Since I'm not an attorney and can't give legal advice, I did a little more digging and found the passage below.

If mold remediation is done by a handyman without air sampling or post-remediation testing, it can lead to issues during the sale.

Wynd detectors are usually good for air quality, their effectiveness specifically for detecting marijuana smoke can vary, as they aren’t designed solely for this purpose.

I think the expenses are light.If you want to achieve market rents, no central air is going to be an issue.

Affordability is about 1:3So yeah on the surface it looks like a big difference, but there's a lot of things not controlled for in the stats- There were a crazy amount of houses built in the years just after the war, so housing stock was easy to come by everywhere;- Homes had nowhere near the kind of features they have now - 2 car garages, dishwashers, OTC microwaves, W/D hookups, high efficiency windows, central heat & air conditioning, etc - all those doodads and niceties drive up the cost of housing;- Fewer mortgages were 30 year, so homeowners had to pay (relatively) higher monthly payments;- Rentals were almost exclusively apartments, so there was more supply for buyers;ETCI think these things tend to be more stories that make for good press but aren't really that grounded in reality overall.

Alternatively, you can offer more such as central air when the competition doesn't have it.Avoid areas with a lot of new rental deliveries.

Some won't but I would want that so they aren't pulling random #'s out of the air.

We're doing 30 and even 40 year fixed using 80% of AIR DNA to calc DSCR. 

Here in New York, it's kind of up in the air. 

I have a fully furnished home I want to put on Air BnB.