The Complete Guide to Architectural Drawings for Planning Permission vs. Building Regulations: What Homeowners Need to Know
If you’re planning a home extension, loft conversion, or a new build, chances are you’ve heard the terms planning permission and building regulations. But did you know that each requires a different set of architectural drawings? Understanding the difference between the two—and what drawings you need for each—can save you time, money, and a lot of stress.
In this guide, we’ll break down everything you need to know about architectural drawings for planning permission and building regulations approval.
What Is Planning Permission?
Planning permission is the approval you need from your local council to carry out certain types of building work. It focuses on the external appearance and impact of your project—such as size, shape, materials, and how it fits into the surrounding environment.
When Do You Need It?
• Extensions beyond permitted development rights
• Loft conversions with dormers or major roof alterations
• New builds or significant changes to a property’s appearance
• Converting a building’s use (e.g., residential to commercial)
What Are Planning Drawings?
Planning drawings are focused on conveying the design and visual impact of your proposal. They’re typically less detailed than those used for building regulations.
Planning Drawings Usually Include:
• Existing and proposed floor plans
• Existing and proposed elevations
• Site location plan
• Block plan (showing your property in relation to its surroundings)
• Roof plan (if applicable)
These drawings must meet local authority standards and clearly communicate your intentions to planning officers.
What Is Building Regulations Approval?
While planning permission considers how your project looks and affects the environment, building regulations ensure the construction is safe, structurally sound, and energy efficient. It’s about how the building is built, not just what it looks like.
Key Focus Areas:
• Structural stability
• Fire safety
• Insulation and energy efficiency
• Drainage and ventilation
• Access and usability
What Are Building Regulations Drawings?
These are much more technical than planning drawings. They form the basis for construction and compliance with UK Building Regulations.
Building Regulations Drawings Typically Include:
• Detailed floor plans with dimensions and notes
• Construction details (e.g., wall build-ups, insulation types)
• Sectional drawings
• Structural information (can involve input from an engineer)
• Notes on compliance (Part A – Part P of Building Regs)
These drawings are submitted either to your local council’s Building Control or an approved private inspector.
Do You Need Both?
In many cases, yes. Planning permission is typically required before building regulations approval. You submit your planning drawings first, and once approved, move on to the more detailed technical stage.
Important: Some smaller projects fall under permitted development, meaning you might not need planning permission—but you will still need building regulations approval.
Why It Matters to Get It Right
Submitting incorrect or incomplete drawings can delay your project or even result in rejection. That’s why working with professionals who specialise in both planning and building regs drawings is so important.
At Draw and Plan, we offer a seamless service—from initial concept plans for planning permission to fully detailed construction drawings for building regulations approval. We stay up to date with local planning policies and the latest Building Regulations to give you the best chance of fast approval and smooth progress on site.
Final Thoughts
Understanding the difference between planning permission and building regulations—and the drawings required for each—is key to a successful project. Both serve different purposes, but together they form the foundation of any lawful, well-built structure.
If you’re unsure what you need, we’re here to help. Contact us today for a free consultation and let’s get your project off the ground.
Disclaimer: This article is for general informational purposes only and does not constitute legal or professional advice. Always consult relevant professionals and local authorities before undertaking any development or change of use.