A level in sacred architecture represents knowledge out of the norm. All religions are based on worshipping a cosmic order, which means that a key aspect of religion is trying to recreate this order, something we often try to do in dreams.
A stupa, for instance, a memorial instigated by buddha himself, is essentially made up of the following five levels: a) a square base b) a hemispherical dome c) a conical spire d) a crescent moon e) a circular disc each of these components is rich in spiritual significance and is identified with one of the five cosmic elements of creation. These are, from the base up, earth, water, fire, air and space.
[1]Psychological / emotional perspective: There are many levels of awareness that are available to us in the dream state. It will depend on our stage of advancement at which level we choose to interpret our dreams. As a child grows in maturity he will go through different ways of understanding his world, commensurate with his particular stage of growth, which will be reflected in dreams. These levels of understanding resonate even in adulthood.
[2]Material aspects: Usually a level surface suggests ease and comfort.
Dreaming of a road being level would indicate our way ahead is fairly straightforward.
A level crossing suggests that we are approaching a barrier or blockage that requires our attention. We may not yet have enough information to take avoiding action.
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