Steens Gray & Kelly is a leading Consulting Engineering firm in Western Australia specialising in the single discipline of Building Mechanical Services. Steens Gray & Kelly have been providing its services to the commercial construction industry both locally in Western Australia and the eastern states for more than 45 years. Our single discipline focus has enabled us to achieve outstanding recognition in providing excellence in all aspects of Building Mechanical Services design. Steens Gray & Kelly has a Bureau Veritas certified Quality system in accordance with the requirements of AS/NZS ISO 9001. Our firm is audited annually to maintain this accreditation.