Over the years of doing inspections in the greater NW I have run into my share of rodentia furrius. The basic rat in the Seattle area is about six to eight inches long without the tail and is generally a rodent that tries to be invisible. Most of the time that I am in an attic or crawl space I will see waste and damage from rodents, but very rarely see the rodent themselves.
A few times over the years I have done inspections for people who are moving from the East Coast to the Northwest and had the house have rodent issues. This has been interesting to me. I’ve had two different clients who, when I came out of the crawl space and mentioned that they have a rat intrusion in their potential new house, have had the color drain out of their faces and have had to sit down. Now in my mind I know people do not like rats in their house, but my personal thought is this is a little bit of an overreaction. One of the clients then proceeds to tell me that when he was a kid in the Bronx, he was about eight and walking down the sidewalk and turned into an alley that was a short cut and got part way down the alley and had a pack of rats chase him back down the alley and down the street! Other clients have stated that the East Coast rats are a bit more brazen and bigger. They wait for the subway with you and do not give a damn as to if you are standing next to them.
Sounds like our Northwest rats are bush league rats.