GM Construction London specialises in delivering luxurious house extensions, new homes and apartments for clients all across London, Berkshire, Surrey and Buckinghamshire. GM Construction London has over 40 years of combined experience. 85% of our clients are recommended to us by word-of-mouth, and we’re pleased to have built such a good reputation year after year. GMC London also offers a design and build service, and will also work on behalf of our client’s architects if preferred.We have completed over 120 house extensions and 7 new build projects which have ranged from 1-20 units.