House Extensions in Christchurch

EXPAND YOUR HOME, ELEVATE YOUR LIVING

Bespoke House Extensions in Christchurch

Transform your Christchurch home with a tailored extension designed around the way you live. Whether you want an open-plan kitchen, a relaxing garden lounge, or a versatile family room, Richard Thomas will design, manage and build your project from start to finish. We are based locally in Christchurch and create extensions that suit the unique character of the area, from coastal homes near Mudeford, to period properties by the Priory, to modern homes across Purewell and Highcliffe.

GET A QUOTE

Designed For Your Christchurch Property

Every extension is made-to-measure and tailored to your home’s layout, architecture and preferred style – ensuring a seamless finish that feels naturally integrated.

Styles That Suit Every Home

Investing in a home extension not only provides you extra space but significantly boosts your property value. Explore various extension styles offered by Richard Thomas in Southampton to revolutionise your living space.

Planning & Regulations Covered

We take care of all Building Regulations and permissions, so your house extension is completed smoothly and compliantly with no stress for you.

Ultraroof Extension

Ultraroof provides a lightweight tiled solution that delivers exceptional strength and thermal performance. It creates a beautifully vaulted interior, enhancing height and space, while maintaining a traditional external aesthetic. Perfect for coastal and character-rich properties throughout Christchurch.

Livinroof Extension

With Livinroof, you’ll enjoy the benefits of both solid roofing and configurable glass insert placement. Bring natural light exactly where you want it while enjoying far superior insulation. A Livinroof extension gives you a stylish, modern look combined with comfortable, year-round usability.

Flat Roof Extension

For homeowners wanting sleek contemporary architecture, a flat roof extension is an ideal choice. With options for skylights or roof lanterns, this style is popular for kitchen extensions and open-plan designs within Christchurch’s residential areas – allowing you to make the most of modern styling without compromising thermal efficiency.

House Extensions
House Extensions
House Extensions

Seamlessly Integrated Into Your Home

We don’t believe in bolt-on builds. Your new Christchurch house extension will be designed to look and feel like it has always been part of your home. Finishes, glazing, roof choice, brickwork blending and internal detailing are all bespoke to your property.

House extensions in Christchurch

Natural Light Built Into The Design

Light is a major design driver in Christchurch homes especially where many properties enjoy coastal orientation or garden views. With Ultraframe’s glazing configurations, we position light sources to enhance visibility and ambience while maintaining privacy and energy efficiency.

House Extensions in Christchurch

Built for Year-Round Comfort

Using Ultraframe’s advanced roofing technology, your new extension will keep your home comfortable whatever the season. High insulation levels, precision-manufactured materials, and professional installation ensure thermal stability and low energy usage throughout the year.

House Extensions in Christchurch
Richard Thomas

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.

1 / 0

OUR VIDEOS

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.

House Extensions

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.

GET IN TOUCH

Fill Out Our Contact Form

* indicates required fields

We’d Love To Hear From You

GIVE US A CALL

SEND US AN ENQUIRY

ultrainstaller logo
which - trusted trader logo
check-trade logo
bba certified
google reviews
residence collection

© 2026 Richard Thomas Conservatories, Extensions & Windows

Email Us

Online Quote