Are there companies that specialize in this?

Find an investor-friendly agent who specializes in multi-family and who has access to all of the MLS data in your area.

Cleveland ain't special.

But if I want an inspection period, and I write it in the special provisions, AND the other party agrees and signs, then can he or the state later say that since there was no payment made, the contract could not have allowed for an inspection period, OR say that inspection periods are not allowed even if added to the contract?

It is not like land is in some high demand where it sells quickly and dealing with land is a very specialized field since there are thousands of issues that need to be ironed out before a lot sells e.g. nobody wants to buy a lot where you can't build what you want on the lot because the last blue butterfly in the world lives in a bush on the lot, or the lot is on an earthquake fault, or there is the county will not let you build a structure on the lot more than 10 feet tall, or you cannot cut down a 100-year old tree right where you want your building to go and the list goes on and on.

The best set up is the one with flexible hollow rods with special attachements powered by air compressor, that way less chance of dryer duct to get disconnected in the wall or ceiling.

Universal vouchers, and special needs kids get more money. 

I'm waiting on a reply back from Proper Insurance which specializes in STR but I have a feeling they're going to balk at a treehouse. 

Thus far the only thing I have specialized in is drinking the free coffee....I am very eager to build connections and network my way into becoming a successful acquisitions specialist.

So, they do and should require special permits by a municipality to build.