It is important that you at least see the habiation licence before you complete on your property. It is standard practice for your lawyer to pass this on to you before completion.
Are your lawyers giving you any reasons as to why they don't have the necessary documents available to you?
Many people do complete on their properties without the proper licences in place, which is actually quite crazy as it means that the town hall is under no obligation to provide services to the urbanisations.
You must insist in this documentation being provided to you. Apply pressure to your lawyers, that's what you're paying them for.
Justin