This currently only applies if you are extending a home in Wales, or if you are working on a large commercial building in England or Wales.
Consequential Improvements require you to make improvements to the existing building to improve the overall efficiency while you are constructing an extension.
Residential Extensions in Wales
If you are building an extension in Wales, you will need to ring-fence part of your total budget to make sure the roof insulation in the existing house is at least 250mm thick, you’ll need to make sure the hot water cylinder is sufficiently insulated, and if the dwelling has an empty or partially filled wall cavity, you’ll need to inject additional insulation to reduce heat loss.
There are conditions on the above (such as economic viability), so contact us for more specific information, and to check if all three of the above improvements are required on your development.
Residential Extensions in England
There have been discussions and consultations for several years about making consequential improvements a requirement in the domestic sector in England, but so far this idea has been put on hold.
Commercial Extension in England and Wales
If you are extending a large commercial building in England or Wales (larger than 1,000sqm before the extension), consequential improvements may apply here also.
In this scenario, you need to put aside 10% of your total building costs to improve the energy efficiency of the existing building. This could include upgrading heating or cooling systems, changing to more efficient lighting, replacing windows, increasing insulation or installing renewable technology.
The choice is yours, but clearly some improvements will be more financially sensible to make than others. If the building already has an Energy Performance Certificate, we’d suggest you look through the Recommendations section before you choose which bits to upgrade. If it doesn’t, we can run through some of most sensible options with you.