Building Regulations Guides
Expert guides to help you understand UK building compliance requirements.
Our free guides break down the most important aspects of UK building regulations compliance into clear, practical advice. Written by our team of accredited assessors and technical experts, each guide is designed to help developers, architects, and contractors understand their compliance obligations and avoid common pitfalls. Browse the full collection below, or visit our blog for the latest industry updates.
Can I Build with 100mm Cavities?
Find out whether 100mm cavity walls still comply with building regulations, the U-value challenges, and what alternatives are available.
Read guide → air-tightnessWhat is a Good Air Tightness Test Result?
Find out what a good air tightness test result looks like, what scores you need under Part L, and how results affect your SAP calculations.
Read guide → home-energy-modelHome Energy Model vs SAP
Compare the Home Energy Model and SAP side by side. Understand the key differences, what's changing, and how the transition will affect your projects.
Read guide → building-regulationsCan You Put a Gas Boiler in a New Build?
Find out if you can still install a gas boiler in a new build under 2021 Part L regulations, what extra systems are needed, and the alternatives.
Read guide → building-regulationsWhat is the Home Quality Mark?
Learn what the Home Quality Mark (HQM) is, how the five-star rating system works, what it assesses, and why developers use it for new homes.
Read guide → home-energy-modelHome Energy Model Guide
Learn what the Home Energy Model (HEM) is, how it will replace SAP, the key changes it introduces, and what it means for your building projects.
Read guide → part-oPart O Overheating FAQs
Answers to the most common questions about Part O overheating requirements, who needs to comply, and how to pass using simplified or TM59 methods.
Read guide → water-efficiencyPart G Water Efficiency Guide
Everything you need to know about Part G water efficiency calculations, the 125 litres target, what's assessed, and how to achieve compliance.
Read guide → part-oPart O Simplified Method Explained
Complete guide to the Part O simplified method for overheating compliance, covering glazing limits, free areas, risk categories, and when TM59 is needed.
Read guide → air-tightnessHow to Pass an Air Tightness Test
Practical checklist and expert tips on how to pass an air tightness test first time, including common failures and preparation advice.
Read guide → building-regulationsRegulation 25A Guide
Understand Regulation 25A requirements, what the feasibility report covers, when it applies, and how to comply with this Part L obligation.
Read guide → sap-calculationsSAP Calculations for New Build Compliance
Complete guide to SAP calculations for new builds, covering Part L compliance, the two-stage process, what's needed, and how to achieve a pass.
Read guide → building-regulationsPassivhaus Standard Explained
Learn what the Passivhaus standard is, its key requirements for airtightness and energy use, and how it relates to UK building regulations.
Read guide → part-oTM59 Overheating Assessment Guide
Understand TM59 dynamic thermal modelling, when it's required for Part O compliance, the pass criteria, and what the assessment involves.
Read guide → building-regulationsThe Essential Guide to UK Building Regulations Compliance
Comprehensive guide to UK building regulations compliance covering Part E, F, G, L, and O, the compliance process, penalties, and professional support.
Read guide → sap-calculationsWhat Are SAP Calculations?
Learn what SAP calculations are, why they're required for UK building regulations, and how the Standard Assessment Procedure works for new builds.
Read guide → sbem-calculationsWhat Are SBEM Calculations?
Discover what SBEM calculations are, how they work for commercial buildings, and why they're essential for Part L compliance and EPC certification.
Read guide → building-regulationsWhat is a U-Value?
Understand what U-values are, how they're measured, the Part L requirements for walls, roofs, and floors, and why they matter for SAP calculations.
Read guide → epcWhat is an EPC?
Find out what an Energy Performance Certificate is, who needs one, how EPCs are produced, and what the ratings mean for selling or renting property.
Read guide → planningWhat is an Energy Statement?
Learn what an energy statement is, when one is needed for planning applications, what it includes, and how it demonstrates carbon reduction targets.
Read guide → sound-insulationWhat is a Sound Insulation Test?
Learn what sound insulation testing is, when it's required under Part E, how airborne and impact tests work, and how to pass first time.
Read guide → planningWhat is the London Plan?
Understand the London Plan energy requirements, the 35% carbon reduction target, Be Lean Be Clean Be Green, and what developers must do to comply.
Read guide → ventilationWhat is a Ventilation Test?
Learn what ventilation testing involves, why it's required under Part F, the extraction rates needed, and how to prepare your building for testing.
Read guide → planningWhat is a Sustainability Statement?
Discover what a sustainability statement is, when you need one for planning, what it covers, and how it differs from an energy statement.
Read guide → epcWho Needs an EPC?
Find out who needs an Energy Performance Certificate, when EPCs are required for residential and commercial properties, and what exemptions apply.
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