Mike, This may not be an issue for you, but keep in mind that coal and coal dust is acidic.

Sills are also caked with dust. 

@Julian Pilate-Hutcherson We work almost exclusively with OOS investors and it's a mixed bag...I sold 3 MF properties this month to folks that have never been to the state...and I have another set of clients that have been in the market for months and make routine visits to the city...I think it has a lot to do with comfort-level...truth told, we can leverage technology and get every possible detail on the table for review to make a pretty informed buy/pass decision...combined with an inspection and appraisal, there is really no need to be here in person looking at deals....

Your parents will need to hold the property for two years and you'll need to hold your replacement property for two years to let the dust and basis settle. 

Then deliver them in the old school money bags with the dollars signs stamped into the side

I have a mixed bag some properties in LLC and some not....

When the dust settles, you’ve added another rental that’s fully updated and ready to go for a long time, and you haven’t permanently changed your equity position in your existing rentals.

Currently my partner and I have acquired 45 units (just shy of a million in total real estate) in less than 2 years and we're building solid systems and allowing the dust to settle. 

Above all do not get the dust in your hvac vents and breath it daily for years.

Once this dust settles they will not resell for what you purchased it for so be mindful .