Real Estate is a place where player can buy apartments, houses, and also garages.
The real estate properties are scattered around the maps and can be cheap or really expensive. Real estate is first found in the first city you start out in. There will always be a real estate employee there to let you check out the house.
To buy a house you need to have the correct amount of money or you can trade and or sell your house. Once you have the money you can buy the house and keep it for good.