★★★★★
Every single person I've had contact with at GMC has been incredible. We have had a bedroom and en-suite wet room installed recently and can't praise everyone involved enough.
Review 1 of 6
Modular Construction. Redefined.
BuildingMadeSimple.
Leading the way in modern modular construction, delivering high-quality spaces with less disruption and greater certainty.
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Watch our story
3 min overview
Precision-led deliveryFaster programmesMinimal disruption
Our Projects
Explore GMC's private housing, social housing, and garden room projects through a cleaner, more considered modular approach.
View All ProjectsOne process. One team.
GMC brings design, construction, delivery and installation together through one cleaner modular process.
Modern Construction
See How We Build
GMC is redefining the building process through smarter design, controlled factory construction, and streamlined on-site installation.
By building in controlled conditions and installing with precision, we create a cleaner, faster, and more reliable alternative to traditional construction.
Factory Precision
Built in controlled conditions for consistency, quality, and reliability.
Faster Delivery
Shorter programmes and smoother installation with less disruption.
Less Disruption
A cleaner, calmer experience on site with minimal impact on daily life.
Completed Projects
GMC Projects Across the UK
From South Wales to the South West and beyond, our completed projects showcase the reach and quality of GMC's bespoke modular construction solutions.
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Completed Projects
Across Wales, England and beyond.
Completed Project Locations
Bespoke Design
Tailored to you
Modular Precision
Built off-site
Delivered With Care
Across the UK
Installed To Perfection
By our expert team
Completed For You
Built to last
Why Clients Choose GMC
Built for a better building experience.
From cleaner installations to tighter factory control, GMC offers a more assured route to additional space, with less disruption and a far more considered result.
10-Year GuaranteeMade in Britain
Factory-Built Precision
Built in controlled conditions for stronger consistency and finish quality.
Minimal Disruption
Cleaner installation with less mess, noise, and disruption around the home.
Turnkey Service
From planning and drawings to build and installation, GMC manages the full process.
Ready To Use
Delivered fully finished, connected, and ready to be completed and enjoyed.
Design It Yourself
Live 3D
Size it, glaze it, choose every finish and divide the rooms — our 3D configurator builds your extension in front of you, with the price updating as you go.
Open the 3D ConfiguratorFree · No sign-up · Instant estimate
Drag to rotate
See every angle
Live pricing
Updates as you design
Every finish
Brick, render, cladding
Client Reviews
What Our Clients Think
Real feedback from families who trusted GMC to create additional space with less disruption and a better finished result.
Follow Our Journey
See the latest installs, factory progress, finished spaces, and behind-the-scenes moments from GMC Solutions.
Another job well done this summer. The customers were very happy and the pod looked amazing. The whole job went very smoothly and the finish was exceptional. We love the clients choice of bathroom tiles and the herringbone LVT flooring. If you want to build your bespoke modular extension today contact us on the details below 📞 07931819382 📧 office@greenmodularconstruction.co.uk 🖥️ www.greenmodularconstruction.co.uk #modularconstruction #greenbuilding #houseextensions #modernmethodsofconstruction #modular offsiteconstruction
We are SUPER proud of this one. A recent install completed in Penarth — creating a stunning open-plan space designed to completely transform family living. With large bifold doors flooding the room with natural light, this one is all about that bright, airy, luxury feel ✨ Built off-site, installed with minimal disruption, and ready to enjoy. We had all sorts of battles to face on this one; weather, drying times, Christmas deadlines, road closures- it was certainly an experience. However we are so happy with how it turned out. Thinking about upgrading your home space this summer? 📩 office@greenmodularconstruction.co.uk 📱 07931819382 #construction #modular #modularextension #home #penarth
Some highlights of our latest job in London. This project in Kensington had a lot of challenges to face - bad ground, awkward drainage running through our foundations, party wall issues, road closure and crane lift issues. You name it - this had it all. But we persevered and the end product was spot on as always. Simple, efficient, and finished to a high standard — exactly how it should be. Swipe to see how it came together. For enquiries: 📩 Office@greenmodularconstruction.co.uk #London #ModularExtension #HomeExtension #ConstructionUK
From factory to finished space. Every detail in this one was designed to be clean, practical, and ready to use straight away — no ongoing work, no hassle. This is what a modular install looks like at completion. If you’ve got a space in mind, we can build it. 📩 Office@greenmodularconstruction.co.uk #ModularExtension #HomeImprovement #GardenRoom #GreenModularConstruction