By the time a scheme reaches committee, many of the most influential decisions have already been settled. Development consultants working at this stage rarely make fundamental changes to a scheme, but those involved earlier can shape outcomes while options remain open. The real cost drivers of a site are often set early, before they appear on drawings. Access, topography, services, heritage and context can dictate viability if they are treated as assumptions rather than varia

Recent major London schemes show that commercial projects are no longer shaped at planning committee. The critical decisions now happen earlier, through safeguarding constraints, infrastructure consultation zones, political risk, fiscal exposure and cost assumptions formed before design begins. JPMorgan’s proposed Canary Wharf headquarters illustrates this shift. Progress depended not only on architectural ambition but on early engagement with London City Airport over height