A side return extension is a popular method for expanding space in Victorian terraced houses, particularly those with an L-shaped garden formed by a narrow strip of land alongside the property. By extending into this under-utilised area, homeowners can create a more spacious and brighter interior, often transforming the kitchen or living areas. For inspiration and design ideas, consider exploring examples from architects on Design for Me.
Side return extension above by Tim, architect from Harborough, East Midlands. Click here to see his full profile and shortlist him for your home project.
How much does a Side Return Extension Cost?
If you’re looking for a rough cost of a side extension, you can see our other article here which approximates a construction budget: https://designfor-me.com/project-types/extensions/much-side-return-extension-cost/
Side return extension costs per square metre:
In London, a side return extension can cost anywhere between £3,900- £6,500 per square metre (+VAT and professional fees).
Outside London, the cost can vary between £2,600 – £5,200 depending on where you are in the country (+VAT and professional fees).
Incorporating a new kitchen into your extension will add to the overall expense. According to a survey of architects and designers on Design for Me, the expected cost of a new kitchen averages around £13,000, though this can vary significantly based on specifications and finishes. (Kitchen cost guide).
Planning Permission and Regulations
Many such extensions fall under permitted development rights, provided they meet certain conditions, such as not exceeding half the width of the original house and adhering to height restrictions. (Find out more about planning permission) However, regulations can change, so it’s advisable to consult with a professional or your local planning authority to ensure compliance.
Party Wall Agreement
If your extension involves work on a wall shared with an adjoining property, known as a ‘party wall’, you may need to obtain a party wall agreement under the Party Wall etc. Act 1996. This act provides a framework for preventing and resolving disputes related to building work on shared walls. Engaging a qualified architect or surveyor can help navigate this process smoothly.
Finding the Right Professional
Embarking on a side return extension project requires careful planning and the right expertise. Platforms like Design for Me can connect you with experienced architects and designers tailored to your project’s needs, ensuring a successful and well-managed extension.
Note: Construction costs and regulations are subject to change. Always consult with professionals and obtain up-to-date information before proceeding with your project.
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