Thinking about expanding your home in London? A side extension could be the answer. Side extensions in London are a popular way to add space, value, and functionality. With limited land in London, side extensions maximise your property’s potential without eating up your garden space.

This guide explains what you need to know about side extensions in London.

What Is a Side Extension?

A side extension is an addition built to the side of a property. Unlike a rear extension, it uses space to the left or right of the house. It’s ideal for narrow or semi-detached homes. A side extension can add a new room, expand your kitchen, or even create an extra living space.

Side Extensions in London by NFA

Why Choose a Side Extension?

A side extension has many benefits. First, it adds valuable space to your home. In crowded London, every square foot matters. Second, a side extension can increase your property’s value. Buyers love homes with extra space. Finally, it allows you to stay in the area you love without moving.

Key Factors to Consider for side extensions in London

Before starting your side extension, consider the following:

  1. Space Available
    Assess the available space. Side extensions typically use alleyways or narrow side plots. Measure carefully to understand how much room you have.
  2. Budget
    Set a clear budget. Costs vary based on materials, size, and finishes. A typical side extension in London costs between £1,500 and £2,500 per square meter. Get quotes from several contractors.
  3. Planning Permission
    In some cases, side extensions need planning permission. Small extensions may fall under permitted development. However, rules depend on your area and the type of property. Always check with your local council.
  4. Design and Layout
    Think about the purpose of your new space. Do you need a bigger kitchen? An extra bedroom? Decide on a layout that flows with the existing house. Work with an architect for the best results.

Do You Need Planning Permission?

Planning permission is often required in London, especially in conservation areas or for listed buildings. The general rule is that a single-storey side extension may fall under permitted development. This means it doesn’t need planning permission. But, the extension must follow strict guidelines:

  • It must be single-storey.
  • This cannot be wider than half the original house width.
  • It cannot exceed 4 meters in height.

If your project doesn’t meet these criteria, apply for planning permission. It’s wise to consult your local planning authority before starting.

Building Regulations for Side Extensions in London

Even if your side extension falls under permitted development, it still needs to follow building regulations. Building regulations cover safety, insulation, and structure. You’ll need to meet standards in areas like:

  • Fire Safety: Proper fire doors and escape routes are essential.
  • Structural Stability: Ensure foundations, walls, and roofs are solid and stable.
  • Insulation: Meet energy-efficiency requirements to reduce heat loss.
  • Ventilation: Proper airflow prevents damp and mold.

Hiring a qualified architect or builder helps ensure compliance.

Common Side Extensions in London Styles

  1. Single-Storey Side Extension
    This is the most popular choice. It adds space without changing the home’s overall structure. A single-storey side extension is ideal for expanding kitchens, adding a small living room, or creating a utility area.
  2. Double-Storey Side Extension
    A double-storey extension adds even more space. However, it requires planning permission. This type of extension is great for adding both bedrooms and ground-floor space.
  3. Wrap-Around Side Extension
    A wrap-around extension combines a side and rear extension. It wraps around the side and back of the house, creating a large, open-plan area. This option transforms kitchens, dining rooms, and family areas.
  4. Conservatory-Style Side Extension
    Want more natural light? A conservatory-style extension with glass walls and roofs brings sunlight into the home. It’s perfect for adding a cozy lounge or dining area.

Benefits of a Side Extensions in London

  • Adds Space: London homes can feel cramped. A side extension opens up your space, adding extra square footage.
  • Increases Property Value: Extensions boost property value. Buyers pay more for homes with added space.
  • Enhances Living Comfort: With more room, you can create new spaces for relaxation or family time.
  • Maintains Outdoor Space: Unlike rear extensions, side extensions don’t take up your backyard.

Costs of a Side Extension

In London, costs vary. A basic single-storey side extension typically costs between £1,500 and £2,500 per square meter. Factors affecting cost include:

  • Size of the extension
  • Quality of materials
  • Design complexity

It’s essential to get multiple quotes. Budget for unexpected costs, too.

How Long Does It Take?

A side extension project usually takes three to six months. Planning permission adds extra time. A simple single-storey extension can be faster, but always allow extra time for potential delays.

Steps to Starting Your Side Extension Project

  1. Consult an Architect: They help design the extension to meet both your needs and regulations.
  2. Submit Planning Applications: If needed, submit applications to your local authority.
  3. Hire a Qualified Contractor: Look for experienced contractors with a solid reputation.
  4. Get a Building Inspector: They ensure the extension meets building regulations at every stage.
  5. Enjoy Your New Space: Once complete, enjoy the added space and value!

Final Thoughts

Side extensions are a smart way to expand your London home. They add space, improve property value, and enhance comfort. By planning carefully and following regulations, you can transform your property.