Our Services
Jump to: SAP Calculations | SBEM Calculations | Extension SAP Calculations | New Build EPC's | Excessive Glazing Calculations | Overheating SAP Calculations | U Value Calculations | Water Efficiency Calculations | Knowledge Centre
We provide professional SAP and SBEM calculations for residential and commercial developments across the UK — helping ensure full Part L compliance for your building project. Click on the icons below for more information
Buy SAP Calculations for New Build Projects from just £150. Special deals on multiple properties, We provide SAP calculations for new-build homes and apartments anywhere in the UK. Our accredited assessors ensure your design meets all Part L Building Regulation requirements from the earliest stage, helping avoid costly redesigns or delays. Whether you’re a developer, architect or self-builder, we deliver accurate SAP reports and compliance certificates quickly — often within 24–48 hours.
If you’re planning an extension, renovation or change of use, Building Control may request updated SAP calculations. We handle SAP assessments for extensions that include new heating systems, large glazed areas, or converted spaces. Our clear advice and fast turnaround make compliance simple — we’ll guide you step-by-step to ensure approval without stress.
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Our experienced team provides SBEM calculations for new commercial buildings, offices, retail units and industrial spaces. We help your design comply fully with Part L2A energy efficiency standards, offering guidance from planning through to final certification. With detailed reports, cost-effective recommendations, and quick delivery, we make SBEM compliance easy for contractors and design teams.
Homes with large glazed areas often struggle to meet Part L targets. Our Excessive Glazing SAP assessments accurately model solar gains and heat loss to prove compliance — even in challenging designs. We’ll work with your architect to balance performance, comfort and aesthetics, ensuring your project passes first time. We use the Simplified Calculation Method to demonstrate compliance.
We provide precise U-value calculations for walls, floors, roofs and glazing. Accurate U-values are essential for SAP and SBEM compliance, and we use manufacturer data to ensure the best possible performance. Save time and avoid guesswork — send us your drawings or construction details, and we’ll handle the rest.
New Part O regulations require proof that your design limits summertime overheating. Our simplified overheating calculations assess glazing ratios to ensure your design meets the standard. Whether you’re a developer or homeowner, we’ll provide fast results and practical solutions for compliance.
All new dwellings must demonstrate compliance with water efficiency targets under Part G of the Building Regulations. Our water use calculations assess flow rates, fittings and overall consumption to confirm compliance. It’s a quick, affordable service that completes your SAP pack in one go.
Generally, every new home or Commercial unit requires an Energy Performance Certificate (EPC) before completion. Because EPCs are generated directly from your SAP or SBEM calculations, we can provide them at the same time — saving you time and money. Our EPCs are fully lodged with the national register and accepted by Building Control throughout the UK, and audited by a Government Approved Body.
Whether you’re developing a single dwelling or a large site, we’ll deliver your EPC and compliance pack together, ready for sign-off.
Our Knowledge Centre is where we share practical advice and updates on SAP, SBEM and Building Regulation compliance. You’ll find step-by-step guides, regulation changes, and tips to help you design energy-efficient buildings that pass first time.
We keep every article clear, relevant, and based on real project experience — perfect for architects, builders and homeowners who want to understand the process.