semidetached

/ˌsɛmidɪˈtætʃt/
adjective
  1. Describing a house that is joined to another house on one side by a shared wall.
    • The semidetached homes on our street all have similar brick fronts.
    • They bought a semidetached house with a small garden in the suburbs.
    • Living in a semidetached house means you share a wall with your neighbor.