Broadly speaking, the direct award must be made within 5 years of the original competitively tendered contract being awarded (see Schedule 5, paragraph 8(a) of the Act for the precise time limit).
Hefyd, rhaid iddynt gael eu defnyddio at yr un diben â’r hyn a nodwyd yn y cais gwreiddiol, am o leiaf bum mlynedd ar ôl dyddiad cwblhau’r prosiect fel y nodir yn y dyfarniad grant.