Permitted Development

We are Urban Archiworx Ltd, providing you with affordable and faster architectural plans for approval for planning permission & building control across the UK.

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What are permitted development rights?

As a homeowner, you have the freedom to undertake specific types of home improvement projects without the requirement of obtaining planning permission. These are referred to as ‘permitted development rights’.

However, it’s important to note that any construction work carried out under permitted development must adhere to certain standards and criteria, including limitations on the maximum size of extensions and loft conversions. Fortunately, these limitations are quite generous, offering ample opportunities to enhance your living space and upgrade your home without the hassle of planning permission.

We will explore the various home extension and renovation projects permissible under permitted development rights in England.

Parliament oversees development regulations instead of local authorities, and distinct regulations are in place for each devolved nation. You can find out which permitted development rules apply in your area by referring to the provided links.

When undertaking any form of construction or development on your property, it is important to be aware of the concept of permitted development and the significance of obtaining a certificate of lawfulness. Permitted development refers to certain types of building work that can be carried out without the need for planning permission. This includes minor alterations to your property such as small extensions or conversions.

Certificate of Lawful use or Development

However, it is crucial to ensure that the proposed work falls within the parameters of permitted development guidelines to avoid any legal issues in the future. This is where a certificate of lawfulness comes into play. This document serves as proof that the proposed work is lawful and does not require planning permission.

To obtain a certificate of lawfulness, you will need to provide detailed architectural drawings of the proposed development, showcasing its compliance with permitted development rules. These drawings are essential in demonstrating how the project aligns with legal requirements and can help expedite the approval process.

By understanding and adhering to permitted development regulations and obtaining a certificate of lawfulness with accurate architectural drawings, you can proceed with your construction project confidently and legally. Remember, seeking professional advice from architects or planning consultants can also help navigate through these processes smoothly.

What can I do under permitted development rules?

There are limitations in place that govern both the size and external appearance of your extension. This is due to the strict guidelines of permitted development aimed at ensuring harmony with the local surroundings. These rules also aim to prevent any adverse effects on your neighbors, such as obstructing their light. Below are the regulations that pertain to permitted development projects in England:

Our process


Start by consulting with one of our team to discuss your project requirements, objectives, and any constraints or regulations that may apply. Then a site survey will be conducted


A conceptional design will be drafted. Where one our architectural designers will design a detailed planning drawings​, that will include site plans, sections & floor plans.


Prepare and submit your planning application, including the planning permission drawings, to the relevant local planning authority. Be sure to include any required forms, fees, and supporting documents as specified by the authority.


If your planning application is approved, you will receive planning permission to proceed with your proposed development. You can then use the approved planning permission drawings to obtain building regulations approval and begin construction