High-performance facades must do more than save energy; they must protect the health and well-being of occupants while remaining resilient in an ever-changing urban landscape.

One of the most significant challenges in dense cities is maintaining sunlight autonomy—the ability for occupants to access natural light throughout the year. Recent research, published in the Journal of Building Performance Simulation and LEUKOS, introduces a parametric design workflow that uses solar radiation data to automate facade geometry.

By adapting the Window-to-Wall Ratio (WWR) and frit density based on orientation and urban obstructions, this workflow achieves:

• Improved visual comfort: A 11% reduction in disturbing glare compared to conventional glazed facades.
• Daylight optimisation: An increase of 2% in Useful Daylight Illuminance (100-3000 lux), ensuring healthy indoor environments compared to fully glazed alternatives.
• Energy resilience: A 22% reduction in Energy Use Intensity (EUI), primarily by mitigating cooling loads in hot climates.

A human-centred building must be resilient to urban densification. Traditionally, when a new building rises nearby, the original facade may no longer be fit for purpose, leading to a performance gap or necessitating total replacement due to new regulatory requirements and facade obsolescence.

To address this, the research introduces the Solar Circularity Indicator (SCI). This metric tracks the ability to maintain, relocate, or reuse facade modules as the city evolves. In the tested case study, the workflow achieved an 85% SCI score, maintaining 79% of modules and reusing 29% of altered elements, even after a 100m-high-rise was built adjacent to the site.