Overcladding of occupied buildings is a specialist construction service.
Such services may be defined as:
Specialist Service
a service and/or product where design cannot be separated from delivery and where design cannot be completed ahead of tender
Seen through the client’s eyes, a procurement ‘wish list’ would have to tick all these boxes:
… and ideally result in an enjoyable process with a collaborative team led by a contractor who actually does what they say they will.
This process already exists – the Pre-Construction Services Agreement (PCSA).