To protect the camera cables from being cut by intruders, providers will always attempt to hide the cables. Pros will do their best to include this service as part of their initial estimate but additional costs may apply pending an onsite inspection to understand the material and build of your home. They will use conduit or wire molding when it is not cost effective or possible to hide the cables in the walls or attic.
You can expect a single installer who is able to service a home up to two stories in height using a standard two-section ladder for access to the camera mounting positions. The pro will run and conceal the video cables you supply between the camera and the DVR unit. The camera will require a local power socket and final camera mounting position will be governed by available viewing angles and safe ladder access.