Who We Are
Comprehensive Cost Consultancy & Quantity Surveying Across Australia
RBB Quantity Surveyors & Cost Consultants
RBB (Ralph Beattie Bosworth) is Australia’s leading Quantity Surveying and Cost Consultancy firm, proudly established in 1968. With offices in Perth, Melbourne, and Darwin, we deliver independent, strategic cost advice across commercial, residential, government, and infrastructure sectors nationwide.
As Western Australia’s largest independent Quantity Surveying practice, our legacy is built on shaping skylines, supporting landmark developments, and helping clients achieve financial clarity across every phase of construction. From high-rise towers and civic infrastructure to cultural venues and technical facilities, our work reflects over five decades of trusted service and deep industry knowledge.
We are also proud to provide cost consulting for non-traditional projects – such as defence installations, remote infrastructure, and specialist facilities – where precision, innovation, and commercial accountability are essential.
Our Commitment
We focus on meeting the needs and expectations of our clients with the highest standards of safety, quality, and transparency. Every project is serviced by a company Director, ensuring accountability and expert guidance from start to finish.
We maintain an accredited Quality Management System (AS/NZS ISO 9001), and our professionals are certified by AIQS and RICS. Our team combines local insight with global experience, using advanced tools and technologies to deliver fast, accurate, and scalable solutions.
What We Do
At RBB, we offer a full spectrum of Quantity Surveying and Cost Consultancy services tailored to meet the evolving needs of Australia’s construction industry. We provide objective advice to help clients budget, monitor, and control costs and timelines – ensuring every project is delivered with confidence and value.
Our expertise spans cost planning, contract administration, financial reporting, and strategic forecasting. We also offer specialist support for taxation, insurance, and body corporates – equipping stakeholders with the tools they need for sound construction planning and long-term asset performance.
For a full breakdown of our capabilities, visit our Services page.
Our Reach
With offices in Perth, Melbourne, and Darwin, RBB supports projects across metropolitan centres and remote regions. Our national footprint allows us to deliver consistent, high-quality service wherever our clients need us – whether it’s a city tower, a regional hospital, or a defence facility in remote Australia.