It can actually be very useful and far less expensive to set up a portrait studio in your own home than setting one up in a leased building in Brisbane. You don't even need a ton of equipment to first set it up, just a few good items to help you get started such as a diffuser box, white vinyl backdrop and a couple of small lamps. That is about all you will need for the most basic of setups. It will get you started.
The diffuser box is rectangular and is white and it is a covering that you will place over the top of your lamp. It will help to take the harsh and direct light that comes from lamps and will make it more diffuse which is far better for pictures done in a portrait studio in Brisbane.
You can even make your own diffuser box if you are really on a budget, this is known as a soft box. You just need to get some wire coat hangers and then untwist them. Then work the pieces together by taking the hanger wire and wrapping the wire around the ends of the other hangers you have untwisted. Make a few big square shapes out of these and then use some extra large white t-shirts and wrap those around the hangers. These make great and cheap soft boxes for your home portrait studio in Brisbane.
You must get a vinyl backdrop, this is essential. This creates a distraction free space to take the photos at. You can buy this at most any hobby store. You should buy more of this vinyl than you think you may need.
Finally, the lamps. You are going to need two because you want to make sure that you get rid of all the shadows in your photos. You generally can just put one on the right and the other on the left and that should be enough. If you think you might need a third one, you would place that one in front.
As time progresses and you are getting more people to come to your home portrait studio you are going to want to improve your studio. You can add some of the other items that most photographers feel are needed: