place. This is why I keep my males and females in heat in a separate building close to my home. There are 3 studs room and a larger room for females. All the walls, floor and doors are made of laminated pannels, all is easy to clean and sealed. They have heat, recessed lights, air purifier, 3 large windows, a couch, many cat trees and wheels and a ventilation system.   I also have a hall, perfect to keep the cats from escaping when we go in and out. The hall also has a huge sink to clean the litter boxes and shelves for all the pet carriers and cat stuff.