Garden Rooms

Discover bespoke garden rooms with Cornwall Timber Construction, a trusted name across Cornwall. With a strong eye for detail and a fully managed approach, we create high-quality garden rooms designed for year-round comfort, long-term durability and a finish that complements your home.

A Garden Room Built for Modern Living

A well-built garden room gives you valuable extra space without the disruption of moving home. Whether you’re planning a home office, studio, gym, treatment room or hobby space, we deliver garden rooms that feel like a true extension of your lifestyle — practical, comfortable and built to last.

Our service is fully managed from start to finish. From the initial consultation through to final handover, we take care of the build process, including structure, insulation, weather protection and finishes. The result is a clean, well-executed project and a garden room you can use with confidence in every season.

Key Points

A straightforward approach built on quality, performance and experience.

Designed for Year-Round Comfort

Our garden rooms are built to be used all year round, not just in summer. We focus on correct insulation, careful junction detailing and sensible moisture control so the space stays warm, comfortable and reliable through Cornwall’s changing weather. Ventilation and build quality matter just as much as insulation thickness, which is why we prioritise construction methods that help prevent condensation and protect the structure long term. The result is a garden room that feels like a proper living space — solid, dry and dependable for everyday use.

Fully Managed & Turnkey

From the first site visit to final handover, we manage the entire process for you. Clients benefit from one point of contact, clear scheduling and well-coordinated stages, ensuring the build progresses smoothly and efficiently. We guide you through key choices such as layout, glazing, external finishes and performance requirements, so the final space suits both your needs and your property. With consistent oversight and attention to detail, you receive a complete, ready-to-use garden room without unnecessary delays or complications.

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Garden Rooms Roadmap

1. Initial Consultation & Site Visit
We visit your property to discuss how you want to use the garden room and assess access, ground conditions and positioning. This helps us recommend the best size, layout and build approach for your garden and goals.

2. Design, Specification & Budget
We agree the design, finishes and performance requirements, including insulation levels and intended year-round use. At this stage, we also advise on practical considerations such as glazing, ventilation and heating options, so the final space works exactly as you need it to.

3. Pre-Construction & Logistics
Once approved, we create a realistic schedule and organise materials, site setup and delivery planning. We also put sensible protection measures in place to keep your garden tidy and minimise disruption during the build.

4. Build Phase
The structure is built efficiently, with weather protection, insulation and detailing completed in the correct sequence. External finishes such as timber, composite, uPVC or slate-style cladding can be selected to match your home and maintenance preference, with correct detailing to support durability.

5. Snagging & Quality Assurance
We inspect key stages to ensure the build meets agreed specifications, including structure, insulation and finishing. Final adjustments are completed promptly to ensure a clean, high-quality result.

6. Handover & Aftercare
Your garden room is handed over ready for use. We remain available after completion to provide advice or support if you have any questions once you begin using the space.

home renovation
Results of bedroom renovation

Quality and Satisfaction Guaranteed

A garden room should feel like a proper room — not a shed. We build garden rooms with a focus on strength, weather protection and long-term performance, ensuring the structure remains reliable, comfortable and visually consistent over time.

Quality depends on correct build-ups and detailing, not just surface finishes. We prioritise insulation and moisture management so the room performs well in real day-to-day conditions, reducing condensation risk and helping the structure stay dry and protected. External finishes are installed with careful consideration of exposure, durability and upkeep requirements.

The result is a garden room that’s practical, well-finished and built for regular use. By combining craftsmanship with a performance-led build approach, we deliver spaces that feel solid, warm and dependable for years to come.

Transformations That Speak For Themselves

See real before & after results from garden rooms projects

Everything You Need to Know - FAQs

Answers to Your Most Common Renovation Questions. If you have any other questions, feel free to contact us.

In many cases, a garden room can be built under permitted development, but it depends on factors such as the building’s height, overall size, placement within the garden and proximity to boundaries. Restrictions can also apply if your property is listed, in a conservation area, or subject to specific planning conditions. During the consultation stage, we assess your site and explain what is likely to be required, so you can move forward with clarity and avoid surprises later.

Yes — when built correctly, a garden room can be comfortable throughout the year. The key is correct insulation, careful detailing and sensible moisture control so the internal environment remains stable in both summer and winter. We build garden rooms with year-round use in mind, which helps reduce cold spots, overheating and condensation risk. This makes them ideal for uses such as home offices, studios, gyms, treatment rooms or hobby spaces.

Timeframes vary depending on size, specification and the finishes you choose. However, garden rooms are generally faster to deliver than many traditional building projects due to their efficient footprint and build process. Once the structure is progressing, internal works can follow in a planned sequence to keep momentum on site. We provide a realistic schedule during the planning stage and keep you updated throughout, so you know what to expect at each phase.

Garden rooms offer a wide range of finish options to suit different styles and maintenance preferences. Popular choices include natural timber cladding for a warm, organic look, composite cladding for low maintenance, uPVC finishes for a clean, crisp appearance, and slate-style cladding for a more premium, durable exterior. We help you choose a finish based on your preferred look, exposure to weather (including coastal conditions) and how much upkeep you want over time. Correct detailing behind the finish is essential, so we always specify build-ups that support durability.

Yes — a garden room should be designed to cope with wind, rain and seasonal temperature changes. Durability comes down to a solid structure, correct weather protection and careful detailing at junctions, openings and external finishes. We focus on build quality and appropriate material choices so the garden room remains stable, dry and dependable over the long term. With the right finish and correct construction, it will perform reliably in Cornwall’s conditions.

Maintenance depends mainly on the chosen external finish rather than the structure itself. Composite and uPVC finishes are typically very low maintenance, while natural timber cladding may need occasional treatment depending on exposure and the look you want as it weathers. Correct build methods and moisture control also play a major role in keeping the building healthy over time. We can advise on finish options based on appearance, lifespan and how hands-on you want to be with upkeep.

Why Choose Us?

Local Cornwall Experts

We know Cornwall like the back of our hand, ensuring you get the best insights.

Personalized Service

Your goals are our goals, and we're here to make them happen.

Integrity and Trust

We build lasting relationships based on transparency and trust. We are only use the very best and locally sourced materials.

Community Focused

Proud to be part of the Cornish community, we support its growth and well-being.