Bring your contractor prior to making your offer. A buyer saw one of my listings today + brought his contractor with him to get an idea of how much money would be needed to renovate the house. The amount of money needed to renovate the house must be in line with how much you want to offer on the house. You don't want to spend all your money on the purchase without having the money necessary to renovate + update the property. An experienced Realtor can help guide you to make an informed decision. An inspector will also check on other areas such as the structural soundness of the house, the electrical, plumbing + any environmental issues, to give you a better understanding on the potential value on the property of interest.
If you need help, contact me anytime.