
Part L Compliance Experts
Part L Compliance refers to building standards that aim to improve the energy efficiency of new and existing buildings in the UK. Part L applies to both residential and commercial properties, setting out specific requirements for insulation, heating systems, and ventilation.
Navigating the complexities of Part L Compliance is essential for any construction or refurbishment project in the UK, and GBE can guide you through every step. As a crucial section of the Building Regulations, Part L focuses on the conservation of fuel and power, directly impacting your building’s energy performance and environmental footprint.
With the latest updates to Part L aiming for significant reductions in carbon emissions for new and refurbished properties, ensuring your project meets these stringent standards is more critical than ever. GBE can help you understand and implement the specific requirements.

SAP10 Part L Compliance EPC
Building Regulations Approved Document Part L: Conservation of Fuel and Power 2021 stipulates that a Design Stage Part L Compliance Report must be submitted to building control before construction commences.
Following the completion of construction, an As-Built Part L Compliance Report and the Energy Performance Certificate (EPC) for the building should be submitted to building control and lodged on the HMRC public record.
Our On Construction Part L Report and EPC service can help deliver a compliant build in terms of the latest version of Part L of the Building Regulations.

SBEM Part L Compliance EPC
If you are renting, selling, or building new commercial premises, you need a Non-Domestic EPC. EPCs are valid for 10 years from the date of submittal.
An NDEA (Non-Domestic Energy Assessor) will assess the energy outputs of your building and use the calculation model SBEM to produce your Regulation Compliance Report and EPC.
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Working with GBE
What sets us apart is our capability to guide clients through the complex landscape of building safety regulations, particularly those mandated for high-risk buildings following the 2021 regulatory changes.
We provide a holistic approach to smoke vent control, covering every stage from initial design to ongoing maintenance. This ensures a seamless experience, as there is no need to coordinate with multiple vendors or service providers.
Our team possesses in-depth knowledge and expertise in navigating building safety regulations, particularly those related to high-risk buildings. We stay up-to-date with the latest regulatory changes and ensure that our solutions are fully compliant with these requirements.
We understand that navigating regulatory processes can be a daunting task. So, we offer personalised guidance and support to our clients, helping them understand the regulatory landscape and ensuring that their smoke vent control systems meet all necessary compliance standards.
Our clients know that their smoke vent control systems not only meet regulatory requirements but are also designed and installed to the highest standards of quality and reliability. Our end-to-end solution streamlines the process, saving time, effort, and potential headaches associated with compliance and maintenance.
Our comprehensive approach to smoke vent control, coupled with our expertise in regulatory compliance, helps minimise the risk and liability for our clients. We take proactive steps to ensure that their buildings are safe and compliant, reducing the likelihood of fines, penalties, or legal issues arising from non-compliance.
![]() | Sam Travis-Cavell | Head of Building Environments | Contact |
![]() | Keith Plowman | Technical Consultant | Contact |
![]() | Srinivas Sarath Thagapillai | Graduate Building Services and Sustainability Engineer | Contact |
With a decade of experience in the construction industry and a diverse background including roles as an MEP Design Engineer, Sustainability Consultant, Contractor, Sole-trader, and Business Owner, Sam has developed a passion for sustainable design, responsive customer service, and believes that a collaborative teamwork approach produces the best solutions.
Keith served 18 years in the RAF Fire & Rescue Service both in the UK and abroad, working his way up to Watch Manager and Training Manager. During this time, he completed an engineering degree and joined Global in 2023, excelling with his innovative approach to problem solving, building safety and compliance, and utilising new technology.
Sustainability-focused Professional with a Master’s in Low Energy Building Services Engineering and a Bachelor’s in Architecture. Committed to delivering sustainable, high-performance buildings that align with environmental goals and client needs.
Part L Compliance Enquiry
Part L of the Building Regulations states that all new buildings in England and Wales must meet specific energy and carbon emission standards. SBEM calculations are instrumental in proving that these standards are met. Enquire today with GBE to see how we can support you with your Part L Compliance.

Frequently Asked Questions
Building Regulation Approved Document Part L: Conservation of Fuel and Power sets out rigorous energy consumption, carbon emission, and creating fabric standards to which new buildings must be built.
Failing to comply with Part L can result in fines and/or carbon offset payments.
Buildings can be differentiated into 3 categories, domestic, non-domestic and public.
In England, Wales and Northern Ireland, SAP10 is the calculation methodology used to generate Energy Performance Certificates (EPCs) and confirm compliance with Approved Document Part L of the Building Regulations, for dwellings also known as domestic buildings.
It is worth baring in mind that landlord areas in a block of flats, require a SBEM Part L Compliance Energy Assessment (non-domestic) and not SAP10 Part L Compliance Energy Assessment (Domestic).
SBEM stands for Simplified Building Energy Model and is the equivalent for non-public commercial buildings, also known as non-domestic buildings. Depending on the complexity of the building, non-domestic buildings can be categorised as Level 3 (simple), Level 4 (more complex) or Level 5 (complex).
Public buildings require a display energy certificate (DEC) requiring a Operational Rating (OR) calculation to be undertaken.
More often than not, Part L compliance for a new house will cost, on average, about £200-400 excluding VAT. However, this is dependent on the complexity of the dwelling’s geometry and the MEP building services systems.
For a block of flats, Part L compliance will depend on the number of flats, the variety of flat types, the building’s geometry, and the complexity of the MEP building services systems. Contact us if you would like a quote for your block of flats.
A Level 3 SBEM Part L Energy Assessment will typically cost between £2,500 and £ 4,500, excluding VAT. VAT, and a Level 4 Part L Energy Assessment will cost between £4,500-7,500. Again, this depends on the complexity of the building’s geometry and the MEP building services systems.
If you are building something new, you legally require a Design Stage Part L Compliance Energy Assessment at the pre-construction stage before construction has started. At handover, an As-Built Part L Compliance Energy Report will need to be submitted for Building Control approval, and the EPC for the building will be lodged on the EPC Register.
It is a legal requirement that a Design Stage Part L Compliance Energy Assessment is to be submitted to Building Control; however, it is recommended to do this at the Planning Stage or RIBA Stage 2.
An EPC is valid for 10 years.