The voucher is technically a HUD voucher that was issued by a local "public housing agency" (PHA).  

During a foreclosure situation there is a redemption period for the person being foreclosed on, perhaps your friend is being hired during this period when the property is technically in limbo.

What I want to protect myself from is setting the start date to 10/1 but having them move in on 9/23 and having 7 days where they are basically living in my property under the terms of a contract that technically don't start until 10/1. 

I can certainly see the attraction of putting less down and using the first-time homebuyer option, especially as you only get to use it once (though I think you might be able to use it once every 5 years if you haven't owned for several years - there are some technicalities but basically the easy answer is that it's a one time use).If you put less down now, that leaves you more down payment to use on a second property (either now or in the future).But I would caution you to make sure the #s work OK on this first property, if you go with the low-down, high-leverage option.

Technically you could also assign the assignment (a double assignment), but I've never done that and you would need to check with your title agent on that one.Now whenever I am selling to a wholesaler, I always make sure they understand that I fully expect THEM to close on the property whether they find a buyer or not.

She arranged to have, at no cost to me, a stair lift put in so she no longer had to climb the stairs.Part of your research should include talking to their case worker and finding out if any organizations, fed, state, local charities, etc. that will help with or completely fund the handicap upgrades.The elder rental market is growing and a great niche.

But much like the relationships of the people living in a house hold this is very difficult to enforce across the board but the law is technically the law. 

I can say I have done this and have not been called on it in the past, but it is something they technically have the right to due if they run a title report and see the ownership name has changed (even if it is technically you who owns it just in your LLC).

Find an investor succeeding in your niche and get to know them well.

Hopefully you found a niche where my cynicism left an opening.