I understand the rate is competitive on the assumable, but having $300k liquid, you might as well do a lower downpayment and Buy down the rate. 

I understand I will need to pull a permit to add shower area in the third bathroom but would a permit be required for the three additional rooms, especially given I will not be adding any new sq ft to the property?

I am like understand 70% of it.

Landlords can enter a tenant's property for a variety of reasons, including: Making repairs or replacements Responding to a tenant's request Removing unauthorized window coverings Preventing waste of utilities Changing filters, testing, or replacing smoke detector batteries Inspections Helping with an emergency inside the unit Posting a notice of eviction"Research your state laws because some of your comments indicate a lack of understanding of the landlord/tenant laws where you are operating (like threatening the tenants to keep the security deposit if they don't respond to you, I doubt that is actually a valid reason to keep their deposit, or evicting for late payments, or charging the tenants for your warranty repairs because you missed your 11 month inspection window which was your responsibility, and it looks like your lease says you can charge up to 18% interest for unpaid fees, is that actually legal?).

For your question, as far as I understand, the city of Binghamton doesn't allow STRs, but a lot of people do them anyway.

However, I also understand that lower housing cost may saturate the rental market. 

There are different things to know and understand.

I'm currently researching the market, trying to get an understanding as to where these different areas are located in the cities.Any indication is welcome!

I'm understanding now that the winter is just not a good time to have an open unit.

Or maybe we can do that I'm just too incompetent with technology to understand how to do it?