Siding planning involves the wall surface, trim and the connections around windows, doors and the roof. A visual preference is a useful starting point; the condition of the existing exterior determines the detailed scope.
Begin with the reason for the change.
Tell John whether you are considering an appearance update, concerned about an area of damage, or planning siding alongside another exterior project. Point out what you have noticed and which sides of the home are involved.
See how the profile and trim work together.
Try horizontal lap, board and batten or a shingle look on the rotatable house. Compare colors and trim widths. These are visual profiles, not a promise of a specific siding material or manufacturer; the actual product needs its own discussion.
Look closely at the connections.
Ask about removal, preparation, underlying repairs, and the details around openings and roof intersections. If windows or doors are also changing, discuss the sequence so the surrounding work is accounted for from the beginning.