Replica tile extension banner

Single-Storey House Extensions

If your home is getting too small, adding a single-storey house extension is a great option. Whether it's a kitchen-diner, bedroom, bathroom or study, we have different types of house extensions and roof options to choose from.

You can select from uPVC, wood, or aluminium windows and doors in different colours and styles. Our quote includes planning permission, a complete technical survey, and all the building work. So there's no more worrying about finding builders or dealing with unexpected costs.

Get a Price
  • 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

The time it takes to finish a home extension depends on the design and materials you choose. For a regular one-story extension, it can take three to four months. If you need planning permission, it may take longer. Our design team will discuss the estimated time with you before starting.

Types of House Extension

Our 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 utility room to your home. Make your room 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 dimension. Our design team can help you create the perfect new room for your home.

House Extension Roof Types

Replica tile harmony extension with French doors

Replica Tiles

You can choose a replica tiled roof extension for your new extension or as an upgrade for your existing Anglian conservatory. It is cost-effective, retains heat well, and is lightweight. Because it is lightweight, it does not need a lot of structural support.

Dual dark woodgrain French doors on traditional tile extension

Real Tiles

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

Anthracite grey solid panel roof extension with tilt and turn windows

Solid Roof Panels

You can use solid roof panels on a new 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.

Extension Ideas

  • kitchen extension interior

    Kitchen Extension

    Make your dream of an open-plan kitchen-diner come true by creating a welcoming kitchen extension for everyone to enjoy. Our team help you design a space to suit you. So you can cook, entertain and relax in style and comfort.

  • Georgian style uPVC casement bedroom window in White design inspiration from Anglian Home Improvements

    Bedroom Extension

    Boost the value of your property by up to 12% by adding a bedroom extension. A new bedroom at the side or rear of the house is a great way to make your home continue to work for you as your family grows.

  • Wooden casement window in white with frosted glass and lead bars from the Anglian windows range

    Bathroom Extension

    Busy families who need an accessible bathroom on the ground floor should consider adding a bathroom extension. This will make for easier mornings shorter lines for the shower.

Why Choose Us for your New Home Extension?

  1. Planning Permission? Sorted

    Planning permission isn’t required for most single-storey house extensions or conservatories. But the regulations vary depending on the build. Use our checklist to determine if you need it. If your extension does need planning permission then don’t worry, we take care of the paperwork. It’s all included in your quote.

  2. Free Design Consultation

    Choosing the windows, doors and roof for your extension can feel like a big job. That's why we're there to help every step of the way. Our design consultant visits your home to discuss your plans and best use of your new extension.

  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.

Regency extension with replica tile roof and dual golden brown bifold doors

Is a House Extension or Conservatory Right for Your Home?

Adding space onto your home can be an exciting decision, but it isn’t always a simple one. Our guide can help you decide between a conservatory, orangery, or extension. Here are some of the main things to consider to get started.

Replica tile extension Edwardian conservatory with dual anthracite grey French doors and windows

House Extension

  • Increase the space in your home without the hassle of moving.
  • More versatile and comfortable all year round than a conservatory.
  • Add value to your property with more rooms or make others bigger.

White uPVC Elizabethan conservatory with glass solaroof


  • Conservatories make a light and airy extra reception room.
  • Creates a connection between your home and garden.
  • Design and customisation is unique to your home.

Dual anthracite grey harmony pelmet orange with aluminium bi-fold doors


  • Orangeries create a space that you can use all year.
  • The roof design makes a room bright and airy.
  • Usually requires no planning permission.

Get a Price

Why Anglian?

Replica tile extension conservatory with patio doors interior

Flexible finance

You can pay for your new extension over time with our affordable finance plan. The plan starts from a £999 deposit and has a variable APR of 12.9%.

Made in Britain

The Made in Britain symbol means top quality. We make our extensions right here in the UK from some of the best materials available.

Anglian installer stock image

All-in-One Service

Our extension price includes a complete technical survey, planning permission, manufacture and installation.

Your Questions Answered by us

How big can an extension be without planning permission?

As of 2019, an extension on a detached house can project up to eight metres from your home. For a semi-detached or detached house, it’s up to six metres. When building an extension, it 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 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 can add 5-8% to the value of your home.

How long does a house extension take?

The time it takes to finish a home extension depends on the design and materials you choose. For a regular one-story extension, it can take three to four months. If you need planning permission, it may take longer. Our design team will discuss the estimated time with you before starting.

How do you extend a kitchen?

Depending on your home and the position of your kitchen there are lots of 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 this 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.

Made in Britain
10-year guarantee
UK's Number 1
Home Improvement Provider
Want to Speak To An Advisor?
Give our team a call on 0800 014 2106

Get a Price

Up to £250 off when you get a
free no-obligation quote.

Please enter your first name
Please enter your last name

To provide you with an accurate quote, we'll call you to arrange a remote or home visit.

Enter a valid phone number

We'll email you if we can't get in touch by phone.

Enter a valid email address
Enter your house number or name

We’ll use this information to store and process your enquiry

Enter a valid postcode
By providing your details you agree to being contacted under the terms of our privacy policy.

Our Accreditations and Licenses

  • Logo for the British Standards Institute ISO 9001 quality management systems certification
    Sets standards that ensure our products and services meet customers’ requirements.
  • BSEN 1279 Accreditation
    For materials used and water resistance on all sealed units.
  • BSEN 12150 toughened safety glass Kitemark accreditation
    For impact resistance and glass fragmentation on safety glass.
  • BSEN12608 Windows and Doors accreditation
  • British Board of Agrement conservatory accreditation
    The British Board of Agrement provides certification on the quality of our products.
  • The Glazing Arbitration Scheme Logo Anglian Home UK
    Independent service that deals with disputes between registered businesses and consumers.
  • Made in Britain logo
    Certifies products made from start to finish in a British factory by British craftspeople.
  • TrustMark is a government endorsed not-for-profit organisation that operates through more than 30 scheme operators.
  • The Conservatory Association logo
  • Recovinyl Plus logo
    PVC Industry initiative to improve manufacturing, minimise emissions and develop recycling practices
  • provides free, independent advice on all your glazing needs.