Newquay, Cornwall
01872 211599

Garden Offices

Cornwall Garden Office Installation & Design

Think External Cornwall Garden Office Installations are custom designed and bespoke to each individual customer. Our garden offices and built to the highest timber frame building specification to provide the best lifespan & durability. Our garden office projects are a complete turnkey project, from foundations to the final fit out and decoration we do it all.

Our garden offices are built using traditional timber frame methods and we do not use flat pack kits or modular kits. We build on site, with care and where possible using only local suppliers and local materials. Our build on-site approach allows us to ensure the highest possible quality whilst allowing adaptions on site if required. Most importantly you the client see the build progress over the days and can be part of the process from initial design sketches right through the build.

Cornwall Garden Building Installation

Our garden offices and garden rooms are great for extra space and can be used for a large number of uses:

  • Office
  • Studio
  • Gym
  • Yoga
  • Games Room
  • Cinema
  • Fitness
  • Salon
  • Beauty
  • Garden Annexe


All Think External buildings use a combination of traditional and composite materials. This combination creates stunning, cost effective, no maintenance buildings that will give you a warm, comfortable and professional working environment.

All of our garden buildings are a complete package, from the ground works and foundations to the plastering and electrics, you don't need to worry about a thing. Here's a little more information on what are buildings contain.


Our concrete pad or screw pile foundation system allows rapid installation of the foundations with the minimum fuss. Concrete pads \ screw piles support the heavy duty floor structure, this lifts the whole building away from the ground to ensure the free flow of air under the building, eliminating rising damp, condensation and radon gas.


150mm thick wall panels including exterior cladding, battened air gap, vapor barrier, high specification 50mm Celotex foil backed insulation and plasterboard and plastered. Garden offices as standard are painted internally in white however you can specify any colour.


A heavy duty floor structure sits on top of the concrete pad \ screw pile foundations. This is strong enough for any storage or activity (including gym equipment). We have several options for floor finishes including tiled, carpet, laminate and engineered oak.


We use heavy duty EDPM roofing membrane which provides 25 - 35 year life expectancy. A perfect choice for the Cornish weather!


Think External buildings incorporate the latest A rated reinforced doors and windows, these are the best quality windows and doors available to buy. All windows and doors are also available in any colour. Our windows and doors are manufactured to BS7412 ensuring the maximum insurance recognised security.


Included in our price is a full electrical installation with dedicated fuse board, double sockets, internal lighting, external lighting and even heating. The electrical installation and all cabling is completely concealed within the structure of the building.


Our buildings come with a structural engineers and electrical installation certificates giving you complete peace of mind.

View some of the possible garden room and annex products and finishes here.