"but other work has been completed using the residents funds for minor repairs and cleaning away builders waste "
Many of the contract documents and the standard 999 year leases used in apartment blocks fail to make an explicit distinction between the "capital project" type of work for which the builder is responsible, and the maintenance work, for which the Management Copmany is responsible. As Vanilla says, a lot can hinge on the precise wording of the indemnity given by the builder. I always look for for it to be made clear that the builder must finish things to a proper standard before handing over to the management company. It is not always forthcoming, because this means altering the standard documents on all transactions in a development. But when I do succeed in getting the standard document altered to address this concern, it means that all of the people using a "cut price" solicitor get the benefit of me going that extra mile for my client. I have no doubt that other people have likewise benefitted from work done by Vanilla and other legal posters to this forum.
Sorry for bragging, but it's true.