Speed & Timeline
Our modular builds
Up to 70% faster with a 4–6 week lead time.
Traditional construction
Longer build times, prone to on-site delays.
Our dedicated teams work across the UK
We’ve cracked the code for high-quality, fully compliant structural steel annexes in the city. Our rooms are premium, built to last, and installed by our specialist teams across South West London, North London, and busy boroughs like Islington, Bromley, Barnet, and Haringey.
We give you a fixed, all-inclusive price and a seriously fast build time. Backed by a solid 10-year structural guarantee, it’s simply the smartest, most reliable way to expand your London property without the classic building site headache.
Think about a traditional build in London—that site’s going to take up half your garden, block access, and costs will drift like the price of parking in Zone 1. Our modular approach cuts that misery short. It's not just faster; it's a completely different way of building designed specifically for urban constraints.
We manufacture every structural steel-frame annexe at our purpose-built facility outside the city. And that’s a huge win for you in London. It means we build the complex structure—where quality control matters most—in a perfect environment. Then, we transport the finished sections and expertly assemble them on your plot. Less time on your property means less disruption to your street, your neighbours, and your life. It’s precision engineering that makes sense for urban living.
The beauty of our fixed pricing is that you only get one number. That number covers absolutely everything required for a fully habitable, move-in ready space, all built to the toughest UK Building Control standards.
Think of it as a complete turn-key solution.
Your fixed price includes:
Discover the ideal balance of compact design and comfortable living with our 1-bedroom granny annexe. Measuring a typical 6m x 4m, this layout smartly maximises your living space without sacrificing your garden.
Define your style with a wide array of contemporary external finishes, complemented by elegant, slim-profile aluminium windows that come as standard.
From the internal layout to the complete kitchen, bedroom, and bathroom fit-out, every aspect of your annexe is fully customisable and designed to your precise requirements.
We can build any Granny Annexe size, shape or configuration with any number of rooms.
Annexe Price inclusive of VAT, foundations, external walls & cladding, flat roof, painted walls & ceilings, internal partitions, plumbing, heating, electrics & lighting, flooring, 3m wide Aluminium doors / windows, bathroom and kitchen installation.
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This 2 Bedroom Annexe has typical dimensions from 8m x 5m maximising your available space without compromising on usability and loss of garden space. The wide range of external finishes that are available mean you can create your own aesthetic to suit your surroundings, all of which exude clean, stylish lines and modern flair to the extra space and enhance your outside space.
Our standard Annexe model incorporates an extensive elegant slim-profile Aluminium glazing and full height openable windows.
All elements of the Granny Annexe build are fully customisable. All internal fit-out installations including bedroom, kitchen and bathroom installations are designed to the clients exact specifications.
We can build any Granny Annexe size, shape or configuration with any number of rooms.
Annexe Price inclusive of VAT, foundations, external walls & cladding, flat roof, painted walls & ceilings, internal partitions, plumbing, heating, electrics & lighting, flooring, 4m wide Aluminium doors / windows, bathroom and kitchen installation.
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Our spacious 3-bedroom granny annexe provides a complete family home within your garden. With typical dimensions from 10m x 5m, the layout is expertly planned to deliver generous living quarters while preserving your valuable outdoor space.
You can create a look that perfectly complements your property by choosing from a wide range of external finishes, all offering clean lines and a modern aesthetic. Elegant, slim-profile aluminium glazing and full-height windows are included as standard, creating a bright and airy atmosphere.
Every element is fully customisable, with the kitchen, bathrooms, and bedrooms all designed and installed to your exact specifications.
We can build any Annexe size, shape or configuration with any number of rooms.
Annexe Price inclusive of VAT, foundations, external walls & cladding, flat roof, painted walls & ceilings, internal partitions, plumbing, heating, electrics & lighting, flooring, 5m wide Aluminium doors / windows, bathroom and kitchen installation.
The Vita Modular Luxury Bespoke Garden Annexe redefines bespoke living with a seamless fusion of contemporary design, handcrafted detail, and timeless comfort.
Each annexe is individually designed to reflect your lifestyle—never pre-set or volume-produced—offering a truly personal space that can serve as a guest retreat, independent living suite, creative studio, or tranquil sanctuary.
Built with precision engineering, sustainable materials, and exceptional energy efficiency, every Vita annexe delivers year-round comfort and effortless elegance. From premium finishes and intelligent layouts to smart home integrations, every element is tailored to your exact vision.
More than simply an Annexe, it’s a statement of design, craftsmanship, and individuality—crafted to enhance your living space and stand beautifully for generations.
Whether your garden is a postage stamp in Clapham or a roomy plot in Enfield, we’ve got this handled.
Here’s our simple, efficient 5-Step process:
Let’s Talk: Call us for an informal chat about your needs. We'll start surveying your London property remotely to spot any early constraints.
The Proposal: You'll get that transparent, fixed-price quote and, more importantly, a guaranteed installation date. No vague promises.
Planning Submission: We manage the full planning application with your specific London Borough Council. You just sit back and wait for the green light.
The Build: We construct your custom steel-frame annexe at our dedicated facility, ensuring perfect quality control every step of the way.
Installation & Handover: Our team assembles and commissions the annexe. It’s done in weeks. We hand you the key, and you're ready to move in.
Stop letting the London hassle block your progress. Get in touch today and let's start the only part that matters: building your space.
Fill out our enquiry form today
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| Dimensions (External) | 5.0m | 6.0m | 7.0m | 8.0m | 9.0m | 10.0m |
|---|---|---|---|---|---|---|
| 5.0m | £75,500 | £87,000 | £105,500 | £120,000 | £128,500 | £118,000 |
| 5.5m | £83,750 | £98,900 | £117,050 | £133,350 | £129,200 | £151,500 |
| 6.0m | £87,000 | £101,800 | £118,600 | £134,400 | £135,200 | £165,000 |
| 6.5m | £97,250 | £108,700 | £120,150 | £138,600 | £156,050 | £175,500 |
| 7.0m | £102,500 | £118,600 | £131,700 | £144,800 | £171,900 | £184,000 |
The above prices are inclusive of inclusive of 0% VAT, foundations, structural steel frame, external walls, silicon render or cladding, flat roof, painted walls & ceilings, electrics & lighting, flooring, up to 3m wide Aluminium doors / windows and installation of bathroom and kitchen (client to supply all 2nd fix items).
Exclusions: Demolitions, ground preperation, mains services connections, drainage works, professional fees, statutory approvals - all can be quoted for as required.
Our structural steel frame modular extensions are the perfect solution for all those seeking an exceptional quality, efficiently installed single story extension at an affordable, fixed inclusive price with an industry leading 10 year guarantee from the professional, reputable and reliable team of construction professionals here at Vita Modular.
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At Vita Modular, our team of trustworthy construction professionals offers a range of modern garden rooms made with a modular structural steel frame. These garden rooms are designed to provide supreme quality and can be efficiently installed. We understand the importance of affordability, so our prices are fixed and affordable for all. Additionally, we offer an industry-leading 10 year warranty for your peace of mind.
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At Vita Modular we take great pride in our work and find it incredibly rewarding hearing from our clients once they have had time to use and enjoy the new space we built for them. Below are just a few case studies, some with full video testimonials, of our recently completed projects - keep checking back as we're adding new case studies on a regular basis...
Complete our customer enquiry form so we can fully understand your Annexe requirements, and one of our dedicated team members will contact you to arrange a design consultation.
We will send over a proposal that includes our terms and conditions, technical drawings, agreed payment plan details, and offer you a fixed installation date commitment for your Annexe.
One of our friendly project managers will take a few measurements at a pre-arranged site survey and make all considerations to ensure the installation process will go as smoothly as possible.
Our team will begin the manufacturing process at our Warwickshire production facility to hand-craft your modular Annexe and book in our installation team for the agreed installation date.
We will contact you around a week before the agreed installation date to confirm any final arrangements that need to be made. Our install team will arrive on the morning of your install date.
Please kindly note that our minimum order value for a typical 3m x 3m (9 SQ/M) size modular extension is £30,000 inclusive.
We would love to hear about your modular building requirements and create a space you will be proud of. Please complete our enquiry form below where one of our team will contact you usually within 24 hours of your enquiry.
Please contact us to arrange a visit to our showroom or nearest completed project to you
Homeowners guide to Building Regulations
Building control fees are not included in our prices and will be itemised separately in your Estimate. We will manage the whole building control process for you.
