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We tend to look at church growth through the lens of numbers and vision strategy. In this book, Ian Duncum helpfully explores a more holistic understanding of church health by looking at and assessing local church health and growth through tested consultancy ministry. This is an incredible aid to understanding church growth and wellbeing. These insights come from his years of experience in church consultancy and compelling analysis of data. A wonderful addition to healthy church life.

Rev Dr Ross Clifford, AM

Principal of Morling Theological College, Sydney. Author of thirteen books, including Taboo or To Do? and The Cross Is Not Enough.


As we grapple with missional leadership and congregational transformation in the Western world, we desperately need reliable assessments, valid metrics and practical tools for understanding and fostering church health and growth. Sometimes churches need a consultant to come alongside to ask diagnostic, curious and subversive questions. But sometimes consultants need someone else to ask diagnostic, curious and subversive questions of their processes. Ian Duncum has been asking insightful questions for twenty years as a pastor and church consultant and now offers a timely in-depth analysis of church consultancy in a group of Australian Baptist Churches. The Impact of Church Consultancy is a gift and resource for churches, pastors, denominational leaders and consultants to learn about the necessary dance between pastor and congregational system that fosters church health and lays the groundwork for church growth.

Rev Dr Darren Cronshaw

Head of Research and Professor Missional Leadership with Australian College of Ministries (Sydney College of Divinity) and Pastor of AuburnLife Baptist Church. Author of Credible Witness (UNOH 2006), Sentness (with Kim Hammond, IVP 2014) and Dangerous Prayer (Paternoster 2017).


It’s very helpful to see empirical evidence that supports the good work of the church consultancies offered by the Baptist Association of NSW/ACT. Thank you, Ian Duncum for this important contribution to the life of our churches.

Rev Dr Michael Frost

Director Tinsley Institute, Morling Theological College, Sydney. Author or editor of seventeen books, including The Shaping of Things to Come (with Alan Hirsch), Exiles, The Road to Missional and Surprise the World!


Ian Duncum's book is an important study of the impact of church consultancies on church health and growth. When church consultancies are done well, they help churches become healthy, be revitalised, embrace fresh purpose and vision, and grow missionally. This is a valuable and timely book.

Rev Dr Graham Hill

Research Co-ordinator, Stirling Theological College. Founding Director of The GlobalChurch Project. Author or editor of five books, including Healing Our Broken Humanity (with Grace Ji-Sun Kim, IVP, 2018), Global Church (IVP, 2016), and Salt, Light, and a City (Cascade, 2017).


Ian Duncum has done our NSW & ACT Baptist movement a great service in the conducting and reporting of this research. The NSW & ACT Baptist Association has had a longstanding commitment to the value of church consultancies in assisting churches to navigate to greater health and vitality, and for proactive reflection and development. Now we have added clarity about their value, and how this may be further enhanced as we continue to seek to best serve the churches across our movement. His research has value for ongoing reflection in our movement and beyond. I highly commend it to the reader.

Rev Dr Steve Bartlett

Director of Ministries, NSW & ACT Baptist Churches, Australia.

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