An increasing share of building operation problems no longer stems from design or execution errors, but from a simple reality: buildings are no longer used according to the scenarios for which they were designed. Regulations and calculations are based on stable assumptions regarding occupancy, use, and behavior, while reality is becoming increasingly variable.

Apartments where cooking rarely takes place, intermittently occupied offices, commercial spaces converted into logistics points, or homes partially used for remote work all generate functional imbalances. Building systems are either oversized or used inefficiently, actual consumption differs from estimates, and comfort becomes difficult to control.

The consequences are economic: higher operating costs, accelerated equipment wear, and post-handover adaptation interventions. Energy-efficient buildings are, paradoxically, the most sensitive to this discrepancy, because they operate optimally only under conditions close to those assumed in the calculations.

The problem is not a lack of technology, but the rigidity of the design concept. Use is no longer a fixed parameter, but a dynamic one. Failing to understand this leads to buildings that are “correct on paper” but problematic in operation.

For designers and developers, the future challenge is not only compliance with regulations, but anticipating real patterns of use. Without this shift in perspective, the gap between design and reality will continue to generate hidden costs.

(Photo: Freepik)