I have now gone from buying my first house renovating and selling it to buying my second house renovating it and selling it and im now just doing my third house up to sell. I have made 15k to 20k on each house. I currently have a mortgage to buy my houses and live there whilst doing them up. My question is how can i take my hobby and turn it into a full time business career. I want to have multiple properties on the go. How do property developers make the jump from renovating their own home to starting up a business ?