The old list of professional model builders for hire was outdated and impossible to maintain, so it has been removed. We are in the process of rebuilding it.
Meanwhile, if you are in the USA and are looking to have a model built for you, I suggest visiting the International Plastic Modeler's Society/ USA (IPMS/USA) website to locate a chapter near you. Each listing has a "chapter ontact" who you may eMail to see if there is someone in your local area who will build what you want.
If you are a professional builder anywhere in the world and wish to be listed here, please drop me a line to learn what I need from you to make that happen.