There are developers in this area who will pay 95-100% of what you could get with a realtor, particularly if the home isn’t renovated and most of the value is in the land. Developers don’t like paying for improvements they are going to demolish. My old house was a total tear down / gut job; my realtor said they could get $900K for it, and a developer gave me $890K.
Generally speaking, the greater the value of your improvements, the less you are going to get from a developer. If someone is actually going to buy your property to live in it, get a realtor.