The government should help accelerate digitalisation of the construction industry to improve its performance and its environmental impact, according to a new report from Green Alliance, on behalf of its Tech Task Force.
The government should work with industry to ensure there is better data on building performance and make up, driving use of new digital ‘material passports’ to track and reuse building resources, and it should allocate £300 million for a new programme of whole building retrofits, using offsite advanced manufacturing technology.
The report, Smart building: how digital technology can futureproof UK construction, highlights that upgrading and repurposing old buildings creates additional jobs in construction, while also helping to meet housing demand. It also significantly reduces the industry’s environmental impact.
New buildings benefit from zero rate VAT, while 20% VAT is levied on repair and renovation work.
This discrepancy limits the renovation and upgrade of existing buildings for a net zero future, and encourages demolition and new build, which has a higher carbon and resource footprint.
The UK has a legal requirement to create a net zero carbon economy by 2050. Eighty per cent of the buildings that will exist in 2050 are already built. Bringing VAT for renovation in line with that for new build is a necessary first step in upgrading more of the country’s existing building stock for low carbon living, says the report.
By investing £300 million in a new programme of whole house energy efficiency retrofits, the UK could scale up supply chains for digitally enabled retrofits and deliver many more net zero homes in one step.
This technique uses a combination of digital technologies to improve the accuracy and efficiency of installations, and can benefit from economies of scale to permanently reduce costs.
Promoting digitally enabled retrofits would also help to boost the construction sector’s low productivity levels and create more, highly skilled jobs across the country. Firms that use high tech, offsite manufacturing in this way have achieved up to 75% higher productivity compared to conventional construction methods.
The report also advocates new ‘material passports’, which provide a digital record of building components, and their integration in ‘digital twin’ models, which can track information about a building’s make up and performance to support improvements and better resource reuse. These digital tools are already in use in other countries, for example in the Netherlands and Singapore.
Made with valuable resources and shaping the fabric of communities, the UK’s existing buildings are assets that should not only be conserved but upgraded for a net zero future.
Caterina Brandmayr, senior policy analyst at Green Alliance, said: “As the UK looks to build back better post-COVID, businesses should be investing in those smart low carbon supply chains that will be in high demand in the future and shield the sector from further disruptions down the line.
“To make this a reality, the government should start by removing the tax disincentives that are stopping the renovation and repair of existing buildings, and scale up deep retrofit solutions that will create high skilled jobs across the country.”
Rodney Turtle, VP for public policy and government affairs at Schneider Electric, said: “Made with valuable resources and shaping the fabric of communities, the UK’s existing buildings are assets that should not only be conserved but upgraded for a net zero future.
“Doing so, with the help of novel digital technologies, is a prime opportunity to revitalise the construction industry after the current crisis.”