Today most of the families are opting for open kitchen rather than the stereotyped concept that the kitchen should be within the four walls.
Listen to what architect Sally Weston of Weston Hewitson Architects has to say: the way to get your kitchen extended is to merge all the smaller areas into one whole. That tinier space might be anything: the mudroom, office, pantry, food preparation area and so on.
Lot many ways can actually help in the creation of open kitchen. Say, the extension of one wall, pushing off the ceiling slightly to certain height.
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