Hi there, Definitely it is a good time to have major renovation after staying for 20 years, then will make you feel like staying in a new house again. I'm glad that you like the design of our house as well. I do not have the experience staying inside while renovation is on, so couldn't help you much on that. Maybe others with such experience could advise? By imagining it, the whole house will be very dusty and dirty with the hacking and etc, since you mentioned overhaul. Besides, they will also put the renovation materials like cement, sand, etc. inside the house. Hope this helps. Cheers!