Laing O'Rourke Australia office - Level 21, 100 Mount Street, North Sydney · Transition modelFACILITY

This is a regional/hub office (Level 21, 100 Mount Street) with no flow data reported, meaning its dominant footprint is indirect: Scope 2 electricity purchased off the AU grid, currently at an observed intensity of 525.18 gCO2/kWh (2025, Ember). Physical dependency centers on water in a watershed carrying High baseline water stress (score 3.64, 40-80% label) and moderate drought exposure (1.93), though overall composite site risk is rated Low (0.6) with riverine flood scoring notably higher (3.09) than coastal flood (0.08).

By 2030, grid emissions intensity for AU is projected to nearly halve to 280 gCO2/kWh from the 2025 observed value of 525.18, directly reducing the office's Scope 2 footprint given its likely dependence on grid electricity for lighting, HVAC, and equipment. No forward water-stress or flood horizon scores are populated for 2030, so the trajectory of the High baseline water stress (3.65) and elevated riverine flood exposure (3.09) cannot yet be quantified going forward; this is a data gap rather than a signal of stability.

No 2080 grid intensity figure is provided, but the trajectory from 525 gCO2/kWh (2025) to 100 gCO2/kWh (2050) implies the AU grid will be substantially decarbonised by mid-century, pushing residual Scope 2 exposure for this office toward negligible levels. The unresolved variable is physical risk: with no 2050/2080 water stress or riverine flood horizon data available, the durability of the current Low overall risk score (0.6) against a High baseline water-stress watershed cannot be confirmed, and this office's long-term profile should be reassessed as horizon data becomes available.