Truth Time Again: Since there isn't a recognized "certification" process for church consultants, anyone who's written a book, gotten a degree, or served a church can become one. And just because someone is (or was) a successful pastor that doesn't mean they have what it takes to be an effective church consultant. For instance, consider Bart Starr and Michael Jordan as examples of great players, but dismal coaches. 

So, what should you expect from a church consultant?

• Experience: How many churches and church leaders have they consulted/coached? If they're "new" to consultation work they should be apprenticing with a known consultant or consulting firm.
• Honesty: What sort of results has the consultant experienced? Remember, the vast majority of consultations end in failure - most often because the church opts to not adopt the recommendations. 
• References: At least three ... and make sure you call them and ask tough and probing questions about the consultation and the results of the consultation process. 
• Customized Recommendations: Your church and situation is unique, so the recommendations your consultant offers should be developed specifically for you. One size simply doesn't fit all. 

In the end, the best recommendations in the world won't change a thing if the consultant can't cast a compelling vision to the church leaders. Make sure your consultant has the energy and presentation skills to "sell" their recommendations to the congregation. (On the other hand, even the best consultant rarely convinces everyone ... some church members simply won't be convinced.)