Planning a modular project? Fill out the form and we’ll help you choose the right solution for your needs.
Create the perfect independent living space with our premium modular one bedroom granny annexe. Designed for comfort and built for year-round UK weather, our annexes offer a fast, high-quality alternative to traditional builds. Expand your home seamlessly today.
Whether you’re planning ahead for ageing parents, creating independent space for adult children, or looking for a flexible garden home that adds genuine value to your property — a modular annexe delivers what a traditional extension rarely can: a fully self-contained, comfortable home with its own front door.
The Ultimate Independent Living Space
Adding a garden annexe to your property is the smartest way to keep loved ones close while maintaining everyone’s privacy. Whether you need a comfortable home for aging parents or a private guest suite, our modular solutions offer uncompromising quality. Every annexe building is crafted with premium materials, ensuring a warm, energy-efficient, and fully self-contained home right in your garden. Skip the stress of a messy house extension and enjoy a beautifully finished living space that adds immediate value to your property.
Why Modular Beats Traditional Builds
Traditional construction means months of mud, delays, and spiralling budgets. Our modular approach changes everything. Manufactured off-site in a controlled factory environment, your new home is built faster and to exacting standards. This drastically reduces on-site disruption and gives you total price certainty. When comparing options, you will find our one bedroom granny annexe cost is significantly more competitive than a traditional brick build, without sacrificing longevity, thermal performance, or stunning design.
Our one bedroom garden annexes are not basic summerhouses; they are permanent, building-control-compliant homes designed for decades of daily use. We offer extensive customisation so your new space perfectly matches your lifestyle, mobility requirements, and garden aesthetics.
Energy Efficient: Highly insulated walls, floors, and roofs—exceeding standard UK building regulations—keep energy bills low and the space comfortably warm in the winter.
Premium Glazing: A-rated double or triple-glazed windows and wide bi-fold doors flood the living area with natural light while locking the heat inside.
Robust Foundations: We utilize eco-friendly ground screw foundations. They are faster to install, require zero concrete, and actively protect the tree roots in your garden.
Spacious Living Area: An open-plan kitchen and lounge designed to maximize usable space and provide easy, trip-free accessibility.
Fitted Kitchens: Choose from a curated range of contemporary or classic cabinetry, fully fitted with integrated appliances and highly durable worktops.
Luxury Bathrooms: Fully fitted shower rooms featuring anti-slip flooring, modern sanitaryware, and customizable options for accessible grab rails or walk-in wet rooms.
Smart Heating: Electric underfloor heating or climate-control air conditioning systems ensure the perfect temperature at the touch of a button.
Bespoke Cladding: Select from sustainable Western Red Cedar, low-maintenance composite cladding, or traditional timber to perfectly complement your main property.
Roofing Styles: Choose between a sleek modern flat roof with durable EPDM rubber membranes or a traditional pitched roof, tailored to local planning requirements.
Everything is tailored to your exact specifications. From the placement of plug sockets to the color of the window frames, our turnkey service means your annexe arrives ready for immediate living.
Most UK buyers overestimate what needs planning permission.
Here’s what most don’t know — and what we’ve learned from helping over a thousand clients place units across Europe and the UK.
Tell us about your garden, your family situation and what you need from the space. We’ll help you find the right model, navigate the planning position and get a clear picture of cost and timescale — without obligation.
Only 60-Second Quote
→ Get a Personalized Offer in 60 seconds
Most UK buyers overestimate what needs planning permission.
Here’s what most don’t know — and what we’ve learned from helping over a thousand clients place units across Europe and the UK.
The 2026 UK Planning Guide for Modular Homes
Only 60-Second Quote
→ Get a Personalized Offer in 60 seconds
Process – How It Works?
01
A 30–45 minute call to understand your needs, budget, location, intended use, and timeline.
02
We help you choose the right model and review site access, ground conditions, utilities, and planning needs.
03
Once approved, we sign the contract, secure your production slot, and finalise the building specification.
04
Your building enters production, with quality checks at every stage to meet the agreed specification.
05
We arrange delivery, while the client prepares site access, foundations, and crane support for installation.
06
After installation, we hand over the project with documentation and remain available for ongoing support.
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One-Bedroom Granny Annexe
In most cases, yes. Because an annexe is used as primary, self-contained living accommodation, it usually requires planning permission or a Certificate of Lawful Development. However, our in-house team handles the entire planning application process and paperwork on your behalf.
The final one bedroom granny annexe cost depends on your chosen finishes, groundwork, and site access constraints. However, our modular buildings offer a highly competitive, fixed-price solution that is significantly more cost-effective and predictable than traditional brick-and-mortar extensions.
Because the structure is built off-site in our specialized UK factory, on-site installation is incredibly fast and clean. Most of our 1 bedroom annexes are fully installed, connected, and ready to move into within 1 to 3 weeks of arriving at your property.
Absolutely. Our annexes are built to stringent full UK residential building standards. With premium insulation layers, residential-grade double glazing, and modern heating systems, they are highly energy-efficient and comfortable 365 days a year.
Yes, we manage all utility connections. The annexe is connected directly to your main property’s existing water, electricity, and sewerage systems via professionally dug and certified underground trenches.
Our modular annexes are built to last a lifetime. Because we use treated structural timber, advanced weatherproofing membranes, and premium exterior cladding, the structural lifespan is 60+ years. They require no more maintenance than a traditional brick-and-mortar home.
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Tell us what you’re planning, and we’ll help you choose the right modular solution for your site, budget, and timeline.
