A bespoke garden room is a superb way to add valuable, flexible space to your Altrincham home without the expense and disruption of a traditional extension. At Extension Kitz, we specialise in manufacturing and supplying premium, custom-built garden rooms using Structural Insulated Panels (SIPs). Whether you need a tranquil home office, a private gym, a creative studio, or simply a peaceful garden retreat, our innovative kits provide a fast, high-quality, and energy-efficient solution tailored to your exact specifications.

Contact our friendly team for a free quote.

The Ultimate Space Solution for Your Altrincham Property

In a town as desirable as Altrincham, making the most of every square foot of your property is essential. A garden room provides a versatile, year-round usable space that enhances your lifestyle and adds significant value to your home. Unlike a traditional conservatory that’s often too cold in winter and too hot in summer, an Extension Kitz garden room is constructed to the same high standards as a modern house, offering exceptional comfort and durability.

We understand that our clients in Altrincham and the surrounding areas expect the best. That’s why we don’t offer one-size-fits-all products. As the sole manufacturer of our system, we provide a truly bespoke service. Every garden room kit is designed and fabricated in our 40,000 sq ft Greater Manchester factory to your precise dimensions, layout, and design preferences.

Why Is a SIP Garden Room the Best Choice?

Structural Insulated Panels are an advanced construction material that provides numerous advantages over traditional building methods, making them the ideal choice for garden buildings.

Superior Energy Efficiency: Our SIP walls offer outstanding thermal performance, keeping your garden room warm and cosy in winter and comfortably cool in summer. This high level of insulation means significantly lower heating costs and a comfortable environment 365 days a year.
Rapid Construction: The majority of the work is completed off-site in our factory. This means your custom kit arrives ready for rapid assembly. The structure can be erected and made watertight in just a few days, minimising mess and disruption in your garden.
Eco-Friendly Building: We are committed to sustainability. The timber used in our panels is sourced from sustainable forests, and our precision manufacturing process drastically reduces construction waste. The energy efficiency of the final building also lowers its lifetime carbon footprint.
Strength and Durability: Our SIPs create an incredibly strong and robust structure. Once assembled, it is up to seven times stronger than a conventional timber frame and is built to withstand the worst of the British weather, ensuring your investment lasts for decades.

A Bespoke Garden Room, Designed for Your Life

The beauty of an Extension Kitz garden room lies in its versatility. We can create a space that perfectly serves your needs, whatever they may be.

The Perfect Home Office

Create a peaceful and professional workspace just steps from your back door. A garden office provides the ideal separation between home and work life, allowing you to focus without distractions. We can design your office with plenty of natural light and all the necessary electrical points for a fully functional working environment.

A Private Home Gym

Avoid the time and cost of a gym membership with your own private fitness space. Our SIP structures are strong enough to support heavy equipment, and we can customise the design with features like a reinforced floor, extra ceiling height, or mirrored walls to create your perfect workout zone.

An Art Studio or Hobby Room

Unleash your creativity in a space designed to inspire. A garden studio filled with natural light provides a tranquil setting for painting, crafting, music, or any other hobby, away from the hustle and bustle of the main house.

Why Choose Extension Kitz for Your Altrincham Project?

As a family-run business and the sole manufacturer of our innovative building system, we offer an unmatched level of expertise and quality control.

Direct from the Manufacturer
When you work with us, you are dealing directly with the experts who design and build the product. This removes any middlemen, ensuring clear communication and better value. Our experienced team can provide expert advice from the initial design concept through to the final installation.

Precision Engineering
Every garden room kit is pre-assembled in our factory as part of a rigorous quality check. We ensure every component fits perfectly before numbering each piece for straightforward on-site assembly. This guarantees a flawless build and a stress-free process.

Flexible Installation Options
Our kits are designed to be accessible. You can choose to have your garden room installed by one of our trusted preferred installers, or if you are a competent DIYer or have your own builder, we can supply the kit directly to you. Our technical support team is always on hand to assist.

You can learn more about our company and see our factory in action on our about page.

Start Planning Your Dream Garden Room Today

If you’re ready to enhance your Altrincham home with a stylish, versatile, and energy-efficient space, get in touch with Extension Kitz. Let us help you design the perfect garden room that meets your needs and exceeds your expectations. Take a look at our gallery for inspiration from our past projects.

Contact our friendly team for a free quote.

Frequently Asked Questions (FAQs)

Do I need planning permission for a garden room in Altrincham?

Often, you don’t. Garden rooms typically fall under ‘Permitted Development’ rights if they are single-storey, under 2.5m high near a boundary, and don’t cover over 50% of your garden. However, rules can differ for listed buildings or in conservation areas. It’s always best to check with Trafford Council, and we can offer guidance if you need it.

How long does it take to build a SIP garden room?

One of the biggest advantages is the speed. Because the kit is prefabricated, the main structure can be assembled and watertight in just a couple of days. The entire project, including foundations, finishing, and electrics, is often completed in a few weeks, not months.

How much does a custom-built garden room cost?

The cost is generally more affordable than a traditional extension. Factors like size, window choices, and exterior finishes will influence the final price. Our process is transparent, and because we manufacture everything ourselves, we offer excellent value for a premium, bespoke product.

Can the garden room be used all year?

Yes, absolutely. This is a key feature of our SIP construction. The superior insulation ensures the space is as warm and comfortable as any room in your house, making it fully functional throughout the year.

About Altrincham

Altrincham is a historic market town in Trafford, Greater Manchester, renowned for its affluent character and high quality of life. As a key part of the “Cheshire Golden Triangle,” it has transformed into a vibrant commuter town with a celebrated food scene, centred around its award-winning Market House. Altrincham boasts excellent transport links, including a Metrolink and train station, top-performing schools, and a mix of beautiful Victorian architecture and modern developments. Its proximity to leafy suburbs like Hale and Bowdon makes it one of the most sought-after residential areas in the North West.