03.11.2026
Keegans is proud to have contributed to the development of Retroflow, the innovative AI-powered retrofit application developed in collaboration with ECD Architects and UCL, which has earned ECD a shortlisting in the Digital Excellence category at the Building Awards 2026.
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Tonight, Jonathan Abbott and Emily Slade from Keegans' Retrofit Team will be representing Keegans at the prestigious Building Awards 2026, supporting our sister company, ECD Architects Ltd, whose innovative Retroflow application has been shortlisted in the Digital Excellence category!
At Keegans, we're embracing the opportunities that AI and digital innovation offer to transform the way we deliver retrofit services – improving efficiency, data accuracy and quality throughout the retrofit journey.
Developed through a Knowledge Transfer Partnership between The Bartlett School of Environment, Energy and Resources, UCL, ECD Architects Ltd and Keegans, and led by Robin Roussel, Retroflow demonstrates how academic research and industry expertise can come together to create practical, data-driven solutions for retrofit delivery.
Our Retrofit Team has played an active role in this collaboration, helping to streamline data processes from initial Retrofit Assessment through to design and coordination.
Retroflow uses AI to extract key information from Retrofit Assessment reports, reducing repetitive manual data entry and enabling Retrofit Assessors, Coordinators and Designers to focus more time on technical analysis, quality assurance and delivering better outcomes for clients and residents.
Our team's contribution has included refining assessment reports, adapting data formats and providing technical guidance on PAS 2035:2023 and evolving retrofit modelling processes, helping ensure the technology responds to the practical demands of delivering compliant retrofit programmes.
This collaboration demonstrates how technology, technical expertise and joined-up working can create meaningful improvements in the efficiency, consistency and quality of retrofit delivery.
Congratulations to ECD, Robin Roussel and everyone involved in developing Retroflow. We're proud to have contributed to this exciting innovation and delighted that Jonathan and Emily will be there to celebrate the team's achievement.
According to PAS2035:2023, what changes have been made to the qualifications required for retrofit designers?
The qualification requirements for retrofit designers have changed significantly. Previously, a Retrofit Coordinator (RC) could carry out retrofit design for Risk Path A & B projects. However, under the new guidelines, this role must now be carried out by a specialist or a trained designer. This ensures that the design work meets the highest standards for energy efficiency and safety.
What does Retrofit mean?
The UK Government has identified the retrofit of buildings as a key lever in their low carbon strategy to achieve 68% carbon reduction by 2030. All affordable homes will be required to achieve a minimum EPC of C by 2030. All ECO funded refurbishment projects are required to achieve full compliance with PAS 2035:2019 from July 2021 with a 20% funding uplift for projects that comply before the deadline.
PAS 2035:2019 (Specification for the Energy Retrofit of Domestic Buildings) is revolutionising the refurbishment of buildings. Over the last 30 years energy efficiency programmes have focussed on single measures (i.e.: cavity wall insulation or window replacement, etc.) but all future programmes now require a holistic solution designed to suit the specific building type.
To comply with PAS 2035, a qualified Retrofit Coordinator must be employed to provide a 'Whole House Retrofit' solution.
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