 Between the Acts of Union in the mid @-@ 16th century and the English Civil War in the mid @-@ 17th century , a period of great rebuilding took place in the Kingdom of England , of which Wales was now annexed , and this is reflected in the structures that were built within the Rhondda Valley . The fluctuating economic state of the late Tudor period resulted in farmers taking in more land , creating higher levels of surplus goods and therefore producing higher profits . This profit was reflected in the new farm houses built in the Rhondda and for the first time an emphasis on domestic comfort became apparent in the design of the dwellings . Many of the new farm buildings were simple structures consisting of two or three small rooms , though of a much sturdier and permanent quality than the Medieval platform houses . A popular style of building was the long @-@ house , a building which combined the house and cowshed into a single building . By 1840 , at least 160 farms existed in the Rhondda , but most were destroyed with the growth of the mining industry . Of the few surviving buildings , those of note include Tynewydd ( ' New House ' ) in Blaenrhondda , a 17th @-@ century house thought to have given its name to the neighbouring village of Tynewydd and Tyntyle in Ystrad dated around 1600 . 
