We all know that Part L forms an important part of the Building Regulations and many developers and contractors out there are dedicated to sustainable building but we also know that all the jargon and paperwork can sometimes make understanding and achieving Part L a difficult task. We're here to help you make sense of it all. Let us remove the uncertainty and provide you with clear, commercial and practical advice on how you can best conform to the current regulations.


With substantial experience gained in the house building industry, our in-house team of experts understands the importance of the completion stage and the specific requirements of the CML stage, from SAP calculation to issue of the Code for Sustainable Homes or Air Tightness Certificate.

We rely on The LK Group to provide an accurate and cost-effective consultancy service. When it comes to advice on sustainability and adding value, our bids always benefit when you’re on board.

Ian Fletcher, Senior Design Manager, Willmott Dixon Housing Limited

Our no-nonsense, friendly professionals can advise you on any aspect of Part L of the Building Regulations. We provide superior quality SAP Calculations, Code for Sustainable Homes assessment, Air Tightnness Testing, Energy and Sustainability Reports, Energy Performance Certificates and SBEM calculations. Through our retro fit consultancy service we can also advise the most efficient way to achieve your energy objectives on existing buildings, based on a fabric first approach.

Case Studies


The LK Group was instructed by Rowland Homes to undertake Air Tightness Testing on the new

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Our client instructed The LK Group to complete a program of phased air tightness tests ove

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A vacant property in Stoke-on-Trent was due for refurbishment by Bullock Construction Ltd

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The LK Group was commissioned to provide SAP modelling for house types on a new build soci

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The LK Group was appointed by Taylor Wimpey to complete SAP calculations and SAP modelling

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We were asked to undertake the Design SAP calculations on a development of four terraced h

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