The issue of hospital planning has taken a central position in increasing hospital performance. Applied hospital planning methods are found to be misaligned with hospital environments in existing research. Thus, it is relevant to increase the understanding of hospital environment variables in order to improve applied hospital planning methods. In this paper, we identify and describe the hospital environment and applied planning methods from an environment variables perspective through an in-depth case study of three Danish hospital environments and their corresponding adaptive planning frameworks. The results include suggestions for further research on improving the match between identified environment variables and the corresponding planning methods.