I think you're right to seek legal advice. (That advice should be funded by the estate, hopefully the other assets have not been distributed.) Your siblings will have to sign off on the sale, and you'll need to be stain-free.
Surely you're under no obligation as executor to improve the property before sale. What happens if you spend estate funds to improve it and the value doesn't increase like they anticipate? Then you may be open to charges of malfeasance.
Surely you're under no obligation as executor to improve the property before sale. What happens if you spend estate funds to improve it and the value doesn't increase like they anticipate? Then you may be open to charges of malfeasance.