ADUs are currently illegal in Raleigh but has been in and out of committees for years. Advocates see it as a solution to affordable housing. Other just see no issue with it as many cities in North Carolina allow them and have close to no (Durham having zero) complaints.
HUD has a report saying ADUs help low and moderate income people: Accessory Dwelling Units (ADUs) | HUD USER
ADUs might also help us gain some density which is good for transit: