Home lifts solve a different problem
A stairlift carries a seated person along the staircase. A home lift moves vertically between floors and can often carry a wheelchair user without a transfer. That difference is important when mobility is limited.
Space matters at both levels
The lift needs a suitable position on the ground floor and a clear landing point above. Furniture can sometimes be rearranged, but structural openings, joists, ceilings and services all have to be considered.
Ask what building work is included
Some quotations focus on the lift equipment and installation. Check separately for structural work, electrical supply, decorating, flooring and making good. A cheaper lift quote is not necessarily the cheaper finished job.
Think about everyday use
Look at door width, internal dimensions, controls, how the doors open and whether another person or mobility aid can travel with the user if needed. Try not to judge the lift only by how unobtrusive it looks.
Plan for servicing and future changes
Ask about servicing, call-out arrangements, emergency lowering and what happens during a power cut. It is also worth asking what is involved if the lift is removed in future.

