I had a small conservatory built onto the back of my house, my clients use the side gate, and it’s tucked behind my utility room where I mix colour and store tints and the toilet is assessable from this room without going into the main house, It’s about 10ft by 7ft. The full length mirrors I made with hidden shelves behind for products, I have two styling stations with a floor cupboard between, my chair have backs that move back so I use the same chair at the back wash this saved the most space as backwashes with fix chairs are very bulky. They were quite expensive but worth every penny. I have an air conditioning system which blows warm air in the winter and cold in the summer so a perfect temperature all round. It has worked out perfectly for my clients and myself as I can go to them when the unexpected happens. Occasionally my daughter will do a client and it definitely to small for two people. When I hang up my scissors and retire it will be an asset on the house. You should be able to claim most of it back on expenses from your tax. I have never looked back love every minute as it’s like seeing old friends everyday, the perfect job.