Monday 4th July, 15.30 – 17.30

This session, hosted by the Building Performance Network UK, brought delegates upto date with the latest client activities in Building Performance Evaluation (BPE), with a specific focus on the ‘in-use/occupancy’ stage. New activities by ilke Homes, EnergieSprong, and Hoare Lea were introduced, showing how BPE can help inform client business plans and their drive towards net zero buildings. Plus there was news of the retrofit policy landscape from BEIS.

Each speaker was be asked to outline: Why the client choose to do BPE? What approach they chose? What value the client got out of it? What would they do differently next time?

Recorded Presentations


15.30 – 15.35 INTRO George Martin, BPN Chair

15.35 – 15.50 Performance measurement for new homes – Mat Colmer, BPN Director

15.50 – 16.05 The business case for new home performance guarantees – Nigel Banks, R&D Director, ilke Homes

16.00 – 16.15 Case study: Bryn Bragl, built by Wales and West Housing – Brogan Watkins, Sustainability Consultant, Hoare Lea

16.15 – 16.25 Q&A

16.25 – 16.30 BREAK

16.30 – 16.45 Building performance and policy – Alison Skillen, SHDF (Implementation & Delivery), BEIS

16.45 – 16.55 Performance-based retrofit and BPE – Zack Gill, EnergieSprong Technical BPE Advisor

16.55 – 17.10 BPE from a Housing Association Perspective – Rebecca Hart, United Living Property Services

17.10 – 17.20 Q&A

17.30 CLOSE


Please go to our EventBrite booking page.

BPN Members and their guests are FREE.  Non-Members are £30+VAT.

Please contact Laura with any queries, including Membership enquiries:



Nigel Banks, R&D Director, ilke Homes

Nigel is a Chartered Engineer who started his career at AECOM Applied Research. At Keepmoat, he delivered many of the UK’s best performing new build and retrofit projects and led the R&D project that resulted in the creation of ilke Homes. At ilke Homes, Nigel is focused on developing step change opportunities and new R&D projects, including ilke ZERO.

ilke ZERO is ilke Homes’ commitment to only build ZERO carbon homes, with ZERO energy bills, at ZERO additional cost to traditional construction by 2030. Working in partnership with Octopus Energy and Gresham House, the first homes to benefit from the Octopus ilke ZERO bills tariff have been installed in Essex, complete with their modular solar roofs and are due to be occupied this summer. To find out more, including the importance of BPE, come to our summer seminar. More on ilke ZERO here.

Brogan Watkins, Sustainability Consultant who works for Hoare Lea

Brogan studied Architectural Environment Engineering at the University of Nottingham, before gaining a Masters in Environmental Design at the Bartlett.

His first role at Hoare Lea was as a Mechanical Engineer, where he worked on numerous low-energy housing projects across South Wales. Since becoming a Sustainability Consultant, his work has focused on Energy, Whole Life Carbon Assessments & The Circular Economy.

Alison Skillen, Technical Support Manager for the Social Housing Retrofit Accelerator programme, BEIS

Alison lead’s the technical workstreams within policy, project delivery and retrofit performance monitoring for Social Housing Decarbonisation Fund programme including leading the delivery of the Social Housing Retrofit Accelerator programme. Alison has several years’ experience of retrofit and journeys to net-zero from a range of energy and Local Authority climate projects, following her earlier career in telecoms and network engineering.


Dr Zachary Gill, Net Zero Technical Analyst, Energiesprong UK

Zack’s goal is to ensure that all of our projects  demonstrably  meet or exceed their performance targets and also to drive continual improvement and refinement of the ES approach and the viable technical solutions.

Zack is a building performance expert, working and challenging the field of low-energy domestic buildings for over 13 years. He undertook his academically commended PhD research on the contribution of user behaviours to building performance with Buro Happold Engineers. Subsequently, he worked with Willmott Dixon Energy Services, pioneering performance-feedback approaches, in particular on their wide-scale social housing retrofit schemes.

‍In 2019, Zack established his own building performance consultancy, SOAP Retrofit Ltd, to continue championing real-world measurement techniques and developing science-based retrofit approaches. He also co-authored the British Standard on Building Performance Evaluation (BS40101:2022)

Rebecca Hart, Decarbonisation Project Manager at United Living Property Services

Until very recently, Rebecca was at Nottingham City Homes. At NCH, she worked on EnergieSprong projects over several years.  At our seminar, she will share her experience. Rebecca on LinkedIn.


ilke ZERO – solar roof installation


Date: 04/07/2022

Time: 3:30 pm - 5:30 pm