One World Builders is a Perth-based builder that delivers high-quality, commercial projects (click here to see our projects) without delays, major variations or cost over-runs.



One World Builders’ Director, Richard Rees is experienced in leading construction of commercial and high-end domestic projects of all sizes and complexities. He has experience in fit-outs, erecting commercial buildings, refurbishing existing structures and constructing premium homes.

Richard creates exceptional projects because of his strong attention to detail, knowledge of the industry and his ability to extract the best out of the people he works with. He creates a positive, safe and effective work environment.

Richard has worked on major civil construction projects before starting OWB in 2012, including for Horizon Power, John Holland, McMahons and Broad Group Holdings. He has also worked for Zorzi Homes, Atlas Holdings and Darwin Roofing.

Richard has a vision of making OWB the leading quality builder in Western Australia.


OWB people are practical, cooperative and have seen the benefits of frequent and transparent communication with our clients and our sub-contractors. These have helped us to build a strong reputation for reliability, trustworthiness and quality delivery.

Our strength is our culture. OWB people strive to add value through good communications and their attention to detail. Hands-on experience and professional management expertise ensure the effective and successful delivery of our projects.

We recently managed 44 tradesmen in a 16-day major refurbishment of the Cavenagh Hotel in Darwin. Managing a major redesign and refit of this major Darwin nightspot was challenging but we delivered the project on time, on budget and with high customer satisfaction.


OWB has a specific trade-letting procedure which is designed to ensure procured products and services meet our requirements for quality. Wherever possible, OWB selects subcontractors that have performed to OWB’s satisfaction in the past. All new subcontractors undergo a review process, which includes a reference check and financial check, to ensure the subcontractors have the required level of experience and capability to complete the works efficiently and effectively.


OWB is a member of the Housing Industries Association and the Master Builders Association.

NT Builders Registration Number 169860CR

WA Licensed Builder Practitioner Number 101594