Ecobuild 2016 - Making the business case for large scale retrofit investment
The rationale for domestic retrofit is as important as ever. Retrofit not only cuts carbon emissions, it makes it cheaper to keep homes warm and helps to overcome poor ventilation and damp, and improves health. The seminar, chaired by Kore Mason, programme manager for the Greater London Authority, explored the business case for energy efficiency works as well as how to identify and manage the technical risks.
George Simm, energy consultant at Capita, began by asking why exactly retrofit needs a business case? The main reasons, he said, where to show clearly how benefits can be maintained, ensure projects are deliverable, gain senior level buy-in, and help plan future phases.
According to Simm, in a time of unprecedented business pressures, every funding plan for housing developers needs to be justified, and that retrofit is still seen as being a ‘nice to have’ rather than a necessity. It is vital that the wider benefits are demonstrated, such as the generation of local employment and the increase in Net Present Value of the project that often results.
Making a strong case requires:
- Good understanding of drivers and targets.
- Ability to articulate the full range of benefits beyond tenant welfare.
- Sound plan for funding, procurement and delivery.
Simm said funding is still available from a range of sources, but projects that can demonstrate a return have the best chance of success. He was confident that organisations willing to develop the case for retrofit would see benefits in the future, and cited the Energiesprong organisation currently aimed at social housing providers as an example.
Lisa Pasquale, director of Six Cylinder, spoke about managing the risks of retrofit. She cited the most common problems as: underventilation and condensation, air leakage, mould issues, interstitial condensation, and overheating. Not to mention the negative impact on profit and reputation for housing associations having to deal with remedial works.
On the question of why retrofit can go wrong, Pasquale made the following diagnoses:
- Overambitious performance gains claimed by designers and suppliers.
- A lack of robustness of detailed design.
- Fragmented procurement and delivery (lack of overall responsibility and ownership).
- Poor construction sequencing and commissioning.
- Inadequate handover and user guidance.
She suggested that between each of the four retrofit processes – assessment, design, installation, operation – there needed to be ‘retrofit watch points’ to help alleviate problems due to poor integration between trades, such as inappropriate substitutions to materials and products.
On the issue of post-occupancy evaluation, she stressed the need for monitoring fuel use, occupant surveys, air permeability testing and thermographic surveys. She also said it was important to take account of the fact that residents may have been underheating their property prior to retrofitting due to fuel poverty.
While the green building industry may have suffered substantial setbacks at the hands of the Conservative government, there are still signs that progress is being made. Although some members of the audience expressed concerns that it was too little and too slow, the speakers seemed confident that the business model for retrofit will become more coordinated as bigger firms start to get involved, working with smaller ones and increasing numbers of projects.
 Find out more
 Related articles on Designing Buildings Wiki
- Allowable solutions for zero carbon buildings.
- BRE and Willmott Dixon project to retrofit of a 1920s semi-detached house.
- Building Places that Work for Everyone.
- Ecobuild 2016 - What makes good housing?
- Ecobuild 2016 - What makes housing fit for the future?
- Ecobuild 2017.
- Green building.
- Home Quality Mark.
- How to deal with retrofit risks.
- Leadership in Energy and Environmental Design LEED.
- National Refurbishment Centre.
- Nearly zero energy buildings.
- Retrofit coordinator.
- The Each Home Counts report and traditional buildings.
- Zero Bills Home.
- Zero carbon homes.
Ireland’s Minister for Rural and Community Development, Heather Humphreys, announced a new funding stream to support Local Authorities (LAs) to purchase vacant buildings that could be converted and developed for community use.
Eleven pubs across England have been recognised for their historic or unusual interiors, as they have been listed, upgraded or relisted.
The Heritage Sector Resilience Plan, developed by the Historic Environment Forum (HEF) with the support of Historic England, has been launched.
An ‘All-Island’ commitment to Ireland’s vernacular heritage has been established with the signing of the North South Agreement on Vernacular Heritage, supporting traditional buildings etc.
Canons House, a landmark building on Bristol Harbourside, has been awarded Grade II (GII) listed status having been built as a regional headquarters for Lloyds Bank between 1988 and 1991 (Arup)
The Building Research Establishment (BRE) has announced a new project with the Department for Business, Energy and Industrial Strategy (BEIS) to improve and modernise the home energy rating scheme used to measure the energy and environmental performance of UK homes.
Sector lead the Construction Skills Certification Scheme (CSCS) has recognised the IHBC’s professional accreditation and support (CPD etc.) in awarding its PQP (Professionally Qualified Person) cards.
Work to repair a fire-hit medieval hotel in Gloucester is underway as crews have started work to strip back some of the modern trappings and reveal the historic framework.
The Secretariat to the European Heritage Heads Forum has has coordinated its declaration of solidarity and support for Ukraine’s cultural heritage institutions.
2022 will see the IHBC mark a quarter of a century since our incorporation as a professional body supporting and accrediting built and historic environment conservation specialists. We’re kick-starting it by inviting your ideas on how to mark this special year!