@Ginger Winn If you're planning to put newer, used mobile homes on the land, you may need to check with the zoning department. They'll be able to tell you what you can and cannot do with the land.
Usually, older mobile homes get grandfathered into any new rules and regulations with the city and/or county. Though, if you want to make changes with newer mobile homes there may be some restrictions (i.e. age, condition, etc.). It's best to check with your local zoning department before making plans to move forward.
If you're able to bring newer, used mobile homes on the land without restrictions, then you just need to make sure the right infrastructure is in place. If utilities have been used on the land in the past, then it's just a matter of contacting the companies who provided these utility services and asking them your questions directly.
Personally, I've been in the mobile home investing niche since 2007. If you have any other questions, feel free to DM. Hope that helps!