Builder cautioned over Karrinyup roof issues – Mulvay Pty Ltd and Mark Anthony Mulvay

A Karrinyup builder has been formally cautioned over the roof construction at a $1.1 million home, which did not comply with approved plans and building standards.

The Building Services Board found that Mulvay Pty Ltd (BC10975) and its nominated supervisor, Mark Anthony Mulvay (BP9892), breached WA’s building registration laws by not properly managing and supervising a building service.

The two-storey brick home in Karrinyup was built by Mulvay Pty Ltd between 2012 and 2014. In 2016, a building inspector’s report, commissioned by the home owners, identified issues with the metal-clad roof such as incorrectly applied nails and the absence of tie-downs and blocks. 

A building dispute and State Administrative Tribunal hearing concluded in 2018.

Building and Energy A/Executive Director Saj Khan welcomed the Building Services Board’s recent decision to issue a caution.

“Building contractors must ensure their services are properly managed and supervised, while the nominated supervisor must ensure applicable building standards have been met,” Mr Khan said.

“I acknowledge Mr Mulvay’s cooperation in the investigation and that this is the first disciplinary matter for him and his business, which has now implemented a more comprehensive inspection program for their roof constructions.

“However, non-compliance with approved plans and building standards in areas of high risk, including roof construction, is inexcusable and this case should remind everyone in the industry of their obligations.”

In 2016, Building and Energy completed a comprehensive inspection report into metal roof construction in WA, which has since resulted in a 30 per cent improvement in compliance with tie-down systems.


Notes: BC and BP numbers refer to registration as a building contractor or building practitioner. The registers of building service providers are available online (

Building and Energy (a division within the Department of Mines, Industry Regulation and Safety) was formed in January 2018 by the amalgamation of the Building Commission and EnergySafety.


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Building and Energy
Media release
24 Jun 2019

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