Inkdesign has just secured the planning permission and building warrant to extend the main Clyde Blowers office building in East Kilbride as part of a £2.75 million project which is likely to start in the spring of 2014.
The Glasgow firm has also completed a £120,000 refurbishment of 800 square metres of office space to give Mr McColl's company some additional space at its base.
Mr McColl hired Ink-design after being impressed by the extension work the business had done at the headquarters of Michelle Mone's MJM, which is also based in East Kilbride.
Maurice Hickey, Ink-design's managing director, runs the practice along with his wife Lisa Fugaccia, who is creative director, and design director Carlo Guidi.
Mr Hickey has plans to grow the practice in the coming months. He said: "[We are] considering expanding our own office from the south side of Glasgow into the Merchant City area which would enable us to take on more staff.
"Most of our work comes from clients' recommendations and we are now building up an impressive reputation in the commercial, industrial and leisure sectors thanks to people like Jim McColl and Michelle Mone.
"Working with two of Scotland's leading business people has been a great experience. They have a great attitude and trust us to get on with the job.
"Having an insight into the Clyde Blowers story has been inspiring. Jim supports local businesses and is a proud advocate of the creative industries in Scotland."
Mr McColl said he had been "impressed" by Ink-design and added: "Due to the rapid growth of our business and its transformation into Clyde Blowers Capital, we are outgrowing our existing headquarters in East Kilbride.
"Inkdesign's drawings for the proposed extension reflect my vision of an iconic headquarters building befitting our position as a global company based in Scotland."
Inkdesign is also working on a £2m project in Hamilton to turn a Second World War anti-aircraft battery site and gun emplacements into eco-homes and stables.