Diploma is a leading property development and construction company with a diverse portfolio of commercial, retail and residential developments. We are listed on the Australian Securities Exchange (ASX: DGX).


Head Office Perth

Our head office is in Perth. Western Australia and we have a proven reputation for innovation, quality and sustainable design.


Diploma has developed a reputation for innovation and quality over its 38 year history, winning numerous industry awards for excellence.

We are a recognised industry leader in sustainable design. Diploma was responsible for constructing Western Australia’s first 6 star Green Star energy rated commercial office building.


Established expertise and industry partnerships

Diploma employs more than 100 experienced staff and has long standing partnerships with a diverse range of highly skilled consultants and contractors.


Growth through balancing community responsibilities

Diploma strives to support the communities within which it operates by balancing its economic, environmental and social responsibilities. This has ensured the business has continued to grow from strength to strength and is poised for a dynamic and prosperous future.