It appears that the property in question, 134 North 26th Street is not on the market. When viewing from Trulia's site, it shows that the information was obtained from the PVA (Property Value Administrator's Office). The PVA, when you look on their site, shows that it has been owned by the same person since 01/01/1968. It does show that the owner has passed away. That being said, it is possible that the property is occupied by family.
Sites such as Trulia and Zillow try to provide as much information on as many homes as possible. Now all listings on their sites are FOR SALE. They are just there to provide information if you were looking at homes in the area.
If I can help in any way in your home search, feel free to contact me via email: SElmore@TheElmoreGroup.com or by phone at (502) 777-8181.