This document outlines 5 important points to clarify when choosing an interior designer: 1) Ask to see their certification to ensure they have proper training. 2) Discuss whether they can work in your preferred design style. 3) Inquire about how they will track and communicate the project's progress. 4) Determine what level of involvement is expected from you as the client. 5) Find out if they only source supplies intended for trade professionals or if retail options are also considered.