That early, railway workers tended to live by the railway -- at least in England that was true.
http://www.imagesofengland.org.uk/help/help.asp?code=BTThes/r/71498.htm
RAILWAY WORKERS COTTAGE
Used For:
Railway Navvys Cottage
Railway Workers House
Definition: Purpose-built housing for railway workers.
Building Type Class: DOMESTIC
Included In (Broad Term): TRANSPORT WORKERS HOUSE
See also (Related Term): CROSSING KEEPERS COTTAGE
In the US, that would be "railroad" and "house". ;)
Here's a US reference:
http://dmla.clan.lib.nv.us/docs/shpo/poguide/guide4d.htmThe Transcontinental Railroad, which began operation in 1869, brought a new array of buildings, structures, and objects to Nevada. Depots, warehouses, shops, workers' houses, bridges, water tanks, and rails were built along the main routes and on short lines built to connect outlying areas to the main lines. To serve railroad travelers, hotels, bars, stores, and other commercial buildings were constructed. The most popular style of depot during the last half of the nineteenth century was stick style, and by the early twentieth century, Mission Revival was the style of choice. Many railroad towns were essentially company towns, with the usual assortment of company-built structures. Railroad workers' housing is distinctive, in that the small and simple cottages were built in orderly rows. A number of these small row houses can still be found in various Nevada communities.
-- the idea and style seem the same.
If you know where your ancestor lived, and can locate the rail lines in the area, it might give you an idea. It's highly unlikely the housing, if it was that, would still be standing so you could check -- although in England the cottages (two-storey rows of three, for instance) show up on Escape to the Country on BBC occasionally. ;)