What to ask potential turn key companies

[Rob Z.]

So this is not really a debate on whether tk is for you or not but more along the lines of what would you ask these companies? Heres what I have so far:

How long have you been in business?
How many customers are repeat buyers?
Whats the average turnover rate ( for a specific area)?
Whats the average ROI per year (I get this is very subjective)?
Is property management in house?

These are just a few, feel free to chime in and add some.