About Us

21 Years of Safety and Expertise

Comast Construction are specialists in building and civil engineering works and services, including maintenance aftercare, for both the commercial and residential sectors of London and the South East of England.


We are proud of our 21-year history of safety and expertise, which has given us the opportunity to work on some of London’s most iconic buildings and projects, including: The Shard, The [London 2012] Olympic Games Village, Crossrail, Wembley Stadium, Terminal 5 Heathrow and The Royal Albert Hall… to name just a few.

Health & Safety

Comast Construction takes Health & Safety very seriously, which is why we have achieved ISO 45001:2018 accreditation.

Our clients can be assured that high quality and high standards are maintained, as established by our ISO 9001:2015 accreditation (fully implemented and audited annually).  Our ISO policy manual is also available on request.