I can pre-authorize an amount and if the expense is below that, the vendor can do the repairs without talking to me live4) Urgent maintenance issues - say a pipe breaks, or tenant is locked out.

When selecting roommates or tenants for coliving they must be flexible regarding tenants that you carefully vet in other terms, but gender is something that I've learned the hard way to not consider as a criteria.Let us know how it goes.  

Make sure it explicitly explains the process for termination if you are unhappy with their services, especially if they violate the terms of your agreement.3.

Of course the above 2 points can vary deal by deal based on the deal terms, but 99.99% of cases align with the above.

I need $33,500-$40,000 to complete the rehab including cost of permits, labor, and materials.

So, the terms of your lease should be catered to that, with very strict insurance terms, personal guarantees behind any company signing your lease, requirements that lessee handles all repairs and maintenance, additional security deposits, and I would go so far as requiring minimum review quality for the host, limits on quality of guests they can accept, etc.And to your point about Airbnb not doing background checks, you are right.  

U probably also have pre pay penalties etc etc. 

Is it usually this slow here in terms of replies?

check with a local attorney there are rules for filing liens of course anyone can file them but that does not mean they were filed legally.. in most states you have to give a PRE lien notice in writing and by certified mail.. you have time limits to file it.. so if they try to cloud your title they are taking a risk of slander of title. not that they have any money to pay if they lose but you can fire back with that if you need to.

It would be the underwriter that just needs to document the 6 month seasoning before closing in order to stay within the terms of Fannie/Freddie guidelines.