Transform your living space
Building Extensions in Cambridge
Get more space and enhance your lifestyle with extensions in Cambridge. We have a team of experts who can help you with functional and affordable extensions.
3 Five Star Reviews on GoogleExtensions Cambridge
Thinking of expanding your home?
For stress-free and functional extensions in Cambridge, get in touch with Carl Dunn Building & Roofing Ltd, our team of trusted builders in Cambridge. We offer a range of extension services to help you get more space suited to your evolving lifestyle needs.
Smart extensions for modern living
With our effortlessly functional home extensions, you can make your house useful and comfortable for growing families. Do you need a large kitchen?
Are you looking for an extra bedroom? Do you need a separate multi-functional room? Share your exact requirements with us, and we will design the rooms and space accordingly.
Extensions designed to fit your home and your life.


Types of extensions
Types of extensions we offer
Different homes undertake different approaches for extensions. At Carl Dunn Building & Roofing Ltd, we offer a range of affordable extensions you can arrange at any time.
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Single-storey extension
We create airy spaces ideal for modern lifestyles. Get perfect single-storey extensions and add more space to the kitchens and living areas.
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Double-storey extension
Find more space across multiple levels of your property with double-storey extensions. You can now get additional rooms without compromising the outdoor area.
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Rear and side extension
Our rear and side extensions are designed to maximise the unused space in the property. We also offer flat roof extensions in Cambridge as part of our side extension builds.
Improve your property value with well-designed extensions
We use high-quality materials and adhere to thoughtful design to create a space that is not only practical but also visually appealing.
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Designed to complement
We make extensions that complement your property. Want large windows, bi-fold doors or roof lights and lanterns? We can include them in your customised extension.
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Functional for a growing family
Build the extension today and accommodate your family tomorrow. We plan the space and layout so that your extension lasts for a lifetime, with adaptable spaces that evolve.
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Comfortable year-round
We use energy-efficient materials to ensure the extensions remain comfortable year-round.
Smooth and structured extension process
A well-managed extension should meet local regulations. At Carl Dunn Building & Roofing Ltd, our team visualises the layout before the work begins. From concept to project completion, we handle all the aspects of extension with care.
To get quotes, get in touch, or see more finished extensions in our gallery.

FAQs
Frequently Asked Questions
Do I need planning permission for home extensions in Cambridge?
Some extensions require permission, while others don't. It depends on size, layout and local regulations.
How long does a home extension project take?
The complete project might take 16 to 20 weeks to complete. However, project size, layout complexity, and weather conditions can affect completion.
Do I need experienced builders in Cambridge for a house extension?
Yes. A successful house extension requires experienced builders who can manage foundations, structural work, roofing, brickwork and interior finishing. Our team of builders in Cambridge provides complete building services for extension projects of all sizes.
Ready for more space?
Tell us what you need from your extension and we will arrange a visit and a free quote.



