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Why Choose an Annexe?
Independent Living, Together
Multi-generational living is about more than just proximity—it’s about balance. Our annexes offer the perfect middle ground: complete independence for your loved ones with the safety and security of having family just a few steps away.
- For Parents & Grandparents: Stay close to grandchildren while maintaining a private, high-spec sanctuary.
- For Young Adults: Provide a launchpad for the next generation in a market where traditional housing is out of reach.
- For Future Peace of Mind: Create a space that adapts to your family’s needs, ensuring support is always available whenever it's needed.
A Smart Investment for Your Home & Family
An annexe isn't just a building; it’s a strategic financial asset.
- Significant Cost Savings: With average UK care home fees at £1,100 per week, a self-contained annexe pays for itself in just a few years.
- Increase Property Value: A bespoke, building-reg-compliant annexe can significantly boost your home’s resale value and appeal to a wider market.
- Future-Proof Your Assets: Instead of "sunk costs" in care fees, you are reinvesting that capital back into your own property.
The Annexe Design Process
No two families are the same, and we believe your home should reflect that. While ‘off-the-shelf’ units force you to compromise, our bespoke design process ensures every inch of your annexe is crafted to your specific needs, aesthetic, and site requirements.
Your Journey Starts with a Free Design Consultation
We provide a complimentary, no-obligation site survey to help you visualise the possibilities. Our experts will assess your space, discuss your layout preferences, and provide professional guidance on how to maximise both the functionality and the value of your new home.
1. Choose your Roof Shape
We offer two styles of roof with the Annexe; The Apex and The Pent. Find out more about these two roof options here
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2. Doors, Windows & Walls
You can choose the quantity, style, colour, and positioning of all windows and doors.
We offer both Aluminium and uPVC doors and windows, in variety of sizes, styles and colours available.
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3. Pick External Cladding
We offer a wide range of cladding options that include thermowood, composite and
cedral cladding. Composite and cedral cladding is available in a varity of colours.
4. Finalise Internal Finish
We can advise on what works with the space available, or you can choose your own layout. This allows you to create the perfect home, exactly how you would like it.
5. Electrical & Finishing Touches
Electrics is more of an essential than a finishing touch but we work with you to design an electrical plan that works for your lifestyle and exactly how you plan to use your space whether it's for a kitchen, shower room or anything else. Beyond this, We are on hand to assist as much as possible, including internal decoration, carpentry work, and decking.
Upgrade your Electrical Options
External Electrical Connection
Our partnered electrician would be happy to provide you with a quote to connect the Annexe to your mains supply, or we can leave you to arrange this independently, if preferred. However, this will need to be completed before the Annexe can be signed off by building control.
Internet & Telephone Connection
Should you wish to install a direct internet connection to your Annexe our partnered electrician would be happy to quote for the inclusion of a data cable.
Air Conditioning Units
We work with a trusted contractor to supply and install an AC/heating unit, we can pass there details across to you to liase directly. Alternatively we can add an AC isolator, charged at £60, which is in preparation for an AC unit if you would prefer to install this at a later date.
Customise your Decking
Standard Timber Decking
Our hard-wearing standard timber decking has been tanalised to provide durability. This process involves the wood being pressure treated, forcing the treatment deep into the timber cells. This provides long term protection from rot, fungi and insect attack. With proper maintenance you can expect many years of use out of your timber decking. Pressure treated joists are suitable for both in & out of ground contact and interior & exterior applications.
Upgrade: Timber Yellow Balau Decking
Yellow Balau is a tropical hardwood that offers a unique colour range of golden yellow browns through to pale red browns, which sit beautifully within a natural environment. It is a tight-grained strong timber with an even texture, making it very hard-wearing and durable. Balau is often used in marine construction due to its natural water resistance and anti-slip properties. It also has a natural built-in resistance to fungal decay and insect attack. By looking after your Yellow Balau timber correctly, you can expect it to gradually weather to a silver-grey colour.
Standard Composite Decking
Composite decking creates a contemporary finish to your Garden Room. It is a high-quality, UV-resistant man-made product. It is produced from a combination of recycled hardwood fibres and polymers, along with bonding agents and colour tints. The bonding agent reinforces the wooden components, and the additives improve the decking’s weather resistance. Composite decking is moisture resistant and requires minimal maintenance. It highly durable, whilst being an environmentally conscious option. We offer our composite decking in either a dark charcoal grey or lighter stone-grey colourway.
Order Process & Payment Schedule
initial requirements and receive preliminary quotation.
Annexe FAQs
Our partnered electrician can provide a quote to connect your annexe to your home's mains supply and run a data cable for direct internet access, or you can arrange this independently. Please note that the mains electrical connection must be completed before building control can officially sign off the build.
Yes, all annexes include approximately 500mm of front decking as standard, matching your chosen cladding:
- Timber Clad: Supplied with pressure-treated (tanalised) timber decking.
- Composite Clad: Supplied with standard composite decking (in stone grey or dark charcoal).
- Upgrade: Premium Yellow Balau tropical hardwood is available, along with options for additional wrap-around decking.
Yes. London Timber Buildings handles the full installation, including the fitted kitchen, modern shower room fittings, water heating system, internal plaster finish, and all agreed finishing touches prior to final building control sign-off.
We offer two primary roof styles to suit your aesthetic preferences and planning requirements:
- Apex Roof: A traditional dual-pitched roof that offers extra internal headroom and classic architectural appeal.
- Pent Roof: A single-slope, modern roof design ideal for a sleek, contemporary finish and low-profile building height.
Both options are engineered for full weather resistance, high thermal efficiency, and long-term structural durability.
Absolutely. You have full freedom to choose the quantity, style, colour, and positioning of all doors and windows. We offer both uPVC and premium Aluminium glazing options, including French doors, bi-folds, and sleek sliding systems in a wide spectrum of colours and finishes to match your property.
We supply a variety of low-maintenance and natural cladding finishes designed to protect your annexe from the UK climate:
- Thermowood: Heat-treated, highly durable timber with a rich, natural wood finish.
- Composite Cladding: Eco-friendly, recycled wood-polymer cladding available in multiple modern colours (such as charcoal and stone grey) that requires virtually zero maintenance.
- Cedral Fibre Cement: Premium, fire-resistant, and weather-proof cladding available in an array of factory-applied colours.
Every pre-wired annexe leaves our factory equipped with a full standard electrical setup, including:
- 7x double plug sockets (white finish as standard)
- 12x internal chrome downlights
- 2x exterior wall lights
- Dedicated consumer unit and pre-wiring for kitchen appliances, shower room, water heater, and extractor fan.
Additional sockets, switches, or custom finishes (such as brushed steel or black) can easily be added to your plan during the design consultation.
Let us take away the guess work.
