What is the difference between semi attached and detached homes in Alpharetta?

A semi-attached home in Alpharetta shares one party wall with a single neighboring unit, similar to a duplex or twin home, while a detached home stands entirely on its own with no shared walls. That shared wall can mean lower construction and maintenance costs and a smaller lot, but also less privacy and sometimes shared HOA obligations tied to the neighboring unit. Detached homes typically carry a price premium for the added privacy and larger lot that comes with standing alone.