What the Changes In BREEAM V7 Mean for Building Design, Performance and Daylight
The release of BREEAM v7 introduces a number of important changes for developers, architects and sustainability consultants, with daylight performance playing a more significant role than ever before.
As expectations around building quality, occupant wellbeing and sustainability continue to evolve, the latest version of BREEAM places greater emphasis on understanding how people actually experience daylight within buildings.
At Century Associates, we have been reviewing the new requirements and considering what they mean for project teams seeking to achieve strong BREEAM outcomes.
What is BREEAM?
BREEAM (Building Research Establishment Environmental Assessment Method) is one of the world's leading sustainability assessment methods for buildings and infrastructure.
The certification framework assesses a range of factors including energy efficiency, environmental performance, health and wellbeing, materials, transport and management practices.
For developers and building owners, achieving a strong BREEAM rating can help demonstrate a commitment to sustainability, enhance asset value and create healthier environments for occupants.
A New Approach to Daylight Assessment in BREEAM v7
One of the most significant changes within BREEAM v7 is the move towards a more performance-based approach to daylight assessment.
Historically, daylight assessments have often focused on static calculations and compliance-based metrics. The updated framework places greater emphasis on Climate-Based Daylight Modelling (CBDM), which provides a more detailed understanding of how daylight performs throughout the year under real-world conditions.
This approach allows design teams to better evaluate the quality and availability of daylight within a building and understand how occupants are likely to experience internal spaces.
Increased Focus on Occupant Wellbeing
A key theme running throughout BREEAM v7 is the relationship between building performance and occupant wellbeing.
Natural daylight has long been recognised as an important contributor to health, comfort and productivity. The updated framework places additional emphasis on ensuring that building occupants have access to high-quality daylight, particularly in building types where it can have the greatest impact.
This includes:
Residential developments
Healthcare facilities
Educational buildings
Workplace environments
By prioritising daylight performance, project teams can help create spaces that support both wellbeing and long-term building value.
Greater Consideration of Glare and Sunlight Exposure
BREEAM v7 also introduces increased recognition of glare control and sunlight exposure.
While maximising daylight is often a key design objective, excessive sunlight and glare can negatively affect occupant comfort and building usability. The updated framework encourages a more balanced design approach that considers both daylight provision and visual comfort.
Additional credits may be available for projects that demonstrate higher levels of performance in these areas, encouraging more sophisticated daylight design strategies.
Why Early Design Decisions Matter
One of the clearest messages from BREEAM v7 is that daylight should be considered at the earliest stages of project development.
The most effective opportunities to influence daylight performance often occur during concept design, when building massing, orientation, layout and façade design are still being developed.
Early-stage daylight analysis can help project teams:
Identify opportunities to improve building performance
Support BREEAM certification objectives
Enhance occupant wellbeing
Reduce the need for costly design changes later in the process
Create more sustainable and resilient buildings
By integrating daylight considerations from the outset, teams are better positioned to achieve both environmental and commercial objectives.
What Does This Mean for Developers and Design Teams?
The changes introduced in BREEAM v7 reflect a broader industry movement towards evidence-based building performance and human-centred design.
For developers, architects and sustainability consultants, daylight is increasingly becoming a strategic design consideration rather than simply a compliance requirement.
Projects that successfully integrate daylight performance, visual comfort and wellbeing objectives are likely to be better placed to achieve strong sustainability credentials while delivering higher-quality environments for occupants.
How Century Associates Can Help
At Century Associates, we provide specialist Daylight and Sunlight consultancy to support development projects throughout the design process.
From early-stage design reviews and Climate-Based Daylight Modelling (CBDM) assessments to BREEAM-related analysis and reporting, we work with project teams to optimise building performance and support sustainability objectives.
As BREEAM v7 places greater emphasis on daylight quality and occupant wellbeing, early engagement can help identify opportunities, manage risks and maximise assessment outcomes.
If you are planning a development and would like to understand how daylight performance can contribute to your BREEAM strategy, our team would be pleased to discuss your project.
Please do not hesitate to contact us at enquiries@century-associates.co.uk, or on 07554 939 187, for advice.