I have been to a few myself but there is a lot of smoking mirrors in the majority of them. 

 ( outside )  Sure they light up  and smoke a bit but in about an hour the sludge is gone .

Especially if you’re going with rental grade supplies.

I offered his full asking price but in addition to my "cash offer" I also offered to pain the lien, to hire movers for him, provide moving supplies, provide a 10x20 storage paid for 3 months.

It gives me a good idea when I'm ready to do rehabs with regards to market expectations and market supply.2.

In a hot market this just means it's harder to find deals because the supply is lower then the demand. 

We are in the last days of the due diligence period for a great house where, unfortunately, the owners smoked inside for about 12 years.

As those additional units are absorbed, supply will catch demand, eventually.

Also decide on a pet / smoking / guest policy.

The kind  of renter who won’t pay 3$ for a new smoke detector battery or a swap out a light bulb .my  black lab will leave our cool air conditioned house to go lay in the hot sun out on the deck !