---
title: Everything You Need To Know About Wraparound Extensions
description: From planning and design to benefits and costs, this guide explores how wraparound extensions can maximise your home's space, functionality, and style.
---

[RISE Design Studio Blog: Modern Architecture & Design Insights ](https://www.risedesignstudio.co.uk/blog)

# [Everything You Need To Know About Wraparound Extensions](https://www.risedesignstudio.co.uk/blog/comprehensive-guide-wraparound-extensions)

 Written by [Sean Ronnie Hill](https://www.risedesignstudio.co.uk/blog/author/sean-ronnie-hill) | Dec 4, 2024

**RISE Design Studio | Extensions**

Wraparound extensions are a fantastic way to add valuable living space, bring in natural light, and enhance the [aesthetics of your home](https://www.risedesignstudio.co.uk/residential-architecture-design). In this guide, we’ll explore the key benefits, types of wraparound extensions, and essential considerations for planning and building one. Whether you’re aiming to expand your home or update its look, a wraparound extension offers a versatile and impactful solution.

### **What is a Wraparound Extension?**

A wraparound extension creates additional living space by combining two types of extensions:

1. **Side Infill Extension** – Encloses the area between the side of a projecting outrigger and the boundary wall.
2. **Rear Extension** – Adds space to the back of the outrigger.

Together, these form an L-shaped design that ‘wraps around’ the existing structure, significantly increasing usable space.

 

## **Costs of A Wraparound Extension**

#### **1. Amount of New and Refurbished Space**

Integrating the new extension with the existing ground floor often requires reconfiguring layouts. On average, clients should budget **£2,500 - £3,500 + VAT per square metre** for construction, including finishes, fixtures, and fittings.

#### **2. Structural Work**

Removing supporting walls and replacing them with structural solutions (e.g., steel or engineered timber) is necessary to [merge old and new spaces](https://www.risedesignstudio.co.uk/blog/legacy-and-innovation-in-architecture). Costs vary based on the level of demolition and structural complexity. Strategic design, such as including structural posts, can optimize both space and budget.

#### **3. Specification Levels**

Specification choices can have a significant impact on costs. Prioritise high-value elements like flooring, glazing, or lighting that enhance the overall design and experience.

#### **4. Glazing Ratio**

Glazing can dramatically influence cost and ambiance. Whether you opt for large glass panels or a more understated approach, consider how glazing enhances natural light and connects indoor spaces with the garden.

## **Do You Need Planning Permission?**

Yes, planning permission is required for wraparound extensions. While individual components (side infill and rear extensions) may fall under permitted development, their combination typically exceeds these allowances.

## **Timelines for a Wraparound Extension**

- **Design and Planning**: Allow approximately 8 weeks for planning approval.
- **Construction**: Expect a 4–6 month build phase, depending on the complexity of the project and the contractor’s expertise.

## **Benefits of a Wraparound Extension**

- Maximises floor space while preserving outdoor areas.
- Utilises underused side alleys or pathways.
- Enhances connection to the garden.
- Brings more natural light into your home.
- Creates space for functional rooms like playrooms, utility spaces, or additional WCs.
- Opens up and transforms kitchen or living areas.

These advantages make wraparound extensions particularly popular in urban areas where every square metre counts.

## **How to Find the Right Architect**

A [successful wraparound extension](https://www.risedesignstudio.co.uk/residential-architecture-design) begins with a skilled architect. Start by preparing a detailed brief outlining your goals, constraints, and budget. Shortlist architects based on their experience and expertise in similar projects. Finally, establish clear communication and expectations to ensure a smooth collaboration.

Need help finding the right architect? Check out our [detailed guide to choosing an architect](https://www.risedesignstudio.co.uk/blog/finding-the-right-architect).

At **RISE Design Studio**, we specialise in creating sustainable, innovative, and tailored designs that enhance the way you live. [Contact us today](https://www.risedesignstudio.co.uk/contact-us) to discuss your vision for a wraparound extension.

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