“Feeling cramped but love your Atlanta neighborhood? Explore 12+ home addition types – from budget-friendly garage conversions ($100-250/sq ft) to stunning second-story additions ($350-600+/sq ft). Our comprehensive guide includes real costs, pros/cons, and expert insights from 22 years building in Alpharetta, Roswell, Johns Creek, and throughout metro Atlanta. Whether you need a home office, in-law suite, or family room expansion, discover the perfect addition type for your needs and budget.