I can't tell how big your spider is. :( But I agree, it's probably not a wolf spider. (The fourth pair of legs is the longest in the wolf spider
I think it might be a fishing spider (Dolomedes tenebrosus). They do hang out in man made structures and are the most common fishing spiders found.
Fishing spiders are similar to the larger wolf spiders in size, shape, and coloration. Species in the genus Dolomedes are called fishing spiders because most live near water and have been reported to catch small fishes and aquatic insects from the water as they walk on the surface. The species Dolomedes tenebrosus is more frequently associated with wooded areas (it would be more accurately classified as a tree-dwelling spider) and is a common household invader in these locations. It occurs from New England and Canada south to Florida and Texas.
The stripes on the legs are characteristic, the shape and size ratio of the thorax and abdomen are right, and they are smaller than their giant cousins that catch minnows (!). The coloration on the abdomen can vary. The females are 1.5 to 2.6 cm *about an inch) in length; males are smaller. The legs of both male and female are banded with alternating brown/black, scalloped rings on the femurs and reddish-brown/black rings on the tibia. Seeing an eye pattern and/or a good side view would help.