That was my first thought, since we had a wolf spider in our house in California a couple of years ago, but this one seemed to be making a nest/web out of dust bunnies under there, so I wasn't sure. I thought they only did their hunting outside.
Oh, and the weather has been super mild here, so the cold didn't drive it in, I don't think.
Do you own a cat? They are good at ridding the house of spiders.
We also keep alive our daddy long legs (letting them live in a couple corners of our house), they are good for eating other bugs and spiders like this.
I've got wolf spiders living in my house. I let be for the most part, they eat other bugs I don't want in the house.