Nothing is known about this location prior to the apocalypse.
Dwight finds the car identified on the registration he found from Sherry. He scouts the house while John finds a note from Sherry in the glove compartment. In it, she tells Dwight to stop looking for her because she couldn't take it if he died trying to do so and she will always love him. John folds up the note and stares through the windshield, unsure of what to do with it.
Back in the house, Dwight tells John he found supplies inside so Sherry must have been there and claims he's optimistic. He asks John if he found something in the car and John lies, saying he didn't.