Mae'n bwysig cydnabod, er bod yr amcangyfrifon hyn yn sail i drafod penderfyniadau polisi, a'u bod yn dynodi'r angen a'r galw cyffredinol am dai ychwanegol yng Nghymru, ni ddylent gael eu defnyddio fel targed tai ac ni allant ddarogan yn union beth sy'n mynd i ddigwydd yn y dyfodol.  Mae'r amcangyfrifon hyn yn rhan o'r sail dystiolaeth i lywio'r gwaith o ddatblygu targedau lleol neu genedlaethol y mae angen iddynt ystyried polisïau cenedlaethol, rhanbarthol a lleol ac ystyriaethau ymarferol er mwyn llunio barn ar y lefel o dai y gellir eu cyflwyno mewn ardal go iawn.
It is important to acknowledge that, while these estimates form a basis of discussion for policy decisions and are an indication of the overall need and demand for additional housing units in Wales, they should not be used as a housing target and cannot forecast exactly what is going to happen in the future.  These estimates are part of the evidence base to inform the development of local or national targets which need to take account of national, regional and local policy and practical considerations to reach a view on the level of housing that can actually be delivered within an area.