Can you verify their disability and if so, how? 

I have read online that under the Department of Housing and Urban Development that they have laws in place for people with "mental and physical disabilities" as far as renting is concerned.

They disabled the alarm once they got inside, but not before it had gone off and triggered a zillion calls and messages to us, the police, the alarm company dispatch and the alarm company owner who had installed our device personally. 

Now his butt is on fire LOL.Even more red flags.Let me guess, he wants to be paid in cash or if by check the check is made out to his name not a business, so he has no business entity, no insurance, no workers comp waiver for himself and certainly none for anyone if he brings a helper on your property.Hope none of this ever comes back to bite you, like he falls off his ladder painting your house, breaks his back, becomes permanently disabled, somebody gets in his ear about how he can get his doctors fees and and a fat cash settlement paid since you're responsible for it, and that's just the beginning of the issues that could come up.

Two special rights extended to disable 1) the right to make reasonable modifications to dwelling to enable them to live there comfortably, and 2) the responsibility of management to make reasonable accommodations.

Many of the foreclosed properties in this area are being rented / lease-optioned / resold to young professionals and families.Not much multi-family here, though, to the OP's point.If you're talking about Joliet from the river / downtown on east, then yes - you're looking at different strategies in those areas.That said, one of the couples in my investing group based in Downers Grove has hooked up with a VA program for providing housing for homeless veterans near where they get treatment for physical and other disabilities or near public transit they can use to get around.

If you charge anything labeled with the word PET, it would not apply to the service animal of a person with a qualified disability.

Introduction The Fair Housing Act (or Act) prohibits discrimination in the sale, rental, or financing of dwellings and in other housing-related activities on the basis of race, color, religion, sex, disability, familial status or national origin.1 HUD’s Office of General Counsel issues this guidance concerning how the Fair Housing Act applies to the use of criminal history by providers or operators of housing and real-estate related transactions.

Veterans also fit this bill (disabled or not) and I see that MA doesn't allow discrimination against Vets either.

For another, don't overlook the value of benefits - health, vacation disability, sick leave, employer Social security match (7.5% or so), holidays.2008 took down a lot of landlords, especially the highly leveraged ones trying to reach your 25 homes level.