I'm sorry to hear about Your situation. It is very wrong that such absurd situation can occur. House owned by one person but land by another, like house is something that can be moved to different location like car. Place to live must be a human right that cannot be taken away. We probably need another civil war and WW3 to change the system of society for better.
I also here asked help in form of 200 USD to purchase replacement computer. I will pay the money back as soon as I resume working. What ideas You have right now?
If having a place to live is a fundamental right than house builders necessarily can have no right abstain from offering you their services. I for one would like for everyone to have a decent place to live but not if the price is necessarily some form of slavery, which it is.