They have a blacklist which they're going to make public later this year but in the meantime a good mortgage broker can advise you on the specific buildings. 

On our most recent purchase, we bought a home with an assumable loan which allowed us to reduce our monthly mortgage payment by over $1,100 because we assumed a loan with a 3.08% rate instead of taking out a new loan (at that time) with a 7.5% rate! 

Some grants are deferred payments, or will be an additional amount added on to your mortgage. 

Of course they will do a mortgage but you will need the 25% down payment. 

@Matt M AntonioFinding a lender who understands and specializes in working with self-employed individuals, especially in the context of Non-QM (Non-Qualified Mortgage) products, can be crucial in your situation.

We follow proper protocols.Ease of maintenance:Should be easy to maintain.

But outside of programs that are out there that doesn't do a whole ton for your terms of your mortgage. 

You want to invest just to have a place to live and potentially offsetting your mortgage payment by renting out the vacated rooms or having x amount of cashflow in the future?

Make sure to properly screen your tenants at all times.

I have a cousin in Florida that is moving and would love to come to an agreed price on their place but just take over the mortgage instead of securing my own loan as I am looking for it as an investment and would be required to do 20% down (which I would not have).