An extension can change an existing camera view
For an Eltham CCTV enquiry, mention building work, a new gate or altered parking arrangements. These changes can affect a view even when the camera itself has not moved. Describe what you need to see now and what has become difficult to review on the existing system.
For a new installation, give each camera a task. Seeing a person at the door and observing movement across a garden approach are different requirements. Discuss those outcomes before deciding the camera quantity or relying on a headline resolution figure.
Plan routes and mounting positions
Explain the access available for cabling and where recording equipment could be located. If decorating or building work is planned, include the timing. Relevant restrictions on external equipment should be checked for the actual address before positions are agreed.
Think about the view at night and with ordinary obstructions present. Lighting, open doors and parked vehicles may affect the useful image. If you are unsure what is causing a current problem, describe the circumstances rather than choosing replacement equipment yourself.
Check operation, not just installation
Agree who controls access to live views and recordings. Ask about storage, remote viewing and what depends on the internet connection or a subscription. At handover, practise searching for a recording and exporting a clip. Where the view extends into shared or neighbouring space, review the relevant ICO guidance and consider the boundary deliberately. Your quotation should explain equipment and installation work in enough detail to compare the complete proposal.
Further information: ICO guidance for home CCTV · ICO guidance for organisations