What happens if the scope of work changes in a contract?

It doesn't sould like there is anything "illegal"; however, if the scope of the work has changed, you need to prepare and secure approval of a change order reflecting the change in the scope of work and any increase (or decrease) in price as a result.For example, if you bid included $500 to remove carpeting, but it will cost $1,000 to remove laminate, your change order should indicate that instead of removing existing carpet, you will now be removing existing laminate and that the price for your services will increase $500. You should postpone your work until the change order has been signed and approved by the owner.  I strongly recommend not accepting a verbal approval, email, or text message, and instead require an authorized signature on a change order.This is a common process in construction work.