Rapid Build Home Extension Kits to make life easier for you.
Garden Rooms Stockport
Discover the difference with Extension Kitz: where rapid-build home extension kits make it easy to create warm, stylish, and long-lasting garden rooms in Stockport. As an established, family-run manufacturer, we deliver direct from our Greater Manchester factory, providing you with innovative, factory-made SIP kits that are both eco-friendly and highly energy efficient.
Our easy-to-assemble extension kits contain everything you need to construct a top-quality garden office, gym, art studio, or multifunctional living space tailored precisely to your requirements. Each kit comes complete with clear assembly instructions, a choice of finishes, and is supported by our dedicated customer service from order through to delivery.
Whether you are a competent self-builder or a trade professional, our garden room kits help you add genuinely valuable, versatile space to your Stockport property with the peace of mind that comes from proven, industry-tested British manufacturing. Get in touch to find out more about our garden room extension kits or learn more about Extension Kitz and what sets us apart.
Why Invest in a Garden Room in Stockport?
A garden room is a smart, flexible way to enhance your home with practical, year-round space; without the cost and complexity of a traditional extension. Our Stockport clients use garden rooms in countless ways, from summer houses and dedicated offices, to home gyms, studios, or peaceful retreats. Many also use our kits to create private guest accommodation or relaxing family spaces, applying the true versatility SIP panels offer.
Find more use ideas and inspiration for your bespoke garden room on our service page, or browse our project gallery for real-life examples.
Every Ekitz garden room features double-glazing and full insulation for comfort in every season. Thanks to industry-leading thermal efficiency, you will enjoy a space that remains warm in winter, cool in summer, and helps reduce energy bills for years to come.
A well-planned garden room does more than add space-it transforms how you live. You will soon wonder how you managed without the benefit of a private, multi-purpose building just steps from your home.
Why Choose Extension Kitz for Your Stockport Garden Room?
Extension Kitz are the copyright owners, designers, and sole manufacturers of our self-build extension kits. Our SIP panels are crafted in-house using only responsibly sourced timber and state-of-the-art technology, ensuring each garden room exceeds traditional methods for energy efficiency, sustainability, and strength. When you choose Extension Kitz, you buy directly from the factory and access unmatched product knowledge, support, and genuine value for money.
Ease of Construction
Our SIPS panels provide unrivalled versatility and are engineered for ease of handling and simple assembly, even on tight or awkward sites. Most kits can be constructed by a small team in just a week, whether you are a skilled tradesperson or a confident DIY enthusiast. A detailed pre-assembly check in our factory ensures your kit fits perfectly, while every part is clearly marked for effortless on-site installation. Professional build assistance and support are available if needed.
Flexible Design
Our factory-made SIP panels can be tailored to any size, layout, or specification, with plenty of options for glazing, doors, roofing, and cladding finishes. Whether you are creating a contemporary workspace, a classic year-round garden lounge, or a fully integrated home gym, our design team will help bring your vision to life with bespoke options that fit both your needs and your property’s style.
Exceptional Durability
Extension Kitz panels are up to seven times stronger than standard timber, providing outstanding protection against weather, rot, and wear. All kits are manufactured to rigorous British standards, including fire safety, and are supported by a ten-year manufacturer’s guarantee for complete peace of mind.
Energy Efficiency & Sustainability
Every garden room is built for outstanding thermal performance, reducing heating costs by as much as 60% and allowing for true year-round use. Our SIPs’ foam insulation and precision manufacturing mean no cold draughts or heat loss-resulting in spaces that stay comfortable, cost-efficient, and quiet. Materials are sourced from FSC-certified forests, with sustainable production processes and minimal waste to help protect both your pocket and the environment.
Direct from the Factory
Buying direct from our Greater Manchester factory means shorter lead times, reduced costs, and direct access to our experienced team from first enquiry to aftercare. Our established, family-run operation delivers nationwide and manages your order from design through production, assembly, and delivery-so you benefit from a single, reliable point of contact throughout.
Versatility and Value
SIP construction provides limitless versatility, making our garden rooms ideal for home offices, hobby spaces, gyms, creative studios, guest accommodation, or simply a relaxing haven in your garden. With a range of insulation thicknesses, exterior finishes, and bespoke design options, your garden room will reflect your lifestyle and add significant value to your Stockport home. Research suggests that garden rooms can increase the value of a property by up to 12%.
Minimal Maintenance
Our SIPs require very little maintenance and will not rot or degrade over time. They are designed to last for decades in the British climate with little effort, giving you more time to enjoy your space.
How Much Do Garden Rooms Cost to Build in Stockport?
Every garden room is made to order, reflecting your individual preferences for size, finish, insulation and layout. Use our quick quote calculator for an instant estimate, or contact our team for tailored advice and pricing. We are happy to explain all costs so you can make an informed decision.
Do Garden Rooms Built from Extension Kitz Need Planning Permission?
Many of our garden rooms qualify as permitted development, but planning permission requirements will depend on your specific property and intended use. Our experienced team offers honest, straightforward guidance throughout the design process, helping you comply with all local regulations so your build goes smoothly from start to finish.
More about Extension Kitz in Stockport
We are proud of our roots as a family-owned firm in Greater Manchester, supplying SIP kits for garden rooms, annexes, conservatories, and home extensions throughout the UK. Our reputation is built on years of trusted service, outstanding products, and a lasting commitment to innovation, efficiency, and sustainability. From our in-house design guidance to ongoing aftercare, you always receive the attention-to-detail and reliability only a genuine manufacturer can provide.
Why not get in touch today to discuss how our expertly engineered garden room solutions can benefit your Stockport property?
About Stockport
Stockport is a town in Greater Manchester on the banks of the River Mersey.
The town expanded rapidly during the Industrial Revolution and became a centre for cotton manufacturing and hat making. The Hat Museum is one of the town’s most popular visitor attractions.
How to find us
Our Address
Cemetery Works
Cemetery Road
Radcliffe
Greater Manchester M26 4FT
Email: sales@extensionkitz.co.uk
Phone number: 0330 166 0877
Directions from Stockport
Get on M60 from St. Marys Way/A6188/A626, Crookilley Way/A560 and Exit 25
Continue on M60 to Prestwich. Take exit 17 from M60
Take A665 to Cemetery Rd in Radcliffe