Brent, before you build, make sure there aren't any more resident rats. The old saying, if you see one, you must have 25 as it takes a large population in order to actually view one. On the other hand, if he was a new resident, he was spotted as he didn't have his hidey hole established yet. Even though they can get large, they fit through a hole the size of a nickle to a quarter so look carefully throughout and using steel wool block/plug any holes otherwise they will enjoy your new cabinets more than you will. If you have pets, mice and rats like horses cannot burp or fart through voluntary muscle control so a pan of coca cola (keep if fresh) will cause death to mice and rats through the explosion of their stomach. Safe for pets and children at the same time. Good luck, mice, snakes, rats, man I hate 'em.
God and family, the rest is icing on the cake.
I'm so far behind, I think I'm in first place.
Premier Bovine Scatologist
Host of the 2015 FAMILY WOODWORKING GATHERING