If you’re planning a home extension, renovation or new build, you may be asking: do you need drawings for planning permission? In almost all cases, the answer is yes. Detailed, scaled drawings are a fundamental part of most planning applications in the UK.
However, the type of drawings required, and the level of detail expected, can vary depending on your project and your local authority’s rules. In this article, we’ll explain what’s typically needed, when professional help is advisable, and how to avoid the most common pitfalls.
Extension above by Charles, architect in West Midlands. See his full profile and shortlist his studio for your project here.
Are Drawings a Requirement for Planning Permission?
Yes, whether you’re submitting a householder planning application or a full planning application, you will almost certainly need to provide architectural drawings. These allow your local planning authority to understand exactly what you’re proposing and how it will affect the surrounding environment.
Typical planning drawings include:
- Location Plan (usually at 1:1250 or 1:2500 scale)
- Site / Block Plan (typically at 1:200 or 1:500)
- Existing and Proposed Floor Plans
- Existing and Proposed Elevations (front, side and rear views)
- Roof Plans (where relevant)
- Sections or Cross Sections (if necessary for understanding changes in levels or height)
Still unsure about whether you need a professional? Read: Do I need an architect for an extension?
What Should Planning Drawings Include?
To pass the validation process, your drawings must meet certain technical and presentation standards. Typically, they should:
- Be drawn to recognised metric scales (e.g. 1:50 or 1:100)
- Clearly differentiate between existing and proposed works
- Include accurate dimensions and annotations
- Show the relationship to neighbouring properties and site boundaries
- Be legible, clear and submitted in the correct format (usually PDF)
⚠️ Always check with your local planning authority before submission. Each council has its own validation checklist outlining exactly what is required. Failing to meet these standards may result in your application being delayed or rejected outright.
Check Local Planning Requirements
Planning validation requirements can differ slightly between local authorities. While many follow national guidelines from the Planning Portal, some councils ask for additional documents depending on your project type and location.
Before submitting your application, make sure to:
- Download your local council’s validation checklist
- Review any conservation or heritage-specific policies
- Contact the planning department if you’re unsure
A professional who has worked with your local authority before will likely be familiar with these nuances. Read more: Do I need an architect for a planning application?
Drawings for Conservation Areas or Listed Buildings
If your property is in a conservation area or is a listed building, you’ll have additional obligations. Drawings in these cases often need to include:
- A detailed Heritage Statement
- Material specifications and design justifications
- Elevations that reflect traditional styles or local character
Planning applications in protected areas are held to a higher standard, and working with a conservation specialist is highly recommended. You can find one on Design for Me here.
Can I Do the Drawings Myself?
Technically, yes – you don’t have to hire an architect or designer. However, your drawings must still meet professional standards. In practice, many DIY submissions are rejected or delayed due to incorrect scale, poor detail or missing context.
Even if you only engage a professional for the planning phase, their experience can save you time and reduce the risk of rejection. Learn more: Do I need an architect for a renovation?
Who Can Prepare Planning Drawings?
You don’t necessarily need an architect. The key is choosing someone with the right experience and a good track record with your local authority. Your options include:
- Architects – ideal for design-led or complex projects
- Architectural technologists – experts in building design and technical detailing
- Planning consultants or technicians – experienced in preparing compliant submissions
Most professionals break down their fees into stages – so you can choose to work with them just for planning, without committing to the entire project. Read more: When should you hire an architect?
Use Design for Me to find vetted professionals matched to your project, budget and location.
Conclusion
Do you need drawings for planning permission? In almost every case, yes – and the quality of those drawings plays a big role in your application’s success. They must be technically accurate, to scale and clearly demonstrate the changes you want to make.
While it’s possible to create them yourself, many homeowners find it’s worth investing in a professional who knows what the council expects. At the very least, make sure to check your local validation checklist before you submit anything to avoid costly delays.
If you’re ready to get started, find a design professional on Design for Me to help you create the right drawings for a smooth planning process.
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Looking for a trusted architect near you? Design for Me matches homeowners with independent architects for extensions, renovations, and new builds.
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