Tag:building=semidetached_house
 building = semidetached_house
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A house that shares a common wall with another on one side. 
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| Group: buildings |
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A house that is attached to another house on one side.
Also known as a duplex in some parts of the world. In other parts of the world the term duplex is used for multi-unit buildings with units on different floors rather than side-by-side - multiple units on different levels is not building=semidetached_house.
Note that duplex buildings sometimes mapped as one building way or two connected building ways. The tag building=semidetached_house is in use for both. So the current use of this tag is not clearly differentiating between them.
Connected rows of more than two houses should be tagged as building=terrace or building=house, depending on the mapping.
In the UK, 2 houses with adjoining garages which also connect to the houses are known as 'link-detached' houses. It is hard to tell, even on-the-ground and especially from aerial imagery, whether a garage has been converted to living space, potentially making it a semi.
Alternate tagging
Some mappers prefer to map this as building=house + house=semi-detached.
Photos
See also
- building=terrace - The outline of a linear row of residential dwellings, each of which normally has its own entrance, which form a terrace ("row-house" or "townhouse" in North American English).
- building=house - A single dwelling unit, usually inhabited by one family