Housing and Planning Bill

I wonder if the Minister can help me because I am now slightly confused. If the local authority is expected to use funds upfront to make repairs and bring a property up to suitable standards, and the only way it can recoup them is through a charge—whether a first or a second charge—is it not the case that that money can be realised to the council only when the property is sold, which may be a considerable time after the local authority has incurred the costs?