Measuring Success - KPIs for Building Performance
Monitoring only delivers value if improvement can be measured.
IOT vs BMS
What's the Difference?
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Key performance indicators, or KPIs, provide clear evidence of whether building performance is actually getting better over time.
By tracking the right KPIs, facilities and estates teams can move away from subjective judgement and demonstrate progress across energy, comfort, and maintenance using real data.
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Why KPIs matter in building performance
Without KPIs, performance discussions are often reactive and anecdotal. Rising bills, recurring complaints, or frequent call-outs signal a problem, but they do not explain where or why it exists.
KPIs turn live data into measurable outcomes. They allow teams to confirm whether actions taken through building optmisation initiatives or predictive maintenance strategies are delivering sustained results, not just short-term fixes.
They also provide a common language for conversations between FM teams, landlords, tenants, and sustainability leads.
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Common building performance KPIs and what they show
The most effective KPIs focus on outcomes rather than raw sensor values. Typical examples include:
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Energy use intensity to track overall consumption trends
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Reactive versus planned maintenance ratio to assess maintenance maturity
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Time within comfort bands to measure tenant comfort consistency
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Asset uptime and fault recurrence to highlight reliability issues
These KPIs are usually derived from data collected through power monitoring, temperature monitoring, and condition-based alerts visible in the live feed.
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Using KPIs to drive improvement
KPIs are most valuable when tracked over time. Trends show whether performance is stabilising, improving, or drifting, allowing teams to intervene early rather than reacting months later.
For example, a falling reactive maintenance ratio indicates that condition-led maintenance is working. Improved comfort compliance alongside reduced energy use shows systems are being tuned more intelligently, not simply turned down.
When reviewed regularly, KPIs support better prioritisation, clearer reporting, and more confident decision-making.
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Next steps
If you are unsure how your spaces are really being used, a free site consultation can help identify where occupancy monitoring will deliver the most benefit. You can also contact us to discuss specific use cases or constraints within your building.
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