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Business Formed 1987

Karratha Building was formed in 1987 by Rex & Jude O’Leary. It was identified that there was a gap in the local market for quality Building Companies servicing the Commercial, Industrial & Residential sectors.
The Company was formed with a strong focus of local employment and that commitment to the local community and their families became the core value on which Karratha Building was forged.



Karratha Building worked hard to cement their name in the marketplace with a strong focus in the building and maintenance markets. Within three years, Rex and Jude had increased their clientele, securing Government, Mining, Infrastructure, Maintenance and Refurbishment contracts, embedding themselves as a contractor of choice in these industries.



By the mid 1990’s Karratha Building held a reputation as a leading and diverse construction company and employed 35 persons.
Across these industries our commitment to delivering high quality works to key clients such as Rio Tinto Iron Ore, Dampier Salt, Woodside, City Group, WA Health Department, Department of Finance and many more solidified our place in the Industry.


20 years in Business – 2007

Karratha Building celebrates 20 years in Business as we continually expand our service offerings.
The Business has grown and now employs 40 local persons and now covers the entire Northwest Region.



We continue to deliver a diverse range of services across the Resource, Mining and Civil industries with a strong focus on supporting our community in Karratha and the Pilbara.
The Business now provides Electrical & Plumbing Services enabling a full in-house offering to our valuable existing and potential client base.


30 years in Business – 2017

Karratha Building celebrates 30 years in business


Still Built to Deliver – 2022

More than three decades later, Karratha Building Co. provides ongoing employment to around 40 employees and continues to build upon strong business relationships, working alongside our Clients to achieve successful outcomes on Projects throughout the Northwest.

Karratha Building Co. continues to be a proud supporter of many local Sporting & Community organisations, further reinforcing our commitment to local community and families. A core value in which the business was built on.