There are many arguments for and against the use of autonomous-agents in ambient intelligence and intelligent environments. Some researchers maintain that it is vital to restrict autonomy of agents so that users have complete control over the system; whereas, many others maintain that there is a greater benefit to be gained by employing autonomous-agents to take some of the work load off the user and increase user convenience. Both of these approaches have their distinct advantages but they are not suitable for all since people's opinions and concerns regarding autonomy are highly individual and can differ greatly from person to person. This work explores how it is possible to make intelligent environments more dynamic and personalisable by equipping them with adjustable autonomy, which allows the user to increase or decrease agent autonomy in order to find a comfortable sweet-spot between relinquishing/m gaining/losing convenience. This chapter discusses how adjustable autonomy can be achieved in intelligent environments, reports on a recent online survey conducted to gauge people's opinions of different levels of in intelligent environments, and discusses a user study for which an experimental adjustable autonomy enabled intelligent environment was developed. This work aims to raise awareness of the issues with using static (and extreme) levels of autonomy amongst researchers of intelligent environments and ambient intelligent environments.