Garden Annexe Utilities: Water, Electricity, & More

When you're planning a garden annexe, getting the utilities right is just as important as the layout or design. Whether you're creating a self-contained space for guests, extended family, or just as an additional space to your home, having fully integrated services is what turns a garden building into a comfortable, usable living space all year round.

At London Timber Buildings, we ensure every annexe we build is equipped to meet real-life needs. Here's what to consider when it comes to connecting essential services like electricity, water, heating, and more.

Electrics: Built In, Thought Through

Electrics aren't just a finishing touch, they're fundamental. That’s why all of our garden annexes come pre-wired as standard, ready to support a modern lifestyle.

Each annexe includes:

• A consumer unit
• 2x exterior lights
• 7x double plug sockets
• 12x internal chrome down lights
• 2x wall heaters
• Electrical points for a kitchen setup
• Electrics for shower, heated towel rail, water heater, and extractor fan

We work closely with you to plan the electrical layout around how you want to use the space, from cosy bedrooms and bright workspaces to kitchen appliances or bathroom essentials. Want extra sockets, wall lighting, or air conditioning? No problem. We can customise the electrical spec exactly to your needs.

Water & Waste: For Kitchens and Bathrooms

If you're adding a kitchen or bathroom, water supply and waste management are key. Our experienced team can help guide you through the process of connecting to your existing water mains and drainage systems.

Depending on your location and intended use, this might involve trenching for pipework, installing pumps, or coordinating with local professionals. It might sound complicated, but we've done it all before. Our trusted installers ensure the process is handled efficiently and in line with regulations.

Wondering whether you need planning permission for a garden annexe? Take a look at our blog to learn about the process and expert advice.

Heating: Year-round Comfort

Every annexe includes two wall heaters as standard to keep things cosy, even in the chillier months. For clients who want to go further, we also offer optional extras such as air conditioning units or eco-friendly solutions like infrared panels.

Whether you plan to use your annexe as a year-round guest suite or a relaxing garden hideaway, we make it easy to keep your space warm, dry, and comfortable.

Finishing Touches

Beyond the practicalities, we can help you add those little extras that make a space feel truly complete. Our team is happy to assist with internal decoration, bespoke carpentry, and any decking requirements to extend your living space outdoors.

You can also upgrade finishes to suit your style, from different socket and switch designs to contemporary light fittings.

Annexes Designed for Real Living

We don't just build beautiful timber annexes; we create spaces that work for everyday life. Whether you're installing a full kitchen, an en-suite, or simply need a multi-functional guest area, our garden annexes are equipped to handle it.

With a complete electrical package, water-ready setup, and all-season heating options, everything we do is designed to support everyday living.

Start Your Garden Annexe Project with London Timber Buildings

If you’re thinking about adding a garden annexe to your property, talk to the team at London Timber Buildings. We’ll walk you through everything from utility planning to the final coat of paint, ensuring your space is stylish, functional, and built to last.

Get in touch today to begin designing an annexe that’s ready for real life.

‍