Building Commission NSW is the state's building regulator: it handles home building licensing and homeowner complaints, and it runs the online check people use to look up a contractor's licence. Building trade advertising carries obligations under the Home Building Act 1989 and the Australian Consumer Law, and the NSW Government's guidance says they apply online as well as in print, on TV and on radio. Ads need the licensee's name (a registered business name can be used instead), the licence number and the licence category for the work being advertised, and Fair Trading's checklist adds a business phone number. An ad can't show a price that is only part of the cost unless the single, full price is clearly stated too.
The money side is just as specific. For residential work priced over five thousand dollars, including GST, the builder needs a written contract and must give the owner a copy of the Consumer Building Guide. The deposit can't be more than 10 percent. On jobs over twenty thousand dollars, the builder must have Home Building Compensation cover, and owners are told not to pay the deposit until they've seen the insurance certificate and checked it's valid, for example through HBC Check on the Service NSW website. The NSW Government publishes all of this for homeowners, so a site that describes your process in the same terms reads as straightforward. We describe what you do and link to the Commission for the rules themselves; we don't give legal advice.
Approvals shape Sydney builds too. The NSW Planning Portal describes complying development as a fast-track pathway, decided by council or an accredited certifier, that combines planning and construction approval for straightforward proposals, with approvals possible in as little as 20 days. A proposal that doesn't meet the set standards goes through a development application to council instead. If you regularly steer owners through one pathway or the other, put that on the site: it's one of the first things someone planning a knockdown rebuild needs to sort out.
Greater Sydney takes in more than 30 council areas, and clients search by their suburb, not by council. Much of the city's new housing is planned in the NSW Government's growth areas, including the Box Hill and Marsden Park precincts in the North West Growth Area and Austral and Leppington in the South West Growth Area. A builder working those estates should name them; one who sticks to renovations in established areas, such as the Inner West, the North Shore or the Sutherland Shire, should say so just as clearly, so the wrong enquiries don't come in.
We're an Adelaide team on Hutt St and we work with Sydney builders by phone and email. You send your licence details, project photos and the build types you want more of; we send a draft link you can open on site, and you pay nothing until you approve it.