@gds, I’m by no means an LCA expert, but I have not seen a building LCA include Scope 1 and 2 emissions from design/development team. If an architecture firm is working on 50 projects at once, how do you attribute their scope 1 emissions to a singular project? Weighted average based on total hours spent? I have not seen any protocol/methodology that addresses this.
That said, job site energy, water, waste, etc. gets covered under stage A5 and O&M gets covered under Stage B1-B7, per EN 15978.