In some neighborhoods it would be. In others it would not. If you have a Realtor working on your side in the transaction they could provide you with info on comperable sales in the area. If not, an appraiser could tell you the value of the home for a fee. If you are financing with a mortgage that would be part of the mortgage process. You should also have an inspection done and possibly a survey. If there is not a Realtor involved in the transaction, I would recommend a real estate attorney be involved for the purchase contract. You will also need to have title work done to ensure the title to the home is free and clear. Please contact me if you have additional questions.