I hope your fee accommodates some of the interference this client is apparently giving you in getting the job done he hired you for in the first place. If you have a clear and defensible clause in your professional services contract addressing additional services, that may come in handy also in this case.
You have left how examples of how the client is apparently sabotaging the project so it is hard to speculate from here.
I’m T&M, so I’m not too worried about overextending. Its just frustrating to see a great property with so much potential in the hands of someone who cant see the forest through the trees.
The owner is insisting on up-zoning his own property and refuses to get a broker or someone qualified to do a proforma..insists on going it alone and its become clear that no one wants to work with him. He might make upwards of a few mill on his property if he just let others lead him.
Just do what he wants providing it’s legal and is not a messed up plan which you will be liable for. If he pays the bills either quit after the next pay check or do what he wants. You can lead a horse to water but you can’t make em drink. Our job is to please the client even if the plan is weird and off key………………make em happy.