This article outlines the problems hampering the development of Historic Interiors Conservation. Historic Interiors conservation is a developing conservation discipline which as it impinges on boundaries of art and architectural history, building archaeology and material analysis risks being marginalised or ignored. As interiors are often intimate spaces for personal retreat which are subject continual change, are attempts to conserve them appropriate? A proposed methodology for the subject which has evolved from international discussions is outlined, which if adopted by commissioning clients, conservators and statutory bodies could improve standards of research and the conservation management of historic interiors.