Active leaks are treated as same-day where daylight and weather allow. Everything else is normally within the week.
Water runs along battens and rafters before it shows. The entry point is usually uphill of the stain and often several feet away, which is why a survey covers the attic as well as the roof.
Diagnosis yes, most permanent repairs no. A temporary cover goes on first and the permanent fix follows.
Yes, and it is written down. Nothing is charged before the scope is agreed.
Cambria Heights itself, plus St. Albans, Queens Village, Laurelton, Springfield Gardens, Rosedale and Elmont across the Nassau line.
Tell us what you are seeing and roughly when it started.