About us


Formed in 1975 as part of the Stewart Milne Group we have developed a deep understanding of house building as a result of our 45-year history. This experience gives us a unique insight that helps us support our client-base in the development of their own home building requirements. In 2021 we became part of the Donaldson Group, a company who have been in existence since 1860. We now offer an expanse of experience in the timber industry


Why Us?

Over 45 years experience
Renewable & sustainable
Optimised build time
Nationwide coverage

We are a leading offsite timber frame specialist providing precision made timber frame structures to house builders, developers, contractors and housing associations across the UK. We are one of the most recognised brands in our sector, with a heritage of innovation, offering our customers a diverse portfolio of build systems ranging including our market-leading Sigma ® II advanced build solution.

We have unrivalled expertise in our sector spanning over 45 years.  In keeping with the group philosophy, when we launched in 1975, our aim was always to provide quality build services that meet the expectations of our customers in terms of delivery, performance and cost.

 We have a reputation for being awarded repeat business from key clients based on service and technical expertise and have successfully delivered projects up to £15m in value throughout the UK.

We operate throughout the United Kingdom and have three manufacturing plants in Witney, Aberdeen and Falkirk and regional offices in Glasgow and Milton Keynes and as you might expect, we are passionate about the environment and work hard to reduce the impact that our business has on our planet.


We chose Stewart Milne Timber Systems because of their pricing, the quality of their product and what we’d heard about them from other customers

Chris Barr,
S1 Developments

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0845 835 1527

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