The housing provided by David Dale was constructed to a high standard for the time, solidly built from local sandstone with Scotch slate roofs. The houses were built in the tenement style in order to maximise the accommodation that could be fitted into the narrow site and each 'house' consisted of a single room in which an entire family would live. As the population of the village declined, houses were expanded to two or more rooms and the basement rooms (notoriously damp) ceased to be used altogether instead being used as wash-houses.
You can find out more about the living conditions in the village in the Living in New Lanark publication.
Strangely, New Lanark has no street names, rather the individual blocks of houses were named. With the exception of Caithness Row, named after the Highlanders who lived there, and Braxfield Row, named after Braxfield Estate, the other housing blocks have very self-explanatory names! Double Row is the widest of the tenement blocks, Long Row the longest, 'Wee' (meaning 'small' or 'little' in Scots) the smallest, New Buildings the last constructed and Nursery Buildings the block which accommodated David Dale's orphan pauper apprentices.
