I will ask questions to gain as much information as I need about the service that is required, Pictures also help to diagnosis the problem.
Least Destructive Method Possible. Mostly techniques classified as Non Destructive Entry Techniques because rarely is a drill required to gain entry.
Yes I can give you a ballpark answer once I understand the service that is required, But the quote would be after I get information like: Have any modifications been made to the lock? Who made the lock? Model of lock (example: Maker: Kwikset Model information: Smart Code 909)?
Yes For residential services I will ask to see your ID to prove you live at the address. For commercial I will ask to see authorization from owner/operator or manager and also to see your ID. I will also identify myself with company ID which contains my company name, my name and a picture of me.