3D Rear Extension Configurator
Rear Extension Cost Estimator
Visualize and price your rear extension in real-time. Adjust dimensions, choose finishes, and see instant cost updates.
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LINX 3D Configurator
Rear Extension
London from
£60,000
Indicative Total
Excl. VAT · London pricing
£60,000
Fixed quote after free site visit · No hidden extras
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Ready to Start Your Rear Extension Project?
Get a free, no-obligation quote today. Our experts are ready to transform your rear extension with a beautiful extension.
Fast & Free Rear Extension Estimates
We'll Be In Touch Shortly To Discuss Your Requirements And Prepare Your Brief.
Our Services
Custom Rear Extensions
Designed Around You
Whether you're looking to add a spacious bedroom, a home office, a bathroom, or a multi-purpose living space, our expert team designs and builds rear extensions to suit your needs perfectly. From initial planning and architectural design to construction and finishing touches, we provide a seamless service that ensures your project runs smoothly from start to finish.
It all starts with a free quotation. We will quickly fix a date, visit your location, measure your property and share your estimations within a day.
Creative Rear Extensions
Innovative design solutions
Bedrooms Extensions
Master bedroom with en-suite
Living Space Conversions
Spacious living areas
How it works
How the configurator works
Start from the London base price for a rear extension, then work down the options: the external finish, the roof type and its roof lights, roof tiles on a pitched roof, the door style and the window frames. The 3D model changes as you choose.
Each upgrade adds its own price, and the indicative total — excluding VAT, at London pricing — updates as you go. When it looks right, tell us about your project in the form below and we will come back to you.
Built by LINX
Rear extensions by LINX
No. It is an indicative total to help you plan, excluding VAT and at London pricing. Your fixed-price quote follows a free site visit.
Not always — many single-storey rear extensions fall within permitted development. Our permitted development checker tells you whether that route is likely at your address.
Yes. The enquiry form takes your existing drawings or another quote, so we can price exactly what you have in mind.
Customer Reviews
Read what our customers say about our services
★★★★★
Our new loft conversion has us utterly thrilled! Our underused attic was turned by the Linx team into a lovely, light-filled, and cosy area that is ideal for living, working, and unwinding. The workmanship, craftsmanship, and attention to detail were superb. Everything fits in well with the rest of our house. Excellent outcomes and service. Strongly suggested!
Jordan R. · Reviews.io ·
★★★★★
Our expectations were surpassed by LINX Design's outstanding office and warehouse development. The crew showed exceptional professionalism, technical know-how, and attention to detail from the first free site evaluation to the last handover. We had total confidence from the start thanks to the fixed-price quote, and the job was handled effectively all along the way. Their seamless integration of design, fabrication, and installation services produced a contemporary, useful, and aesthetically pleasing workstation. Every element of the construction demonstrates the high calibre of workmanship, and the warranty added even more assurance. We are thrilled with the completed building and would heartily suggest LINX Design for any commercial or industrial building project.
Alexander O. · Reviews.io ·
★★★★★
The phase of architectural design and drawings was overseen with remarkable skill and meticulousness. After conducting a thorough property survey, excellent architectural drawings and suggested layouts were created. The team meticulously took into account every comment, producing design changes quickly and guaranteeing a smooth approval process all along the way. Thanks, Linx Owner Gary Pal and your all Guys!!!
Michael B. · Reviews.io ·
★★★★★
LINX Design and Build completed our loft conversion to an exceptional standard and delivered everything on schedule. The team provided clear daily updates, maintained a clean and safe worksite, and demonstrated outstanding craftsmanship throughout the project. Our dedicated project manager ensured a smooth, stress-free experience. We highly recommend their renovation services.
Robert P. · Reviews.io ·
★★★★★
Outstanding service from LINX Design and Build. From the initial consultation to the final handover, the team was professional, knowledgeable, and hardworking. Their commitment to quality, innovation, and customer satisfaction was evident throughout the project. Every aspect of the build was completed with care and precision, resulting in a finished home that exceeded our expectations. We highly recommend LINX Design and Build for anyone looking for a trustworthy and experienced building company.
Joseph P. · Reviews.io ·
★★★★★
We are extremely happy with our kitchen infill extension and renovation. The team was professional, friendly, and reliable throughout. Their workmanship and attention to detail were excellent, transforming our space beautifully. Highly recommended for quality, service, and outstanding results!
James K. · Reviews.io ·
Get Started Today
Have A Rear Extension Project In Mind?
Get your free, no-obligation quote today. Our experts are ready to transform your rear extension with a beautiful extension.