Just would like to share my experience with state demolition.
The quote was for 14k include asbestos removal (been told driveway contain asbestos)
Signed up and near completion of the removal got a call from the onsite supervisor from state demo said they've found "large amount" of asbestos which will cost additional 6k, on top of that the comments were along the line of "you need to tell me now to remove it or not, otherwise the removal truck will be gone and to remove these asbestos will needs to be inspected will cost you over 15k".
Thoughts at that time were "I will agree to it and I can be onsite within 15 minutes to inspect how much asbestos are actually there".
Surprising, arrived in less than 15 minutes everything was all gone.
Saw the photos taken which at most would be 1sqm worth of asbestos.
I then called the company spoken to the "boss" whom then threaten to take all the rubbish back and dump at the site if the payments are not received with 24 hours.
Please, if you decided to go with state demo, think twice. I'm not discounting they do a good job and probably most customers won't have the problems with asbestos.