Clients & Testimonials

Our Clients

Whether they are a Builder, Developer, Architect or Engineer our clients choose Osborne + Song because of our specialist experience, service and professionalism that comes standard across our leading construction cost management solutions.


Our leading reputation is built on referrals, repeat business and quality outcomes.

The quality outcomes and confidence that our Quantity Surveying and Construction Cost Planning services provide is why more than 80% of our clients are repeat clients.

“Osborne+Song provides top notch quantity surveying services. The team is extremely professional, highly experienced and performs in a timely and cost-effective manner. We have been working together with Osborne+Song for many years and would certainly recommend them to developers and builders who seeks professional quantity surveying services.” 
Tom Zhang
Truslan Group

“Bijl Architecture has been working with Osborne+Song for several years, and we are always impressed by their professionalism and enthusiasm. Their work is always delivered in a timely fashion and we appreciate the manner in which they engage with us and our range of projects. We look forward to continuing to work with Devlyn and his team.” 
Melonie Bayl-Smith FRAIA
Bijl Architecture

“Osborne+Song provided timely and cost effective Quantity Surveying services to assist in our Development Applications to Council for multi-residential projects” 
Heidi Pronk AIA
Mackenziepronk Architects

“Osborne+Song conscientiously provided prompt and precise service to complete a detailed bill of quantities for a major community infrastructure project. Woollam Constructions has found it a pleasure to work together with this firm and we look forward to many more successful project outcomes in the future.” 
Emma Hill
Estimating Manager
Woollam Constructions

“We find Osborne+Song to be extremely professional in their work and their commitment to projects undertaken for Group N has been exemplary. Although the projects have been of a broad range and varied greatly in type and scale, they have consistently provided accurate quantity surveying service. Their knowledge and expertise provides a confidence to the rest of the team which supports and enhances the opportunity to provide innovative solutions” 
Alek Kapitanovic
Practice Manager
GroupN Architecture. Interior. Landscape.

“This company has engaged Osborne+Song to prepare bills of quantities, detailed estimates, processing builders’ certificates of payments and sundry advice. It has always been a pleasure to work with this firm which has always gave high professional and reliable service. Quantities were accurate and estimating has always proved to be close to the finished cost” 
Robin Edmiston FRAIA
Edmiston Architecture