Pinpointing a cost estimate for an addition is really only possible with a consultation with a professional builder. However, on average, the cost for an addition could range anywhere from $250 to $500 and well above per square foot for a luxury home in the Cleveland area.
The per-square-foot cost really depends on the type of room or rooms being added. Due to the complexity, quality of finishes, and systems that go into a kitchen expansion or relocation, the cost per square foot will be much higher than adding space to a family room, for example.
The most efficient way to understand how much an addition will be is to contact a design-build firm that can learn about your design goals and give you an idea of what to expect. Other aspects will be factored in as well, such as the age of your home, its historical status, and any complications, like water damage, cracked foundation, and any past work that may not be up to code.