EXPANDING YOUR HOME, ENHANCING YOUR LIFESTYLE

Bespoke House Extensions Across Hampshire & Dorset

Create a brighter, more spacious home with a high-performance extension from Richard Thomas. Whether you’re dreaming of an open-plan kitchen, a cosy lounge, or a multi-functional family space, we’ll help you bring it to life – fully designed, project-managed, and built around you. We cover homes throughout Christchurch, Bournemouth, Dorset and Hampshire.

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Tailor-Made Extensions

Every extension is made to measure and designed to complement your home perfectly – from the roofline to the brickwork, and everything in between.

Styles That Fit Your Home

Choose from a range of modern or traditional designs, each with configurable layouts, glazing, and roof systems to match your space and needs.

Regulations Handled for You

We take care of Building Regulations and planning permission, giving you peace of mind at every stage of the project.

Ultraroof Extension

Ultraroof is the lightest and strongest tiled roof on the market. Its warm tiled finish adds kerb appeal outside, while inside, you’ll enjoy a vaulted ceiling that opens up the space beautifully.

 

Ideal for those seeking a traditional aesthetic with modern performance, an Ultraroof extension blends beautifully with your home and creates a fully insulated living space perfect for year-round use.

Livinroof Extension

Enjoy the best of both worlds with Livinroof – a hybrid solid roof system that lets you place glass panels exactly where you want natural light.

 

The internal ceiling is fully plastered for a cosy, ‘real room’ feel, while the external finish lends a modern ‘wow’ factor to any home. Livinroof is also highly insulating, keeping your extension cool in summer and warm in winter.

Flat Roof Extension

Create a crisp, contemporary space with a flat roof extension. Designed with high insulation values and stylish aluminium detailing, it can include large roof lanterns or flat skylights to draw in natural light.

 

A popular choice for single-storey wraparounds, kitchen-diners, or a stunning new living space, our flat roof extensions are a popular option throughout Dorset and Hampshire.

Seamless Integration With Your Home

We don’t believe in one-size-fits-all. Whether you choose Livinroof, Ultraroof or a flat roof solution, your extension will be made to measure to suit your property and lifestyle. Finishes, glazing, brickwork and layout can all be tailored for a natural, seamless integration with your home.

Based in Christchurch, we install home extensions across Bournemouth, Dorset and Hampshire – creating beautiful spaces that feel like they’ve always been part of your home.

Designed With Light in Mind

Natural light transforms a space – and with Ultraframe’s configurable glazing, you can bring it in exactly where you want it. Add full-length windows, shaped roof glazing, rooflights or lanterns to flood your extension with daylight.

We’ll help you make the most of every angle with a bespoke design that maximises light, views and connection to your garden – all while maintaining energy efficiency and privacy.

Precision-Built for Year-Round Comfort

Our Ultraframe roofing systems are designed to deliver outstanding thermal insulation, keeping your extension warm in winter and cool in summer. High-performance materials and intelligent ventilation options mean you’ll enjoy a comfortable space whatever the weather.

Every installation is carried out by our expert team, ensuring a smooth process from start to finish. We’ll manage every detail – including Building Regulations – so you can focus on planning how you’ll use your new room.

WITH SERVICE SECOND TO NONE

Richard Thomas Is a Trusted, Family-Run Business With Nearly 20 Years of Experience

OUR PRODUCT SELECTION

Take a Look at Some Related Products

Looking for more ways to enhance your home? Explore our range of conservatories, orangeries and replacement roofs – all expertly designed and installed by the Richard Thomas team.

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Learn More About Richard Thomas by Watching Our Videos

Discover what makes Richard Thomas the trusted choice for homes across Christchurch, Bournemouth, Dorset and Hampshire.

EXTENSION FAQs

Frequently Asked Questions

Got questions about building an extension? Browse our FAQs below to learn more about how an extension can improve your home.

Do I need permission to extend my house?

If your extension is at the front of your house, next to a road, or near a boundary, you’ll need to get planning permission. You’ll also need planning permission if more than half the land around the ‘original house’ will be covered by the extension or if the materials being used are different to the ‘original house’.

However, there are plenty of ways that you can extend your home without planning permission, should it fall within your permitted development rights. If you’re looking for inspiration, get in touch with our expert team and we’ll be happy to discuss your options with you.

What Building Regulations will apply to a house extension?

Whether your extension needs planning permission or not, you must get approval from Building Regulations. These regulations set out a minimum requirement for the following:

• Structural integrity
• Fire safety
• Energy efficiency
• Damp proofing
• Ventilation
• Other parts to keep the extension safe

When designing and building your extension, our team will ensure that everything meets Building Regulations standards for a smooth approval process.

How big should my extension be?

The team at Richard Thomas creates bespoke extensions, so we can tailor your extension’s dimensions to your needs while ensuring it complements your existing property. Our expertise can help create an extension that balances functionality, aesthetics, and budget constraints.

How can I make my extension energy efficient?

There are several ways that you can make your extensions energy efficient, all of which will be discussed in the planning and designing phase.

One of the most important aspects of an extension, in terms of energy efficiency, is the materials being used. It is important to insulate the extension while also ventilating the space as needed to avoid condensation and damp.

Perhaps the biggest decision when factoring in energy efficiency is the type of roof installed on your extension. All of our Ultraframe roof systems are highly energy efficient, but some are capable of achieving slightly lower U-values for efficiency than others.

It is also important to note that an energy efficient extension will only be as good as the rest of the house.

How much do I need to plan before the building starts?

You need to consider some planning points ahead of construction, in line with the intended use of the extension. For example, if you are going to use the extension as a kitchen, you will need to have decided the position of the units, cooker, and white goods prior to any building. This will enable plumbing, electrics, and ventilation to be scheduled into the work.

What factors determine the cost of an extension?

Several factors contribute to the overall cost of an extension project:

Size and Complexity: The size and complexity of the extension will significantly influence the cost. Larger or more intricate designs may require more materials and labour, impacting the overall expenses.

Materials Used: The choice of materials, from basic to high-end options, affects the cost. Premium materials generally come with a higher price tag but might offer better durability and aesthetics.

Design: Various designs or unique architectural features often increase costs due to the specialised work and materials required.

Location and Accessibility: The location of your property and accessibility for construction vehicles and equipment can impact costs. Challenging sites might require additional work or resources, affecting the overall budget.

Foundation and Site Preparation: The condition of the land and the type of foundation needed can influence costs. Extensive site preparation or special foundation requirements may add to the expenses.

Utilities and Services: Installing or relocating utilities, such as electricity, water, and gas connections, may add to the overall project expenses.

Do you handle all aspects of the extension project, including permits and regulations?

We offer a complete design and installation service for your extension, working with you to develop your dream space. Throughout the design and construction phases, we’ll ensure that the work complies with all Building Regulations.

We aren’t able to directly apply for planning permission (if necessary) on your behalf, but our knowledgeable team will be able to work with you through the process, providing guidance when needed.

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