Housing
Game Menu -> Housing -> My Houses

Your house essentially defines how much space you have for your Pixpets, pumpkins, plants and decorative items. Houses are divided into different House Parts. The bigger the house, the more house parts it has. Each house part can be up to 10x10 (100 tiles) big. House parts are divided into two categories: Inside and Outside which defines what items can be placed in them. Outside house parts like the Front Yard and Backyard hold Pumpkin Slots. The number of Plant Slots is defined by the house type and can vary.

The number of Pixpets each house part can hold depends on the house part type and size. Some house parts cannot hold any Pixpets at all, like the Attic or Basement. Also, some houses have house parts which need to be bought additionally.

You can have multiple houses, but only one of them can be inhabited at a time. To move into a different house, you need to empty your current house completely first. You have two options to buy new houses: Either buy a Brand-New House (Game Menu -> Housing -> Buy New House) or go to the House Market (Game Menu -> Housing -> House Market). However, the number of brand new houses is limited and some may not be available.

You can also sell any vacant house on the house market. Putting a house onto the market will cost you a 10% fee of the current house value. Choose a fixed price and the house can stay on the market for 30 days at max. If your house doesn't get sold it will go back to your house inventory.

It is also possible to abandon a house. In this case it will be deleted.