I’m not a designer, but I look at lots of Web sites and I had a couple of thoughts for you as you rethink yours.
First is to consider a more creative layout so all of your text isn’t sprawling across the page horizontally. You might be able to get more examples of your work on your Home page if you used a two column format, for instance. You could even rotate a “featured design” on your Home page every month or so to keep it fresh. I'd also make sure your service area is listed prominently; it's kind of buried now.
You could also experiment with the fonts you’re using and come up with something a little more interesting. Same with your header; you could jazz it up a bit by putting some art in it … maybe a few chunks of stamped concrete could be artfully arranged.
Finally, I think what could make a really big difference is if you could get some photos with people in them, lounging at poolside or barbecuing on the new patio, walking down the pathways, etc. Right now all the photos are pretty sterile. I think it would really warm up your site and make it more engaging for visitors if you could showcase your work in a way that suggests it improves people’s lives.
My 2 cents worth. Good luck to you.
Liz