how to build up a house?Follow

First, find an empty lot with an orange marker post on it. Click on that post and it will tell you how much the lot is.

Buy the lot if the price is right. Then, go to the central market of your map zone and their is a merchant in the center of the square.

Buy a cottage, house, villa or mansion deed, depending on how much you want to spend.

If you want to be able to sell stuff on a consignment merch, also buy a porch deed and consign merch.

Take all back to your lot. Drop house deed onto your lot marker (THE ORANGE ONE). After house builds, drop porch deed onto wall of house and then drop consign merch onto wall of house.