Changes to the Building Regulations will come into effect on the 15th of June. Under the new rules, CO2 emissions from new homes in England will need to be 30% lower than currently allowed while all other new buildings, such as offices and shops, will need to produce 27% less emissions.
In addition to the new Building Regulations, the Government has also published 5 updated and new Approved Documents which cover the conservation of fuel and power, ventilation requirements and overheating. These are:
- Approved Document L, volume 1: dwellings (Conservation of fuel and power)
- Approved Document L, volume 2: buildings other than dwellings
- Approved Document F, volume 1: dwellings (Ventilation)
- Approved Document F, volume 2: buildings other than dwellings
- Approved Document O (Overheating)
Under the new rules,
- Maximum limits have been set to the amount of glazing permitted on new residential buildings
- New homes must be designed to reduce overheating
- Energy efficiency in new homes will be measured against the Fabric Energy Efficiency Standard
- New and replacement heating systems will be limited to a maximum flow temperature requirement of 55°C
- New or replacement heating system designs will need to accept low-carbon heating in future, including integrating the latest Ecodesign appliance benchmarks
- Non-residential buildings will need to be designed with sufficient ventilation to prevent the spread of airborne viruses
- Part O introduces measures to ensure overheating strategies can be safely operated by residents
- The amount of noise and pollution near the home needs to be taken into consideration when devising overheating strategies
- Technical guidance on the installation of electric car charging points has been issued
The new Building Regulations are part of a Government drive to achieve Net Zero by 2030 and are widely seen as a stepping stone to the Future Homes Standard, which is currently under consultation and will be introduced in 2025.
A transition period will be in place which exempts Planning Permission applications, building notices or initial notices that were submitted before the 15th of June. These will still be allowed to be built as long as actual building work begins before the 15th of June 2023.
After these dates, the construction industry will be compelled to work towards the eventual, long-term aim of all homes producing 75-80% less carbon.