Vacancy Is Not the Same as Available Capacity

Executive perspective

Nominally empty space may be unavailable for the people, activity, time or quality required. The practical challenge is to preserve decision quality when business demand, workforce patterns and market conditions change at different speeds.

Evidence context

CBRE’s European survey reports weekly average utilisation of 46% and peak-day average utilisation of 71%.

This gap shows why weekly averages cannot answer whether a portfolio has sufficient capacity at the moments that matter.

Vacancy describes unoccupied area in a defined period. Available capacity is more demanding: it must be in the right location, open at the required time, technically functional, accessible and suited to the work. A quiet room in another city does not resolve a peak shortage for a local project team.

Osmos Global analysis

Portfolio teams should create a capacity map by day, hour, setting and workforce segment. It should distinguish assigned but unused space, bookable space, operationally unavailable space and settings that are technically open but unfit for the intended activity.

This converts an abstract utilisation debate into an operational diagnosis. Leaders can then decide whether the constraint is total area, configuration, scheduling, service readiness or information quality before committing capital.

Leadership implications

For CRE leaders, the priority is to make assumptions, thresholds and trade-offs visible before a transaction becomes urgent. FM and workplace leaders should translate portfolio choices into operational capacity, service and employee effects. Finance should verify timing, full transition cost and realised benefit. Business leaders must own the demand and risk assumptions on which the real-estate action depends.

A practical decision test The proposal should survive three questions. First, what observable problem is being solved, and which population, location and period define the baseline? Second, what credible alternatives were compared on the same cost horizon and against the same operational requirements? Third, which future event would make today’s decision wrong or incomplete? If these questions cannot be answered, the organisation has a transaction preference rather than a portfolio case.

Decision papers should state confidence explicitly. Verified lease and cost records can be labelled measured; approved business plans can be labelled committed; workforce and market assumptions should remain forecast; and management choices should be labelled judgment. This simple classification prevents an attractive scenario from being presented with the certainty of audited history.

Implementation guidance

Begin with a bounded decision and a documented baseline. Compare at least three credible options on a common horizon. Identify which evidence is measured, forecast or judgment, and define the trigger that would change the preferred option. After implementation, review whether capacity, cost, quality, flexibility and risk moved as expected.

Practical actions

• Separate vacancy, occupancy and utilisation definitions. • Report peak as well as average demand. • Measure failed access by space type. • Test operational changes before adding area.

Risks, limitations and unresolved questions The European survey aggregates different organisations and markets; local peaks, definitions and workplace configurations can vary materially. Portfolio decisions also depend on local leases, tax, regulation, labour conditions, technical due diligence and business priorities. No cited percentage should be extrapolated beyond its stated sample or geography.

Source notes

[1] CBRE. European Office Occupier Sentiment Survey 2025. 1 October 2025. https://www.cbre.com/insights/reports/european-office-occupier-sentiment-survey-2025 Accessed 30 August 2026.

Editorial note

This is original Osmos Global analysis based on the cited source. Source findings are distinguished from Osmos interpretation and recommendations.

No third-party chart, table or protected expression is reproduced.