There are always some legislative requirements and terms upon which you can construct any building whether commercial or residential. The job of private certifiers is to make sure that the building is in accordance with these state requirements and the plans that were approved for you by the government. They are independent of the government and the work that they certify their complete responsibility. They can act as a Principle Certifying Authority without any input from the Council. Accredited certifiers get accreditation from the board to certify any sort of building or construction. For example, Quality Private Certifiers have a group of accredited certifiers that provides building accreditation services in all areas of NSW. There are many different types of certificates and every accredited certifier cannot issue all the certificates, their certifying range depends upon their qualification and level of accreditation. If you are residing in Blacktown and looking to get a building certificate, Private Certifiers Blacktown will take care of your needs with ease and efficiency.
This should be kept in mind that the job of private certifiers, either in private practice or appointed by the legislative council, is not to supervise your building or draw the plans for your site or even add minor details in it. Their only job is to check and approve whether the plans are in accordance with state's legislative requirements or not, the most that they can do is tell you what's wrong with your plan and why it can't be approved and recommend you a thing or two on how to get your construction plans within the boundaries set by the legislative council.
Every city or state has its own accreditation company of private certifiers and a council of certifiers working for the government. For example, Private Certifiers Blacktown provides certifiers that work privately for the suburban area in the Western Sydney, similarly, Private Certifiers Blue Mountain work for that particular area. The little understanding of the work done by these certifiers can create myths such as accredited certifiers are responsible for self-certification which is not true and the certifiers are prohibited by law to approve their own designs. Hiring an accredited certifier is your choice, not the builder’s; it is also one of the myths that dwell among common men. These certifiers are not self-regulated and they have to be accredited by the government through the building professionals’ board.