David,
Thank you for your prompt response.
However, I know that http://trahanarchitects.com/ has in fact obtained several external links (around 20) all pointing back to the homepage in the past 160 days. So are you saying in order for Moz to crawl our internal links (which it's incorrectly has indexed at 0) we should be obtaining external links for more than just our homepage? It sounds to me like the issue is our external links aren't diverse enough.
I also found another discrepancy when looking at a competitors website. According to the Moz tool, http://www.eskewdumezripple.com/ has 144,000 internal links, but there is no possible way this is correct. According to Google http://www.eskewdumezripple.com/ only has 610 pages indexed. That's an insane number of internal links for such few pages. And when looking at the website you can tell just by looking that there aren't 144k internal links. Please advise.