Garden Buildings - Learn More

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Why choose us?

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Bespoke high quality products.

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Best materials available.

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Mains connections.

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Ground prep.

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10 year insurance backed guarantee. 

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£5M public liability and £10M employee liability

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Handcrafted on site by experienced and skilled carpenter/ joiners .

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All trades available as stand alone projects. 

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Smooth plaster finish, no prefabricated panels or join strips.

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Full planning permission (where required) and building regulations service.

What our clients say...

"We contacted the Thain Company to build a fully insulated Garden Office and they built us something perfect! Dan and Rob worked with us to create the size and shape for the building that fit exactly what we needed. Their work ethic is to be admired and was noticed by our neighbours! They were here at the start of the day and worked until dark. The men set up everything, they ordered and installed all supplies, had a skip and port-a-loo set up from the beginning, and the whole build was finished in a week!! We cannot recommend them highly enough and are setting up a quote for further renovations for the rest of our home. Thank you Boys!"
Kate Hobson – Bristol

Find us on instagram @thaingardenrooms

Click any image below to view our projects


Let us take the guess work out of designing your new room with a full 3D model of your perfect room, completely free of charge.


No deposit, no obligation.

Something so pleasing about this image.

Each and every Thain Garden Room is bespoke built on site, by a team of master craftsmen. No prefabrication to be found here, just experienced professionals, doing what they love to do.  Fully insured  and qualified.

stopdigging - foundation system we use

We only install ground screw foundations, manufactured to CE standards using steel to ISO630Fe360A and galvanised to DIN EN ISO 1461 standards. They are known throughout the industry as the market leaders in build quality and design. click image to see installation video. 

10 year warranty on or Garden Rooms

We are so confident in our rooms that where required our rooms are inspected and certified by an independent  building control officer. Each room is built to last and comes complete with a  10 year insurance backed guarantee.

Start your project with us!