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House Extensions

If your home is feeling short on space, adding a single storey extension can give you valuable extra room. Whether it's a kitchen-diner, bedroom, bathroom or study, we have different types of house extensions and roof options to suit any home.

You can select from uPVC or aluminium windows and doors in different colours and styles. Our quote includes planning permission, a complete technical survey, and all the building work. We take care of everything, so you don’t need to worry.

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  • Solid tile roof extension with white uPVC French doors
    Solid roof extension with white uPVC French doors in open position
  • Traditional tile roof single story exension with aluminium bifold doors
    Single story extension with traditional tile roof and aluminium bifold doors
  • Gable end replica tile extension with French doors
    Gable end replica tile extension with French Doors
  • Solid panel roof extension with sliding patio doors
    Solid panel roof extension with sliding patio doors
  • Solid panel roof extension with uPVC French doors
    Solid panel roof extension with uPVC French doors
  • Dual anthracite grey extension with replica tile roof and French doors
    Dual anthracite grey extension with replica tile roof and French doors
  • Traditional tiled extension with white uPVC French doors
    Traditional tiled extension with white uPVC French doors
  • Replica tile extension conservatory with patio doors
    Replica tile extension conservatory with patio doors

A single storey extension is a solid-built extension attached to almost any part of the ground floor of your home. Every home extension is bespoke, creating a new space that seamlessly joins to the original house. Add extra space to an existing room or provide an entirely new room to your home.

Reasons to Choose a Single Storey Extension

  1. Planning Permission? Sorted

    Planning permission isn’t required for most single storey house extensions. If it is though, we organise permissions and complete planning applications, taking on the hassle so you don’t have to. It’s all included in your quote.

  2. Free Design Consultation

    We're here to help every step of the way when it comes to choosing windows, doors, and roofing for your extension. Our design consultant will visit your home to discuss your plans and best use of your new space.

  3. Long Guarantees

    We provide a 10-year insurance-backed guarantee for the windows and doors of your extension. These products also come with a 15-year guarantee for sealed glass units. If you sell your home, you can transfer the guarantees to the new owner.

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Regency extension with replica tile roof and dual golden brown bifold doors
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Types of House Extension

Your Anglian design consultant and surveyor will talk to you about the best way to extend your home. They consider structural points, such as groundwork, drainage, electrics, plumbing, and building regulations. All our extensions are bespoke, so if you can imagine it, we can create it.

    Gable end extension with replica tiled roof and bifold doors

    Rear Extension

    A single-storey rear extension creates more space at the back of your home. They are ideal for creating a kitchen-diner or garden room. Add bifold doors to create a seamless transition between your home and garden.

    Solid roof extension with aluminium bifold doors interior

    Side Extension

    Side extensions are a way to make the most of unused space at the side of your home. Enlarge your kitchen or add a convenient utility room. Make your space lighter and brighter with roof windows or French doors.

    Dark woograin extension with solid panel roof

    Wraparound Extension

    As the name suggests, a wraparound home extension wraps around the side and back of your property. You can add a new room or link rooms together to create a new indoor-outdoor space to use throughout the seasons.

Planning Permission for Home Extensions

Single storey house extensions are often classed as a ‘permitted development’. Permitted developments don’t need permission and their rules defined by your local authority. These rules can include not being within two metres of a boundary and the total area of the extension not exceeding half the size of the original house.

Our article on planning permission for conservatories and extensions is a useful guide to planning rules. However, it is always best to check with your local authority. When you choose Anglian for your project, we make things easier for you, taking care of the whole process, including any potential planning applications.

kitchen extension interior

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House Extension Roof Types

Complete the look of your house extension with your choice of roof, from beautiful tiling to solid panels. You can create a contemporary or more traditional feel to perfectly suit your home.

Replica tile harmony extension with French doors

Replica Tiles

Choose a replica tiled roof for your new house extension or as an upgrade for your existing Anglian conservatory. Replica tiles are our most affordable extension roof option. Because they’re lightweight, they are ideal for home extensions with more windows than wall supports.

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Edwardian extension with solid roof and solarglas panels

Real Tiles

An extension with real tiles is only available for new home extensions. You can choose from six different tile colours, from soft to bold hues. They include Anthracite, Antique Brown, Mosborough Red, Old English Dark Red, Smooth Brown, and Smooth Grey.

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White stretched victorian conservatory with solid panel roof

Solid Roof Panels

You can use solid roof panels on a new house extension. They are also an option for an existing Anglian conservatory. You can choose a complete solid panel roof or a combination of solid and roof glazing panels.

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Modern or Traditional House Extensions

Buff brick contemporary gable end extension with white aluminium bi-fold doors and top hung casement windows

Traditional Home Extensions

A traditional home extension makes use of brick for that classic look, seamlessly blending with your home and its style. A traditional brick extension can include all sorts of window shapes and sizes, as well as doors that lead out to your garden, creating a space that links indoors and outdoors but stays usable throughout the year.

CosyRoom1

Modern Prefabricated Extensions

Transform your home with a more contemporary look with our CosyRoom prefab extensions. This style of house extension makes use of insulated, interlocking wall panels instead of bricks, providing great thermal efficiency and a more lightweight construction. This system can also make use of existing foundations, perfect when you want to replace a conservatory with an extension.

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Learn More about Edwardian Conservatories

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How much does a conservatory cost?

It's the question on everybody's minds – just how much is a conservatory going to cost? In this guide, we break down what can affect the cost and how Anglian make it more affordable.

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Things to look for in a conservatory supplier

With so many suppliers out there, it can be tricky knowing where to turn. We'll give you a few pointers on how to separate the cowboys from the real deal.

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Choosing your conservatory roof style

Whether you're replacing your existing conservatory roof or starting from scratch, we've got you covered with our range of thermally-efficient conservatory roofing options.

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Choosing your conservatory shape

Getting the right shape to your conservatory so that it matches your home is more important than you think - it'll make it more usable and can help add value to your home.

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House Extensions FAQs

Your questions on house extensions answered by us.

How big can an extension be without planning permission?

Currently, an extension on a terraced or semi-detached house can project up to six metres from your home. For a detached house, it’s up to eight metres. An extension should not take up more than half of your land or be taller than your current roof. Our surveyor will confirm if the project needs planning permission, but if it does, we will take care of it all for you.

How much does a home extension add to house value?

A home extension is one of the best ways to increase the value of your home. How much value it could add depends on size, position, and its use. A single-storey extension is a popular way to increase the size of a kitchen or add a reception room. It could add between 10% and 20% to the value of a property.

How much does an extension cost?

The cost of adding an extension to your home will depend on a few factors, including how large it is, the materials used, and any special details or features. Naturally, a larger extension using high-quality materials will generally cost more. With Anglian, we can provide a free, no-obligation quote based on your plans and your home.

How do you extend a kitchen?

Depending on your home and your kitchen position, there are many ways to extend. Victorian terraces often have a narrow galley kitchen at the back with a small courtyard next to it. Many people choose to extend their terraced kitchen by adding a side extension or a wraparound extension. To expand your kitchen in a 1930s semi-detached house, add a single-storey extension with large patio doors at the back.

Do I need an architect for a home extension?

You don't have to hire an architect to build a home extension, but if it’s a big project, it can help. Architects provide plans and guidance for homeowners and the builder you hire. Some building firms offer this too, but for more complex builds, it's a good idea to find an architect.

What is the difference between a single and a double storey extension?
A single storey home extension only extends part of the ground floor of a home, with a pitched or flat roof on top. A double storey extension also adds a floor above, creating a new space on the ground and first floor. This could be a dining room downstairs and a new bedroom above, for example.
What is the 50% rule for house extension?

The 50% rule refers to planning restrictions for home extensions. Most local councils in the UK use this rule to limit the size of extensions to less than 50% of the original area of a property. If this 50% margin is exceeded, planning permission must be sought.

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    Sets standards that ensure our products and services meet customers’ requirements.
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    For materials used and water resistance on all sealed units.
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    For impact resistance and glass fragmentation on safety glass.
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    The British Board of Agrement provides certification on the quality of our products.
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