Just what exactly is your rationale for not including the space? Is the ceiling too low? Are they too narrow to use for a chair or other furniture? Without knowing why you chose not to include it, how can anyone possibly give a reasonable answer to your question?I have a realtor who wants me to add the square footage of 2 2nd floor dormers (36 sq. ft.) to the measured GLA of the house. I didn't think this should be added in..... need opinions.