A home can gather memories of particular people, routines, freedoms, and restrictions in one recognizable place. Why it appears may depend on which period of your life it belongs to and what is different now. Returning happily, being locked out, and discovering an unfamiliar room each change the question; a house does not automatically stand for your whole self.
A kitchen may bring together memories of feeding yourself, caring for others, shared conversation, work, or household demands. Why it appears depends on the task and company: cooking with someone you miss is different from preparing an impossible meal for impatient guests. Identify the particular kitchen before treating it as an image of family or nourishment.
A building's roof is a salient part of the dream: it provides cover, needs attention, changes condition, or becomes a place from which the dreamer views or moves through the scene.
A road may be a familiar route or a way for the dream to organize getting somewhere. The important details are your destination, who chooses the route, and what happens when the way changes. A crossroads can raise a question about choice when you actually have to decide; an ordinary commute may simply continue a recent or repeated journey.
A train dream may draw on commuting, an expected trip, or a remembered departure. Trains can make timing, shared direction, and decisions about boarding or leaving concrete within the scene. Missing a train while panicked differs from choosing to let it go with relief; being carried to the wrong station differs from enjoying a journey with someone.
School may return because it supplies a familiar setting for learning, being evaluated, belonging to a group, or following other people's rules. It may also be a direct memory of teachers, friends, or a particular place. Being unprepared for a test, enjoying a lesson, and looking for an old friend should lead to different questions about why the setting matters now.
Moving on foot is a central action in the dream, with the pace, route, destination, companions, or difficulty of walking shaping what happens.