House Extensions
Bespoke House Extensions - Cambridge & Cambridgeshire Region
Stefan’s Building offers professional house extension services throughout Cambridgeshire. As proud members of both the FMB and TrustMark, we guarantee your extension meets the highest industry standards from start to finish.
Using premium materials and proven construction methods, we ensure that your extension is not only visually impressive but also built for long-term durability.
As a customer-first organisation, your satisfaction drives everything we do. So, we aim to go above and beyond expectations with every project, no matter the size or scope. From the initial planning phase to the final sign-off, we’ll manage every stage of your house extension with confidence and care.
We specialise in a wide range of home extension types, including:
- Single and Double-Storey Extensions
- Kitchen Extensions
- Side and Rear Extensions
- Bathroom Extensions
- Wrap-Around Extensions
Whatever your requirements, we know that no two homes are the same. Which is why we offer a truly bespoke service for each client we work with. Each option can be tailored to your individual needs, property layout, and financial plan. And we take the time to understand your vision, offer practical suggestions, and guide you confidently through every phase of your extension project.
Get in touch with us using the details below to learn more about our expert house extension services. We are looking forward to extending your home soon.


Fully Custom House Extensions - Get More Out of Your Home
At Stefan’s Building, we specialise in delivering high-quality, spacious house extensions that:
- Enhance your home’s value.
- Improve usability,
- or enrich overall living experience.
Designed with both function and style, our Cambridge house extensions are built to the highest standards. Aiming to suit your unique needs and property layout.
Managing every stage of the build, we offer complete project management. This includes:
- Planning Support
- Brickwork and Blockwork
- Groundworks and Foundations
- Structural Alterations
- Doors and Windows
- Roof Construction
- Gas and Electrical Installations
- Professional Plastering
- Plumbing Services
- Flooring Installation
- Wall and Floor Tiling
- Joinery and Carpentry
- Final Inspection and Sign-Off
Each phase is carefully planned and executed by our experts. Ensuring the highest standards are met throughout. Using premium materials and proven techniques on all our house extension projects guarantees we deliver on our promise to you – outstanding results without delays or unexpected costs.
Our goal is to complete every build on time and within budget, without ever compromising on quality or detail. Contact us using the details below for more information.
All Our Building Services
Our house extensions in Cambridge are a great opportunity to get the extra space you need out of your home. Managed and completed by our experienced builders, your home is in safe hands with Stefan’s Building.
In addition to house extensions, we take pride in delivering a variety of building services across Cambridgeshire. Some of these include:
- Garage Conversions
- House Renovations
- Kitchen Supply and Installation
- New Homes
- Architectural and Structural Design Services
and more! So, whatever it is you need from our expert team, we are more than happy to help.
Get in touch with us to hear more about our house extensions and other building services. We are looking forward to hearing what you have in mind and getting to work soon.

Contact Us
Stefan’s Building Ltd are your premier building company serving Cambridge and the surrounding Cambridgeshire region. Our expert services include house extensions, garage conversions, house renovations, kitchen suppliers, new home builders, architectural & structural design services, and more.
Contact us today to learn more about our high-quality building services. Get in touch with our experienced team using the details below and we will get to work on your property soon. We are looking forward to hearing from you.

