Small roughly built workers housing was often very poor quality, which is why so little of it survives, but many workers cottages were formed in old village centre farmhouses, when the big open fields of medieval villages were enclosed. The farmers departed to new built farmhouses on their compact acreages and divided their village farmhouses into smaller cottages to let out to farm workers. In areas like ours these houses had thick thatched roofs, coal-fired ranges in the main liivng room and were solidly built.
Since the 1950s when the number of farmworkers fell dramatically with mechanistaion,Many of these cottages ahve been bought up and returned to the big farmhouses they were built as. We bought such a house from the people who had done such a conversion and over 30 years we have reorganised it and improved it to meet modern needs - and I expect our buyers, a young couple, planning children will adapt it yet again.
It is no different to what people do to modern houses Look how many have been chopped and changed before they are even 50 years old, conservatories, extensions, roof rooms, interior walls knocked down etc etc.
We are moving on to another Listed house to which nothing has been done for over 50 years. We will make the changes necessary to make it a house suitable for the living patterns of the 2020s/30s.