Zoning can be interesting. We added 16 feet to the back of our house, to 24 feet from the rear property, but zoning allows you to go within 10 feet. However my mom's neighbor wanted to add on to their house and go within 5 feet of the property line. There is a process for getting exemptions to zoning laws, so those are not set in stone. All three adjoining neighbors had to approve. My mom had me vote for her, because she knew she would never be selling the house in her lifetime, and it will only impact me. The family had one of their daughter's write an essay with the application explaining why she and her sister "needed this family room to have a place to play". It made me laugh. Previous owners had kids I played with and I was in that house frequently over the years, and it HAD a family room back then. It had been added onto 4 TIMES since I had been there, and this would be the fifth. Not sure where the family room went as it expanded from 2,000 square feet to 3,300 square feet but I did not object and it now has ANOTHER family room and is 3,800 square feet. Looking now on zillow, it appears what had been the family room had become the casual dining area with a breakfast area. Oh, it was next to the formal dining room.