<prompt> Human: Hi guys, Im 18 work full time and have so for about a year. I work as an electrical apprentice. I earn about 23,000 a year after tax. So the pay isnt great for the next three years although it will go up gradually. Living in Sydney Australia I cant afford to move out, but I kind of need to due it being a small house and a sibling needs my bedroom. A decent apartment in Sydney costs about 400-500 a week, which would leave me no money for living expenses. And I dont want to move too far from the city as the apartments out there are just plain bad.We have a large backyard and my mum suggested a cabin type thing for me to move into. The cabin would cost about 20,000 all up. Using the loan calculator my bank offers, I can borrow 20,000 with weekly payments of 140. Is this a good idea or am I setting myself up for debt with this?Any help would be more than appreciated!  <response>: You can get a room in a share house for half what youre quoting. As an apprentice you may also be eligible for youth allowance.I have strong doubts that you can build an up to code granny flat for 20,000, and while you may be able to get away living in an illegal unit for a while, in the end it would be money down the drain. Id also be amazed if you were approved for a 20,000 loan with no collateral. 