semi-detached
US /ˌsem.i.dɪˈtætʃt/
UK /ˌsem.i.dɪˈtætʃt/

1.
a house joined to another house on one side only by a common wall
:
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They bought a lovely semi-detached house in the suburbs.
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Living in a semi-detached property offers more privacy than an apartment.
1.
a house joined to another house on one side only by a common wall
:
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Many families prefer to live in a semi-detached rather than a terraced house.