treveth 1 1 2000x550 - Sustainability


Leading on net zero ready homes

At Treveth we’re taking the lead when it comes to building low carbon development and showing that it is possible to build net zero ready homes in volume.

Our 185-home scheme at Tolgus near Redruth is believed to be one the largest residential projects in the UK designed to achieve challenging carbon emissions targets set for 2030.

We’ve achieved this by assessing both the energy that will be used by the new homes and the energy that will go into building them, to calculate the operational and embodied carbon emissions.

Our next step is to monitor the building of the scheme and the performance of the buildings for at least a year after completion so we can identify any further steps we need to build into our designs to make sure we achieve the anticipated performance.

Treveth’s work developing pathways to net zero was  nominated in the Carbon Neutral category of the 2021 Cornwall Sustainability Awards.

The RIBA 2030 Climate Challenge

We’ve benchmarked our new homes against the Royal Institute of British Architects’ (RIBA) 2030 Climate Challenge and confirmed they already meet net zero science-based targets for 2030, when including renewable energy offset, almost 10 years ahead of time.

We want to help build the market for the delivery of net zero ready homes at scale. We don’t want to build exemplars and one-offs; we want this to be mainstream. That’s why we are happy to share our findings with other like-minded developers.

A clear pathway to net zero

Treveth is also developing a smart energy strategy using a combination or renewable technology and battery storage as part of its plans for net zero by 2030.

And the homes we are delivering now will still be well ahead of current statutory requirements and performance in the volume housing sector.

Tolgus CGI View 2 - Sustainability

Our sustainability values

We’ve developed a Housing Design and Decarbonisation Manual that reflects the eight sustainable outcomes of the RIBA 2030 Climate Challenge, which in turn are derived from the United Nations’ 17 Sustainable Development Goals.  They are:

  • Operational carbon emissions
  • Embodied carbon emissions
  • Sustainable water cycle
  • Sustainable connectivity and transport
  • Sustainable land use and ecology
  • Good health and wellbeing
  • Sustainable communities and social value
  • Sustainable life cycle cost

These are the sustainability values that underpin everything we do, from how we build our homes to the health and wellbeing of our tenants. Each of these outcomes is covered in detail in our Housing Design and Decarbonisation Manual.

We want Treveth residents to be enabled to live low carbon lifestyles without having to think too hard about it, which is why our approach doesn’t stop at the fabric of the building but looks at other sustainable outcomes like transport and wellbeing.

And we want to build sustainable communities where people can put down roots. That’s why our rental homes have three-year tenancies as standard.

Pathway to net zero

We’re working hard to design the carbon out of our new homes.

This applies to operational carbon, which is the energy used by a Treveth home, and embodied carbon, which is the energy that goes into building them, including what materials we use, how they have been produced, and where they come from. Key measures include:

  • Timber frames from certified sustainable sources
  • Cornish air-cured concrete blocks made with secondary aggregate
  • No fossil fuelled heating sources
  • Renewable energy sources as standard, including air source heat pumps and solar panels
  • Low energy LED lighting throughout
  • White goods that are A-rated or above
  • Increased insulation in floors, walls and roof

We’re also taking account of new building regulations that are being phased in to further reduce energy use from all new homes in the future.