Innovative, flexible, trusted building and construction advice. Building Surveyors, Quantity Surveyors, Safety Advisors and Project Managers, GNA is a one-stop multidisciplinary practice with a 30 year track record in delivering quality advice to the building and construction industry. Based in the Midlands, with an affiliated office in Plymouth, we are able to cover the whole of the UK and have also worked in the European Union. Together, with our architectural and structural design partners, we deliver our client’s expectations on the most demanding of projects.