"a creaky shack"
"a decrepit bus...its seats held together with friction tape"
"a flea-bitten sofa"
"a run-down neighborhood"
"a woebegone old shack"

"weed-grown yard of an abandoned farmhouse"

"derelict (or delinquent) in his duty"
"neglectful of his duties"
"remiss of you not to pay your bills"

"a street of bedraggled tenements"
"a broken-down fence"
"a ramshackle old pier"
"a tumble-down shack"