Zoning change from single family to multifamily with deed restrictions
I live in Ohio and am fighting a zoning change from Single Family to multifamily. The developer first applied for a Planned unit development overlay to put condos on single family lots. They withdrew that proposal and now want to rezone the property to multifamily with deed restrictions. They have a purchase agreement on the property. The property currently has extensive deed restrictions that restrict anything but single family use. My question is, can they apply new deed restrictions when they already exist. And is it legal for the mayor and Planning Commission from my city to negotiate deed restrictions. Is this considered conditional or contractual zoning?