The name 'ivy' is used loosely enough to cause expensive planting mistakes. Boston ivy and common ivy are different plants, and neither should be chosen for a wall solely because a photograph shows attractive foliage.
Get a botanical identification and understand how that plant attaches. Then inspect the wall, joints, paintwork and access points before planting against it.
Plan for maintenance access
Leave a way to reach windows, gutters, vents and the top of the growth. A plant that looks manageable at ground level may become difficult to control once it reaches a roofline.
The condition of the building matters. If masonry is damaged or you are unsure whether a surface is suitable, obtain appropriate building advice rather than treating the climber as a repair for cracks.
Consider seasonal appearance too. Ask whether the identified plant retains its leaves locally and how it normally grows in that position. A bare winter wall may be acceptable or may defeat the reason for planting it. Decide before roots and stems become established, when changing your mind is still a comparatively small job.
Related reading: Boston Ivy vs Common Ivy: Leaves, Climbing and Growth.