Part L Calculations & EPCs

Potentially. If your refurbishment is resulting in a change of use, such as office to residential, or even a single dwelling to multiple dwellings, then you will need to get input from a Part L consultant to advise on construction types and building services strategy.

As early as possible is best to avoid any unwanted surprises later on. If you are constructing a new building you may have needed an Energy Statement, which will have provided advice on achieving Part L and any required betterment above it. If you don’t need an Energy Statement at planning, it is still recommended to consult a Part L consultant as this will affect the building constructions, building services and potentially glazing areas.

Typically, we need architectural drawings and details of the building's construction, insulation, windows, doors, heating and hot water systems, lighting, ventilation and any renewable technologies. The more complete the information provided, the more accurately we can assess the building. To produce an EPC we will also required detailed photographs of the construction process.

If our initial calculations show that the proposed design does not meet Part L, JC Sustainability can identify areas where improvements may be needed. This could include upgrading insulation, improving glazing, changing heating systems or incorporating renewable technologies.

This varies on the size and complexity of the project, as well as the number of calculations required. Most projects can be completed within 1-4 weeks of receiving all the required information.