6 Week Extensions

High-Quality Home Extensions Built in Just 6 Weeks

At 6 Week Extensions, we specialise in constructing premium extension shells in as little as six weeks. Working across Surrey and London, we combine efficient project management with exceptional craftsmanship to deliver a strong, weatherproof structure that's ready for the next stage of your build.

Whether you're adding a new kitchen, creating extra living space, or increasing the value of your property, our experienced team manages every stage of the structural build—from site preparation and foundations to brickwork, roofing, and shell completion. Every project is completed with precision, using quality materials and in full compliance with UK Building Regulations.

Our proven process keeps your project moving efficiently without compromising on quality, giving you confidence that your build will be completed on time and to the highest standards.

Why Choose 6 Week Extensions?

  • Guaranteed 6-week shell construction

  • Experienced builders serving Surrey & London

  • High-quality workmanship and premium materials

  • Complete project management from start to shell completion

  • Transparent quotations with clear timelines

  • Fully compliant with UK Building Regulations

  • Reliable, professional service with exceptional attention to detail

At 6 Week Extensions, we believe every successful project begins with a solid structure. By delivering expertly built extension shells on schedule, we provide the perfect foundation for homeowners and contractors to complete the interior and bring their vision to life.

Build smart. Build strong. Build in six weeks

Week One – Footings & Foundations
The first stage of your extension focuses on preparing the site and constructing the foundation footings. This critical phase creates a strong, stable base for the entire build, ensuring long-term structural integrity and full compliance with UK Building Regulations. By completing the groundwork with precision and care, we provide the solid foundations needed for the project to progress efficiently and safely.

6 Week Time Line.

Week Two – Brickwork.
With the foundations securely in place, the next stage focuses on building the external walls and bringing your extension to life. Our skilled team carefully constructs the brickwork using high-quality materials and precise techniques, ensuring a durable structure that complements the existing character of your property. Every detail is considered to achieve a seamless finish, strong performance, and a build that stands the test of time.

Week Three – Roof Structure & Watertight
During the third stage of the build, we install the roof structure and complete the roof covering, creating a secure and weatherproof extension. As part of this process, we also install high-quality roof insulation to improve energy efficiency and maintain a comfortable internal environment throughout the year.

By the end of this stage, your extension is fully watertight and protected from the elements, providing a safe and secure space ready for the next phase of construction.

Week Four – Floor Structure & First Fix Services
The fourth stage focuses on developing the internal structure of your extension. We complete the floor construction and install the essential first fix plumbing and electrical systems, including pipework, wiring, and key components that sit behind walls and beneath floors.

This crucial stage ensures your extension is fully prepared for the finishing works ahead, with all essential services professionally installed to support a functional, efficient, and high-quality living space.

Week Five – Plasterboard & Plastering
During the fifth stage of the build, your extension begins to take shape as a fully defined living space. We install plasterboard, complete wall and ceiling plastering, and create smooth, high-quality finishes ready for the final stages of decoration and interior detailing.

Attention to detail is at the heart of this process, ensuring a clean, refined finish that enhances the overall appearance of your new space and provides the perfect foundation for your chosen interior style.

Week Six – Snagging & Finishing Touches
In the final stage of the build, we complete a thorough inspection process and address any final details to ensure your extension meets our high standards of quality and workmanship. Every element is carefully reviewed, from structural finishes to overall presentation, ensuring the completed shell is delivered to the highest standard.

At the end of week six, your extension shell is fully complete, secure, and ready for the next stage of your project — providing a professionally built foundation for your interior finishing and design plans.

Now stage one is done why not talk to our interior Specialists 

Bringing Your Extension Interior to Life

Once the structure is complete, our dedicated Interior Team transforms your extension into a fully finished and functional living space. At Intego Services, we go beyond building the shell — we create beautifully designed interiors where your vision becomes a reality.

From first fix installations through to the final finishing touches, our experienced tradespeople manage every aspect of the internal build, including plumbing, electrical work, plastering, carpentry, and detailed finishing. Each stage is carefully coordinated and professionally completed to ensure a seamless transition from structural work to a high-quality living environment.

We take pride in delivering exceptional craftsmanship, clean finishes, and attention to detail throughout every project. Whether you’re creating a modern open-plan kitchen, a spacious family living area, or a practical home office, our Interior Team works efficiently to deliver a beautifully completed space that is designed around your lifestyle.