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Permitted Development Projects

Permitted Development means you can build an extension without obtaining planning permission first. Not all properties can benefit from this, such as Flats or houses which have had their rights removed. For peace of mind, we can still obtain a Certificate for permitted development from the Council. If you are unsure then we can advise you. 

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Permitted Development: Single Storey Side Extension


This service offers you a side extension design that doesn't require planning permission. If you are looking to build a side extension that is no more than half the width of your house then this service may be ideal for you. Subject to other planning legislation. 

Our side extension process 

We conduct a thorough survey of your home, brainstorm design ideas with you and use our extensive experience for your permitted development project.

Survey & Existing Drawings

We will survey your property and discuss your single storey extension design. For added peace of mind, we ensure the Surveyor you meet at your home for your permitted development will continue with your project from start to finish. 


We will always be clear and upfront with you, and we do require you to agree to proceeding with the permitted development service before we can come out and visit your property. We require the Instruction to Proceed Form to be signed on the day but we will only ask for the full-service fee once the existing drawings (how the house looks before design works) have been sent to you. This ensures you can see the quality of our work before paying the full-service fee (see Terms and Conditions for full details).      


The existing drawings will be ready in 5 working days from the Survey

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Design Drawings

Once the full-service fee is settled, we will design the first draft drawings ready for your review. We will base the first draft on any ideas you had at the survey visit, and combine them with our experience to create a single storey side extension design that meets your needs. 

The design will continue to be developed until you are happy for it to be finalised (subject to T&Cs), giving you the flexibility to consider all options and ensuring the design is perfect for you.   

To create a single storey side extension that reflects your design requirements, our designs can include brick, render, timber cladding, tiled pitched roofs, flat roofs, bi-fold doors, roof lanterns and skylights. 


The first draft design drawings will be ready in 5 working days from payment

Certificate Submission

When the permitted development design is finalised, we always recommend our clients to allow us to submit a Lawful Development Certificate to your Local Council. This provides peace of mind to you as these Certificates are legal documents that prove you did not require planning permission, and are useful if you sell the property in the future. 

We do not charge for submitting it, but the Council do charge an application fee of £103 plus their service charges. For ease, we can provide you with a website link so you can pay this directly to the Council. 


The submission can be made in 5 working days from the drawings being finalised

Why use Extension Drawings Ltd for permitted development side extensions? 

With several years of experience within the team, and multiple qualifications, Extension Drawings LTD offer top quality service, with upfront and clear pricing, so you can make the best decision for your home. With the bonus of unlimited design changes included for every project (subject to T&Cs), you can be assured that you get the best side extension for you! 

Building Regulations

We also offer your project to be upgraded for Building Regulations Approval, please click the link below for more information: -


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We cover these areas: -


If you're outside this area we may still be able to accommodate you, simply contact us to find out more.

Check out our Video Below!

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