The NRHDP guidelines indicate that forested areas are to remain intact, developments on steep slopes are to be controlled, and residential settlements are to be regulated. The previous paragraph states what are the NRHDP guidelines on the use of private lands. Hillside slopes are very attractive sites for high-income households that place a premium value on the scenic views of the valleys of the Northern Range, although the engineering costs are quite exorbitant. Moreover, the increasing pressure of limited land space, which is common in small and island states, has pushed built development onto the hillsides of the Northern Range.