Around Lake Axaren, close to Norrga, people have been living during the Stone Age. The findings can be connected to the even richer findings that have been made at Korsnäs and Nolinge. On a hill just west of Norrga kvarn lie an ancient castle from the older Iron Age. The thing that is the easiest to see is a Rune Stone that was found in the field in the year 1963. Today the stone stands at the road that goes through Norrga.
Probably both Norrga and its two neighbours, Iselsta and Råby, was part of the expansion that happened during the early Middle Ages. It was then that the villages further west expanded down from the hills into the valley. Several of the houses in the village have a big value from a cultural-historical point of view, especially ‘Södergården’. It was built around 1850 in a style that reminds one of an old Manor house. Close to Norrga, at the stream that runs from the Lake Getaren, were once 3 mills situated.
One of them is still very well kept today with all its inner machinery preserved. Of the other two can the foundation be seen in one case; the last have left no traces in the landscape. These mills were the reason that caused Norrga to be the centre of Grödinge during the 19th century. In the end of the 19th century Rosenhill was founded and gradually took over the role as centre for the neighbourhood.