Adolygiad Essex 2007-2008 roddodd i ni’r cyd-destun ar gyfer creu partneriaeth bositif newydd rhwng Llywodraeth Cymru a mudiad cymdeithasau tai Cymru, sy’n canolbwyntio ar gyflawni.  Mae’r bartneriaeth lwyddiannus hon wedi bod yn dyst i gynnydd yng ngwaith cymdeithasau tai fel ymateb i’r cynnydd yn yr angen ac arloesi ym maes polisi. Rhwng 2007 a 2001, mudiad y cymdeithasau tai ddarparodd mwyafrif y tai fforddiadwy ychwanegol – 7,746 o’u cymharu â tharged Llywodraeth Cymru o 6,500 o dai ychwanegol – bron 20% yn fwy na’r targed.
The 2007-08 Essex Review provided the context for a renewed positive partnership between the Welsh Government and the Welsh housing association movement, focused on delivery. This successful partnership has seen housing associations increase their gearing in response to increased need and policy innovation. Between 2007 and 2011 the housing association movement delivered the majority of additional affordable homes - 7,746 against the Welsh Government target of 6,500 additional homes – nearly 20% over target.