Giles posted a solid final round 5-under 67 for a tournament total 13-under 275 to claim the title by a shot from Victorian Ryan Lynch and amateur Nathan Holman.
"It was a good week out here, it's great to see the support this event has had this week with the men and women together has been fantastic," said Giles.
"That made it a lot of fun out there playing, especially over the weekend with the crowds."
Flying under the radar for much of the week, Giles went quietly about his business on course confident that he could take out the title.
"I turned 1-under and probably should have been at least three or four, I gave myself a talking to walking to the 10th tee, made a birdie there and that kind of kicked things off on the back nine," added Giles who secured the win with a birdie on 18.
"It actually got a little bit difficult there on 18, the wind switched and it played a lot longer than it had previously done this week but fortunately the birdie was enough to get it done."
The win is a turning point for Giles who lost his Web.com Tour status at the end of last year and is planning on heading to the US to play mini tour events in 2013. "It does a lot for the confidence, I didn't have the greatest year in 2012 and didn't have a very good summer back here to finish," said the former World Junior Champion.
"Golf is the funniest game, sometimes it falls into place and if I knew when that was going to happen that would be great, but a couple of good solid events the last few weeks and that's given me a bit of confidence going forward."
Giles is now eligible to play the NZPGA Championship in Queenstown
Playing in the same group as Giles, Ryan Lynch's birdie putt on 18, that would have forced a playoff shaved the cup leaving him a shot behind at 12-under 276.
"It was 10 foot up the hill, right to left. I hit it exactly how I wanted to, I was getting ready to put the arm in the air and she spat back out but that's the way it goes sometimes," said Lynch.
"It was a really good week, especially to have Dad on the bag and come so close but what you learn from these experiences is what makes you a better player."
Starting the final round leading Nathan Holman was disappointed not to have finished the tournament out with a win but has was the leading amateur.
"I'm disappointed now but I'll probably look back on it and be happy with how I performed," said Holman.
"I played well today, I kept hitting good shots which I knew I had to but just couldn't get a putt to go."
Finishing at 11-under the card were Stephen Dartnall (WA) and Neven Basic (NSW), while a further shot back again were Aaron Townsend (NSW), Leigh McKechnie (NSW), Steven Jones (VIC) and Bradley Hughes (VIC).
Rounding out the top-10 at 9-under 278 were Terry Pilkadaris (VIC), Peter O'Malley (NSW), Kurt Carlson (QLD) and Craig Parry (QLD).