Why choose our services?
Advanced breathable wall systems
Designed to regulate moisture effectively while enhancing comfort, durability, and energy efficiency.
Fully insured operations
Every project is carried out with comprehensive insurance cover for complete peace of mind.
Permanent, climate-resilient structures
Built to withstand changing weather conditions while providing long-lasting performance and reliability.
Transform your Lisburn garden with a bespoke room
CDM Ireland Limited creates custom-designed garden rooms in Lisburn that go far beyond a basic timber shed. Our structures are fully insulated, tailored for year-round use, and feature high-performance materials to suit your lifestyle. Whether you need a garden office for remote work, a private gym, or a salon studio, we handle the full design, planning, and build process. With over 30 years’ experience and a focus on eco-friendly techniques, we deliver spaces that enhance your home, add value, and open up new possibilities. Every project is completely bespoke, crafted to your specific requirements for the ultimate in personalisation.
Eco-conscious construction and lasting quality
We build every garden room using sustainable, ethically sourced materials and advanced insulation methods for a healthy, energy-efficient environment. As a LEED-certified builder, CDM Ireland Limited incorporates Passivhaus principles such as airtightness, superior glazing, and thermal-bridge-free construction, ensuring your space is comfortable in every season. Our membership with the Federation of Master Builders demonstrates our commitment to industry standards and quality workmanship. You benefit from structures that are built to last, easy to maintain, and designed to blend seamlessly with your outdoor space.
What you get with our garden rooms
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Custom internal layouts for work, fitness, or leisure.
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High-performance insulation for year-round comfort.
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Passivhaus construction techniques for energy efficiency.
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LEED-certified sustainable building practices.
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Federation of Master Builders accreditation.
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Permanent, robust structures beyond standard outbuildings.
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Full insurance cover throughout your project.
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Built for residential and commercial use.
The benefits of a purpose-built garden room
A dedicated garden room gives you extra usable space without the disruption of a house extension. With our advanced wall systems and insulation, you enjoy a comfortable environment whether it’s January or July. Each build is fully tailored, from size and layout to finishes and fittings, so your new space meets your exact needs. We oversee the entire project, so you gain peace of mind knowing every aspect is managed by experienced professionals. It’s a flexible, future-proof way to add value and functionality to your home.