I became very interested in the idea of living in a small house and wondered about the pros and cons. In December of 2018 I had the opportunity to move into a 10 foot by 14 foot tiny house. It was void of running water and inside bathroom.
I moved in with my Great Pyrenees and Australian Shepherd which added to the experience. I do have access to a shower and water and it does have electric.
It has been quite the experience. I enjoy it but if I was looking at something permanent it would be at least 16 feet by 32 feet. I think that would be a very doable size.
I admit it isn’t for everyone. I wouldn’t recommend two large dogs either. It’s easy to heat and cool but just a little cramped at times. I haven’t regretted moving in. I am glad I did it.