| Do you own the building that you are planning this renovation in? If not, you need to speak with the building owner first. If so, you need to check with your town's planning board to see what, if any, codes are in place. Most municipalities use the International Building Codes Guidebook. They will require you to submit your drawings for approval. If you are not familiar with this kind of process or work, your best bet would be to ask a friend or neighbor if they can recommend a good designer/architect and pay for their expertise. It will save you a lot of headaches in the long run.
Good luck to you. | 
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