All new dwellings are required to have both design stage and as built stage SAP assessments under Approved Document L of the UK Building Regulations (Conservation of Fuel and Power). It’s vital that a design stage SAP assessment is undertaken before construction starts to ensure that the dwelling will comply with the regulations. An EPC (Energy Performance Certificate) will be provided on completion along with the As Built SAP report. It’s not possible to provide an EPC for a new dwelling without first having completed a SAP assessment.
When a building that is currently not used as a dwelling, such as a barn, is converted to form a new home, a SAP assessment must be carried out in order to demonstrate compliance with Approved Document L of the UK Building Regulations (Conservation of Fuel and Power). The regulations for conversions are not as stringent as those for new build homes, however there are still minimum requirements for thermal performance that must be met. As with new build homes, we can provide an EPC on completion.
Change of use doesn’t necessarily mean a conversion from non-domestic to domestic. It can also come into play when changing the number of dwellings within a building, for example converting a house into flats. Again, SAP calculations are undertaken to demonstrate compliance with the regulations and EPCs can be provided on completion of the newly formed dwellings.
Where extensions are overglazed, i.e., the total area of windows and doors in the extension comes to more than 25% of it’s floor area, SAP calculations can be used to demonstrate compliance with Approved Document L of the UK Building Regulations.
For developments of multiple dwellings, usually 10 or more, various local authorities stipulate that the energy efficiency of the proposed dwellings have to meet standards above and beyond those of Approved Document L of the UK Building Regulations in order to be considered for planning permission. In these circumstances, SAP calculations are undertaken at planning stage to demonstrate compliance with the requirements of the individual local authority concerned and presented in the form of an energy statement.
We can offer air tightness testing with our partners at New Build Air Testing. NBAT have ATTMA approved testers and offer prompt, efficient and reliable service. Please contact us for more information.
We can offer overheating assessments to demonstrate compliance with Approved Document O of the UK Building Regulations using the simplified method. All dwellings commenced after June 2022 will need to be assessed for Part O compliance. We can provide Part O reports and compliance checklists and offer advice where the initial design requires amendment.
Contact Home Energy Modelling today to discuss your project and ensure full compliance with the latest energy performance regulations. Whether you’re a developer, architect, builder, or homeowner, our knowledgeable team offers expert guidance, bespoke solutions, and end-to-end support for all aspects of energy modelling.
From the first consultation through to final certification, we deliver a smooth, efficient process backed by technical expertise and a commitment to quality.
Partner with us to create smarter, more energy-efficient homes built for the future.
info@homeenergymodelling.uk
