Fire ratings, STC ratings, sprinkler systems, air barrier testing, and costlier mechanical systems—much of it driven by regulatory changes—are all at all-time highs.

If so - could do 10 5-6 hour days each - we would try to get at least 1-2 stays completed at 1-2 nights each with air bnb bookings- if the seller is OK closing on the 19th but wants to stay a bit longer - could we do a 7 night stay for them after closing if they book direct with us? 

Personally, I'd be airing on the side of caution on this one if this were my client given the different uses (LTRs and STRs.

I recently retired from the Air Force and have five properties.

Quote from @Chris Watson: Well, I am not @Michael Baum and pale in comparison to his deals of the day, but this is one all RE owners can use12 Pack of MERV 8 Air Filters is $39.90 ($37.80 for military & veterans)  https://www.homedepot.com/p/HDX-12-in-x-12-in-x-1-in-Standar...Sizes available: 12x12, 12x20, 12x24, 14x14, 14x20, 14x24, 14x25, 16x20, 16x25, 20x20, & 20x25This is a year's supply. 

However the wording in the covenants is not very specific.

You could also add an ERV (but that gets pricey) to bring in outside air to that unit as well.

Growing out from my CT portfolio to MA specifically Pittsfield.

There is truly only 4 "lanes" in Real Estate Investing: - Deal Generators: this is your tried and true wholesalers, listing agents, those who specialize in finding a "deal" out of thin air. - Deal Builders: your flippers, value-add masters.

Any suggestions specific to the Fairborn (and Dayton broadly) area that could be pitfalls if not looked into?