As stated in a previous article, sprinkler requirements under the 2014 Code are not retroactive for any existing building, except for those classified as high-rise office buildings. But major alterations, such as the one you have described, and building use changes can trigger a sprinkler requirement in altered areas.
Without knowing all the specific details of your project, one possible exception that could apply to your case is under BC 903.2.8:
"An automatic sprinkler system shall not be required in detached one- and two-family dwellings and multiple single-family dwellings (townhouses), provided that such structures are not more than three stories above grade plane in height and have separate means of egress."
"Grade plane" here refers to a reference plane representing the level of the curb measured at the center of the front of the building. Because you say your home is only two above-ground floors, it may fall under this exception.
For a more comprehensive review of your specific case, feel free to contact the experts at Outsource Consultants for direct consultation
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