Active since 2006 with 11 branches in France and Spain, Kytom has delivered more than 1,200 office projects, giving us a precise reading of the 2024-2030 trajectories. Our method combines three perspectives: a financial perspective (cost per workstation, occupied m² ratio), an HR perspective (employee journey, attractiveness) and an environmental perspective (energy efficiency trajectory, regulatory compliance with an average max Cep,nr of 75 kWhep/(m².an) and an average max Cep of 85 kWhep/(m².an) for offices). On an average area of 850 m², we build a 5-year scenario, costed per m² and per workstation, factoring in the probable 20% reduction in floor space, the rise of collaborative spaces, and the trade-off between major renovation and gradual redesign. The deliverable is a master plan, not just a floor plan.