Based in Lancashire, we are a quantity surveying practice specialising in providing computerised 3D ground modeling (for quantity takeoffs and value engineering), 3D visualisations and CAD / BIM services to clients throughout the UK and abroad. Established in 2007 the company has more than 20 years experience in the land surveying, project modelling and construction industries. Opsis has an expanding network of clients, based throughout the UK, including Local Authorities, Civil Engineering Contractors, Building Contractors, Specialist Subcontractors, Consultant Engineers and Architects. Opsis Visuals Limited is an Associate Member of the Chartered Institution of Civil Engineering Surveyors.