Hey guys...I'm a first timer. As an unmarried, "more mature" woman with no building experience, I was hoping for some advice from the experts. In August I picked up a small SFR in Irvine (780 sq ft), w/no mella roos or HOA; decent size lot. Looking to research the cost of building it up/out, but I don't know where to begin. Don't want to get too financially vested just to find out I can't afford it. Don't want to get someone looking to take advantage. Suggestions welcome.