Technical Guide

Building Performance Measurement Explained

Design models and compliance calculations provide an indication of performance, but they do not show how a building behaves in use. Measured data does.

Across housing, retrofit and new build, there is increasing recognition that the gap between predicted and actual performance needs to be understood and managed. Building performance measurement provides the evidence needed to do that.

Why building performance measurement matters

Evidence from across the sector shows that:

  • Building's energy use rarely matches predictions
  • Heat loss differs from design assumptions more than more often than not
  • Airtightness varies depending on construction quality and detailing
  • Ventilation systems do not always deliver intended air flow rates

These factors directly affect energy use, occupant comfort and system performance. Without measurement, they remain assumptions.

Learn how to address building performance concerns

Building performance measurement supports a more informed approach to design, retrofit and asset management. It enables you to understand actual performance, make better decisions, demonstrate outcomes and reduce risk.

The role of building performance measurement

Building performance is influenced by multiple factors and no single metric tells the full story. Measurement provides visibility across key areas, including whole-building heat loss, airtightness, fabric performance and ventilation

Together, these measurements provide a more complete and accurate understanding of how a building operates.

Building performance is the result of multiple interacting factors:

Building performance is the result of multiple interacting factors:  Fabric heat loss Airtightness and air leakage Thermal performance of individual elements Ventilation rates and system effectiveness Occupant behaviour and operational patterns Heating system performance and control strategy

Understanding these together provides a more complete picture of performance and enables better outcomes.

Build Test Solutions - the building performance experts

By providing a range of technologies designed to measure building performance in real-world conditions, the BTS team is ideally placed to support you with all your measurement needs.

Whether you are looking to invest in the equipment, increase your competency through training or need some consultancy, we can help.

https://www.buildtestsolutions.com/building-diagnostics-equipment

Where do you want to take your business? Explore the opportunity

Why test?

Whether you are a tester, a landlord or a property manager, building performance measurement should be high up your list of priorities.

For testers and consultants Expand from compliance testing to comprehensive performance assessment - Deliver a broader range of measurement services across projects and portfolios - Provide clients with actionable insights, not just individual test results - Support large-scale programmes with consistent, repeatable methodologies
For landlords and housing providers Identify underperforming properties across portfolios - Target retrofit investment where it will have the greatest impact - Improve energy efficiency and reduce operational costs - Enhance occupant comfort and reduce complaints - Better quality assurance to reduce long term maintenance cost and risk - Support compliance and reporting with measured performance data
For property owners and developers Validate building performance against design expectations - Reduce the risk of performance-related issues post-completion - Inform system sizing and specification using real data - Protect asset value through improved building performance - Evidence performance for enhanced compliance

Ready to enhance your services? Talk to our experts today!

Talk to us about measuring building performance

Find out how Build Test Solutions can support your projects, programmes or portfolio with practical, evidence-based measurement.

Author

Tanya Jane

Tanya Jane

Marketing Manager

Building performance measurement made simple.

Unique products and smart technologies designed for energy assessors, building surveyors, the construction industry, utility suppliers and other built environment experts.

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Pulse Air Permeability Testing

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