Compare occupancy with the space and passive building energy you keep available all week. See where demand is concentrated, what sits unused on quieter days, and which changes are worth investigating.
The bars are scaled against the same 250-desk capacity. Wednesday leaves 37 desks spare, while Friday leaves 170. The workplace still has to be lit, heated, cooled and ventilated unless the active footprint changes.
Start with the weekly occupancy pattern, then compare it with the space and passive building energy you keep running. The calculator highlights the mismatch without pretending that every unused desk or kilowatt-hour is immediately avoidable.
Use rough figures. The aim is to expose the size of the opportunity before you investigate it properly.
Using: Observed occupancy. Observed occupancy is the strongest basis for comparing real workplace use.
Against 250 desks today, that puts 0 desks into a review zone. On a simple per-desk allocation, those desks represent about £0 of annual property cost.
Right-sizing signal only. Lease, floorplate, growth, team, accessibility and room constraints still matter.That is 59 below your current peak. With the same 20% headroom, the theoretical desk requirement falls to 185, putting 65 desks into a review zone.
That means 154 desks of current capacity are not required for demand on that day. The question is whether people can be consolidated into a smaller area so parts of the workplace can actually be switched down.
Even a busy day can leave meaningful space unused. That tells you how much workplace is being maintained relative to peak demand.
A strong Wednesday and a quiet Friday create different operating conditions. The gap may point to demand management or a smaller active footprint on quieter days.
Heating, cooling, ventilation and lighting can continue across the same footprint even when far fewer people are present. That is where real operating efficiency matters.
askAiB Workplace Intelligence surfaces demand changes, capacity pressure, booking behaviour and underused periods with the evidence behind each finding.