Start with the moments that matter. Where do you take video calls? Which rooms lose connection? Are the cameras, doorbell and television sharing the same connection? Write down the locations and symptoms before buying equipment.
Separate an internet service problem from a coverage problem. A slow connection beside the router and an unreliable connection at the far end of the house can have different causes. Compare what happens in both locations and at different times of day. A single speed test is a snapshot, not a complete diagnosis.
Look at the layout. Router placement, walls, floors, and the distance between access points affect how a network should be planned. Existing Ethernet wiring may create better options. Ask which rooms need dependable coverage and whether a wired connection is practical for your main workspace.
Make an inventory. Note the internet provider, router model, available Ethernet outlets and important connected devices. You do not need to share passwords in an enquiry form. Keep credentials for the actual service appointment.
Agree the scope before work. A useful proposal describes the areas being addressed, the equipment being considered, any cabling work, and how the result will be checked. It should also identify anything that depends on your internet provider or a third-party product.