An inspection request should explain the decision you need to make. Routine maintenance, a property purchase, unexplained smoke and a suspected damaging event are different reasons to investigate. Give the inspector the known history and clearly mark unknowns. The inspection level should follow those circumstances rather than being selected as a simple good/better/best package.
Access and interpretation are as important as images. Ask which flue serves which appliance, how the inspector identifies locations in photographs and which building areas will be examined. An internal video can reveal useful conditions, but a video scan by itself does not describe the complete inspection scope. A report should distinguish what was observed from what the inspector suspects caused it.
A limitation needs an explanation of its consequence. 'Attic not accessed' is not automatically a defect and does not establish that concealed construction is acceptable. Ask whether the inaccessible area prevents the inspector from answering your original question. If further access is proposed, define the target area, authorization, cost assumptions and responsibility for restoring finishes.
Keep the report even if you hire another company for repairs. Findings, safety restrictions, recommended maintenance and optional upgrades should be distinguishable. A repair estimate can be attached to the report, but it should not replace it. Before accepting a major correction, request the evidence and the boundary of work so a second professional can assess the same facts.
Editorial comparison framework—not an installation specification or expert sign-off. Related specialist services can have narrower scopes than this category-level guidance.