Quoted from MrBally:Don't forget the upfront payment you need to give them as a non-interest bearing loan and how the split will be used to pay it back wording in the "agreement/contract"......
Oh and don't forget a little something for the building inspectors. Then there's long term costs such as waste disposal. I don't know if you're familiar with who runs that business but I assure you it's not the boyscouts.