Commercial Interior Design

Working together to develop your business through good design. We understand the commercial need for a well designed interior, through the effective use of space planning with creative solutions. 

Residential Interior Design

Our philosophy is simple. To create unique, beautiful and innovative luxury houses and holiday homes, through memorable interiors. We turn ideas and desires into inspiring and extraordinary spaces for you to enjoy. 

Healthcare Interior Design

We design warm, comfortable and welcoming interiors, through a co-design approach. Working with healthcare professionals, medical providers and end users to create relaxing, desirable and functional spaces for all.

Our Story

Who we are

3idog are a passionate, dedicated and professional interior design consultancy, with studios in Cornwall and Somerset.

3idog was founded in 2009 by husband and wife Steve and Suzanne Coombe. With over 20 years’ experience in commercial interior design, it is Steve’s passion for unique, client-focused design that drives the business. We believe that the relationship with the client is key to the success of the whole interior design process.  As a result, we offer a comprehensive, personalised service.  From conceptual design through to completion, we work closely with everyone involved in the project.


  • Working with Steve is as enjoyable as it is inspiring. On six separate occasions he pushed us to the very limits of our design comfort zone. He pleaded with us to be brave and trust him. Everytime, without exception, he was proven right. Damn him!!

    Hugh Ridgway
    Owner St Moritz Hotel, Wadebridge
  • 3idog worked with us on the interior design of our Mother & Baby Unit, they shared with us their many talents in design, working relationships & tenacity to get to the best outcome. Steve was a pleasure to work with & we are delighted with the ‘non NHS’ design & feel of our space he has significantly contributed to.

    Clare McAdam
    South West Perinatal & Infant Mental Health Clinical Lead
  • The Maylor Yacht Club has been taken from a good build and transformed into an exceptional space by 3idog.

    Roger Graffy
    Owner Mylor Yacht Harbour
  • Your contribution to the Godolphin Arms project has been visionary and we have all much enjoyed working with you. Your ideas, colour schemes, sourcing of products have helped make the GA the beautiful and welcoming building that it is today.

    Mary St Levan
    St Aubyn Estate
  • Steve and his team were an absolute joy to work with, quickly getting to grips with the challenge of helping us to create our flagship dental centre. Our vision was to provide an environment that was comfortable and calming but which also accommodated the complex needs of our patients – quite a tall order, but Steve was flexible and adaptable, offering creative solutions and working with us to transform our initial ideas into something brilliant.

    Vikki Johnson
    Commercial Manager Smile Together

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Located in Cornwall & Somerset

Cornwall Studio – Studio G2, Old Bakery Studios, Blewetts Wharf, Truro, TR1 1QH

Somerset Studio – Abbey Manor Business Centre, Preston Road, Yeovil, BA20 2EN

Tel: 01872 264899