Well, I see lots of reasons.
First, on owners.com, someone looking at price is going to gravitate first to the cheaper 4 bed/2 bath at $209,900. So, as is advised below, definitely check the comps. Get a CMA.
Second, I see you listed yourself as "Make Me Move" on Zillow. But there are two issues I immediately see. First, it appears you're surrounded by vacant lots. And second, on Zillow the "Similar Homes" include one at 579 Ashcroft for $199,900--also a 3/2, but with more square footage than yours--and one at 522 Spring Creek Parkway--also a 3/2--for $184,900. Both have been on the market for a while. Whether or not those are true comps, that's what visitors to Zillow will be comparing your house to.
Third are the interior shots of your house. In the kitchen, hide the trash can and the rag on the stove. Declutter the family room. On the exterior shot, get rid of the trampoline out front. And your house is very bland, externally.
I also concur with the comments below.