Dispute with real estate property repair price

I own a property along with my ex wife appraised at 180 thousand. My ex wife made a verbal agreement with my daughter and son in law to let them have the property after she moves out within a month. My son in law is a contractor who works for his father who is also a contractor. The son in law and his father checked out the property and noticed a lot of repairs needed due to mold damage. They asked me to come a view the property and was told that the repairs could be extensive. Just a few days ago they asked me to come again and noticed most of the house was gutted and unlivable and then was given their repair estimates and that I might be able to get at most 15 thousand from the sale of the house after all repairs are done. Their cost of repairs would be over 200 thousand. There was no contract but was told one would be drawn up after I agreed. I did not agree for obvious reasons. What are my options?