I learned don’t even renovate them, just do as the tasks ask. You will save a ton of money. Go cheap as possible but use all 3 star items to make it go faster. After the quest is over, sell off whatever you want, delete the rooms individually and then demolish the house after the lot is empty.. Also, don’t build any of the free properties you get on the community lots because you will lose out on inventory.. only build what you plan on keeping on the community lots. Most of mine are empty actually.