If you have defects outstanding, then my advice is DO NOT complete. We have received 4 threating E-mails from Interlaken's legal team concerning the completion process i.e. Clause 2of contract will mean the developer will cancel the contract and the purchaser will lose their deposit.
We advised our solicitor on each occassion that we were not prepared to complete due to outstanding defects, we kept everyone updated via e-mail as to the reasons why.....etc....... we documented via e-mail every conversation we had with our solicitor, in case Interlaken actually cancelled our contract........ We figured that if we acted in a reasonable manner then we had to be protected by either Spanish or European law........... you may wish to investigate with your solicitor the information below
Under the Spanish Rights Law 176 of 24th July 1984, you are protected against the use of any clause/s in the signed contract, which forces the consumer to agree a sale with out having received in the consumers view a satisfactory product.