A. We recommend you check to make sure a business is registered on the Australian Government Business Register and choose a business that has been operating for at least around 5 years. This is because it will ensure you are choosing a business that has passed the initial test of staying in business and that their products and installation standards have been tested by time.
Check here: http://abr.business.gov.au/
Take note of the ‘From’ date of the business name not the ABN dates, as if it’s an individual not a company they may have an ABN from past business ventures or employment.