I live beside marsfield and while its still under alot of construction at the moment, there are no social units in it at present. There are however affordable housing, and like lilwinner said, this is completely different to social housing. I bought through affordable housing and was paying a mortgage of 1.1k so its no differnt to someone paying ordinary mortgage, but difference would be i didnt need any deposit really (only 1k), plus, i had to pay them 38k to buy them out. I now own in privately, while 90% of the block is affordable still, however, I do know with the development i'm in the builders are renting out a few of the blocks as market is so low, so you may have rented accomodation near you. This usually isnt an issue i find, there are a few ppl renting near us and its never been any issue. Really depends on who moves in i think.