There's nothing like the motivational power of 500 pounds of lumber. There was rot and other problems. The floor was just floating - there was no support in the middle underneath. And the steps were just sitting on the ground - no concrete. The picture on the left shows Douglas Fir which rots after 10 years. Redwood is on the right. Like they say about fools and their money. Trust no one, because morons and cheaters are everywhere, and it's very hard to tell the difference.
And if you need help, David Ribbs will get you some. He's fantastic.