You can use any duration you desire. 

A majority of the populous had some reliance on the social welfare system in some form or fashion for some duration, be it gov. spending on infrastructure projects to create jobs, food allocation systems etc..

I am thinking about going through seler financing with a property, I feel it would be advantageous for my situation. I know it varies for every property, but is it typically the same as having a conventional mortgage,...

The tenants then still manage to accumulate more of the stuff month after month for the duration of their stubborn clinging grasp upon your property until you are finally able to get them out.

Yes, I know it's "their house" for the duration of the lease, but it really isn't their house as we have responsibility for the big bills and repairs and liability matters and dealing with the damage they cause.

So if an investor were to purchase an SFH in one of these mixed use OZs, could they run a Day Care in it for the duration of the investment, fulfilling the “new business or trade” requirement and then try to exit after 10 years, marketing it as a rehabbed SFH?

How much better is tenant satisfaction (and average duration) if they get clear and immediate response to their maintenance requests?

If you do go with a two year lease, I'd either adjust the rent to be a bit higher for the duration or make an auto adjustment after year 1 to be at least a 3% increase.  

Ideally I’d be able to input certain criteria (% or $ down payment, interest rate, loan duration, management expenses, taxes, etc) all in an effort to quickly see what certain, listed properties in a given area would cash flow at if purchased and rented.I would love to find a service where I could:- Target specific neighborhoods, address ranges, or zip codes.- Have it pull listing data from some sort of online listing service (MLS, Realtor, Zillow, etc…)- Input general, high level expense #’s- Pull comparable rent #’s from the immediate area All the services or tools I’ve seen this far are for one property at a time.

The way in which QE was conducted, the amount which was given and the duration of the program was a bad move.