I don't know that this is the case here necessarily, but I have seen many realtor sites that are dupicated many times over - they have their personal one, they may have a agency one, and then they may have the same on a national one (century21, realtor.com, remax, etc).
Further, you code needs some attention in my opinion:
You have a CSS file listed:
<link rel="stylesheet" href="./styles/pambishop.css" type="text/css">
but then you have a bunch of style defined in the body tag.
I would suggest checking the path to that css file too; I doubt it begins with a ".".
These are worthless IMO:
<meta name="robots" content="index,follow">
<meta name="googlebot" content="index,follow">
This is concise, but not necessarily clear:
<meta name="description" content="Search the Charleston MLS for Mount Pleasant SC homes for sale.">
Google knows you're there:
http://64.233.161.104/search?hl=en&l....pambishop.com
I just don't think they're paying close attention to you - not in a positive light anyway.