Master Builders, Certified Builders, Independent Builders
While every builder will have to be Please note that there are excellent builders who are not members of either organisation
What guarantees, if any, are offered with the job and are they prepared to make time to come back to do any work that is unsatisfactory.
Builders, especially good ones, may be booked well in advance, so ensure you start looking early in the planning process.
You may choose to have your architect or designer stay on as full project manager or you may have an arrangement where your builder is the project manager and the designer takes on an overview role. Make sure the arrangement is fully spelt out in the building contract
There are specialist project management companies and, while this maybe a bit more expensive, this can take many of the hassles out of the whole building process and will help ensure you have a quality job.