ORS is Ireland's largest multidisciplinary building consultancy, founded in 1991 and headquartered in Mullingar, County Westmeath, with satellite offices nationwide. The firm employs over 250 people and operates across ten distinct service areas spanning civil engineering, structural engineering, mechanical and electrical engineering, project management, fire safety, building surveying, sustainability, environmental services, health and safety management, and assigned certification. It is also the country's largest fire safety consultancy provider.
The company serves clients in construction, property development, infrastructure, and the public sector, delivering integrated design and build solutions. Its work is underpinned by ISO 9001, ISO 14001, and ISO 45001 certifications, as well as adherence to Engineers Ireland CPD Accredited Employer standards.
ORS has been recognised as one of Ireland's Best Workplaces by Great Place to Work for multiple consecutive years and has received awards for Consultancy Firm of the Year and Engineering Consultancy of the Year. The firm describes its culture as people-first.
