PROJECT OVERVIEW

Green Heritage Homes PROJECT

The project aims to enhance energy efficiency in listed and historic buildings, addressing both conservation and climate change challenges. It seeks to build confidence and knowledge among homeowners and professionals, demystifying energy efficiency and conservation principles.

Why are we doing this project?

There are over 370,000 listed buildings registered in England. Enabling them to be more energy efficient whilst protecting their historic value would address the climate crisis, reduce bills, improve the comfort of residents – and ensure they are occupied and cherished for many decades to come. Bath and North East Somerset is world-renowned for its built heritage and has over 5,000 listed buildings within the City of Bath World Heritage Site alone, so is a great place to test different approaches.

Phase 1 of Green Heritage Homes, funded by the government’s Local Energy Advice Demonstrator programme, ended in March 2025. We worked with Bath and North East Somerset Council, Bath Preservation Trust, the Centre for Sustainable Energy and People Powered Retrofit, bringing together conservation and energy expertise to create a shared understanding of the opportunities and barriers. We are grateful to the 40+ Listed Building Champions, and many others who attended our workshops or talks. More information about our work in Phase 1 can be found below.

Our approach

What’s next

We are moving into Phase 2 of the project, building on work from Phase 1. In autumn 2025 we will re-launch our joint service with Bath and North East Somerset Council’s Planning department. Homeowners will be able to get planning and energy advice at the same time, with a joint home visit from a BWCE energy expert and a council Conservation Officer conducting a Service Level 0 pre-application.

If you’re interested in this service, you can register below and we’ll let you know when the next phase launches.

“It’s great to be able to help people make their beautiful listed buildings more efficient.”

Sally Merrett, BWCE Energy Assessor

Project activites

We took various approaches in Phase 1 of the project. Many of these activities will continue now Phase 1 has ended – see below for details.

  • Local authorities already offer pre-application advice to inform Listed Building Consent applications. However, a standard pre-app usually requires a homeowner to have decided on the scope of works proposed. For retrofit, this can result in unsuitable energy efficiency measures being progressed, or confusion about different types of measures and when these might be applicable.

    A new Level 0 pre-app service was introduced, which does not require a proposal and is aimed at homeowners who are interested in improving the energy of their listed building but don’t know where to start. As part of the service, the council’s Conservation Officer attends a site visit and provides verbal and written advice on which measures might be suitable. By getting advice at the earliest stage, applicants can develop more suitable proposals and then submit a Listed Building Consent application with greater confidence.

  • Listed Building Champions are homeowners who received both a Service Level 0 pre-app from BANES Council and a home energy survey from BWCE. To get conservation and energy advice at the same time can inform homeowners and their proposals for consent, that are more suitable from both a conservation and energy perspective.

    In return for this discounted service, Champions agreed to provide a public case study of their experience, with the aim to inspire others to sensitively retrofit their listed buildings.

    Nationally, 93% of listed building consent applications were approved during the second quarter of 2022[i]. Despite this, there is a widely circulating perception that listed building consent will be refused. In a recent survey by DESNZ, there was support for the consent process to protect our heritage, but 75% of respondents felt that it was a barrier to retrofit. We aim to counteract this perception through sharing the positive stories of Listed Building Champions and through our easily accessible videos and materials.

  • Our Landlord Champions also received a heavy discount in return for sharing anonymous case studies. Both a council Conservation Officer and BWCE energy assessor visit the property to advise on suitable measures, impact on the Energy Performance Certificate (EPC) and exemptions from the Minimum Energy Efficiency Standard (MEES) regulations.

    Listed buildings are not automatically exempt from the MEES requirement for rental properties to be EPC ‘E’ or above and there may be other local requirements, e.g. in Bath and North East Somerset, Houses of Multiple Occupation (HMOs) need to achieve an EPC ‘C’.

  • Working with Bath and North East Somerset Council’s Empty Property Service, we offer energy and conservation advice on how to bring listed buildings back into use.  If you are the owner of a property that has been empty for six months and over, Bath and North East Somerset Council offers financial incentives and practical support.

    Details can be found on the council website or by contacting the Empty Property Officer directly: empty_properties@bathnes.gov.uk or 01225 396411.

  • The ‘Retrofit Coordinator’ is a new role in the built environment sector – they are a qualified professional who can commission and manage building retrofit projects.

    After an energy survey, homeowners often need further support. Through Green Heritage Homes, BWCE offer support to a limited number of households, for example by helping with developing a brief for works, or getting quotes from trusted installers or heritage consultants.

    Please email us for more information: home.energy@bwce.coop.

  • Bath Preservation Trust (BPT) campaigns for and promotes the conservation, sustainable enhancement and celebration of the unique and historic City of Bath as a World Heritage Site.

    BPT has long been a champion for historic retrofit. Through Green Heritage Homes, it is offering free energy advice for its members who own listed buildings, and is testing the potential for heritage groups to reach different audiences. 

  • Our webinars give homeowners and professionals a grounding in how to approach listed building retrofit.

    Our ‘Spotlight Sessions’ are small in-person group sessions. They include a presentation from a Conservation Officer and BWCE energy expert, followed by the opportunity for homeowners to ask questions and get advice on their own homes.

  • As we add more renewable energy to the grid, the carbon emissions from operating our buildings reduces, and choosing retrofit measures with low embodied carbon becomes proportionally more important for tackling the climate crisis.

    The natural traditional materials that usually work best for listed building retrofit also often have the lowest embodied carbon. We want to make this benefit more visible as an additional motivation for sensitive retrofit. We do this firstly through a simple factsheet comparing the embodied carbon of different material options, e.g. wood fibre board versus synthetic foam-based insulation.

    Secondly, we work with People Powered Retrofit to update their Home Retrofit Planner retrofit assessment tool (used by BWCE and other organisations) to calculate embodied carbon impact of retrofit measures alongside operational carbon impact.

Resources for listed building owners

Our suite of eight short videos use case studies to illustrate how to approach energy measures from a listed building consent perspective in a simple, accessible format.

We also worked with Bath & North East Somerset Council to produce two factsheets to guide you with the listed building consent process and choosing retrofit measures.

Phase 1 supported by