The Queensland Certification Experts


Growing from a family owned company, Building Approvals and Advice (BA&A) is committed to providing safer homes for South East Queensland. We specialise in Form 21s/ Form 17s in the Brisbane region and beyond. Our role is to ensure that building work complies with all National Construction Code (NCC), Queensland Development Code (QDC) and Australian Standards (AS).

Click here for more information on the certifier's role.

We'd love to help simplify your Class 1a and Class 10 residential certification. 

As industry experts, we partner with industry professionals such as:  

  • Building designers 

  • Builders 

  • Architects 

  • Engineers 

  • Town Planners 


Due to the complexity of the NCC, we don't have the capacity to take on Owner Builder projects. BA&A does not certify pre existing work. We can not provide retrospective certification


Awarded Building Certification Team of the Year 2016, 2017, 2018 and 2019 by the Royal Institute of Chartered Surveyors (RICS), our team is passionate about collaboration in the construction industry. We  keep our clients up to date with the constant changes by:

  • Being involved in industry events (e.g. Brisbane Pool Spa & Outdoor Living Expo) 

  • Organising regular CPD events and workshops 

  • Contributing to industry associations (DAIA, Timber Queensland, HIA, BDAQ) 

Certification process

The approvals process can be pretty complicated, so we've simplified it below. Not every approval will follow this process exactly, but it should apply to the majority.

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Additional Services

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BA&A values
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We work efficiently and professionally.


We work collaboratively towards mutually beneficial solutions.


The team at Building Approvals and Advice act ethically every time. We mean what we say, and we follow through on our promises.


We communicate clearly and regularly. We are open and honest with our clients.


We respect the knowledge of our clients. Fair and courteous treatment of others is at the center of our business practice.




Michael Tyrrell
Michael Tyrrell
QBCC: A1197850
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With 20 years of experience in the construction industry as a Structural Engineer and Building Certifier, Michael has been the Director of Building Approvals and Advice for 10 years. He is proud to coordinate the experienced and friendly team at BA&A. His experience in the industry extends from underpinning and renovations, to new homes and house demolition or removal. Whether the job is big or small, building safety is his priority.

Mitchell Walsh
Mitchell Walsh
Building Certifier - Level 3
QBCC: A1234070

Mitchell is our resident residential expert. He has worked with BA&A for a number of years and with a finger on the pulse for industry updates, is a great help to all his clients. He enjoys seeing Brisbane and its surrounds grow and develop and is proud to be a part of that process.

Michael Leahy
Michael Leahy
Building Certifier - Level 3
QBCC: A1233988

Specialising in residential, pool and pool fence certification, Michael Leahy has been ensuring safe and compliant housing for the best part of a decade. Working closely with many pool builders, Michael applies his excellent knowledge of the QDC and pool barrier requirements. 

Michael also has a talent for helping to find solutions for non-conforming building components. Michael is passionate about ensuring that all the projects he works on are built to the highest standard possible and meet the required local, state or national legislation. 

Anthony Ibrahim
Anthony Ibrahim
Building Certifier - Level 1
QBCC: A1316430

Specialising in residential approvals and demolition permits, Anthony has a strong understanding of the Building Code requirements. He also has a particular interest in the Disability Standards, providing advice against the Disability (Access to Premises - Buildings) Standards 2010 and associated Australian Standards.

Anthony is passionate about working professionally and efficiently. He helps BA&A clients achieve a compliant and sustainable outcome.