There are several ways to obtain a valuation of a residential or investment property. The first thing you can do is look online at similar properties for sale in your area. This will give you a rough idea of how much yours is worth. Next, contact a local estate agent and ask them to come and do a valuation. They have expert knowledge and will be able to look at the condition of your property for a more accurate valuation. It’s not an exact science but it will give you a good idea of how much you can sell it for.