An inspection is not one service. What you need depends on why you are asking. A property in steady use needs the routine annual check. A sale or a fuel conversion calls for the level that puts a camera down the flue. A permit or an open violation needs a report written against code. A fireplace that smokes needs a diagnosis, and a suspected leak needs a test that proves the flue holds.
This section covers every one of those, each on its own page, so you can go straight to the one that matches your situation. Whichever you book, the outcome is the same: certified inspectors, findings measured rather than guessed, and written documentation you can hand to an insurer, a buyer, a board, or a building department.