If something of that size is available for that price, there must be something wrong with it.
Something of that size available for that price must somehow be damaged.
事故物件 = damaged goods, stigmatized property
アパートや家だったら、その中で誰か死んだことがあったというのは、「someone must have died there」と言います。
何かの犯罪に関係あるでしょう = it must have been involved in a crime
何かちゃんと動かないでしょう = it probably doesn't work right
The only property you will find for that price and that size is a place where a crime has taken place or someone has died.
この場合、次のような言い方ができますよ。
ーThe only property you will find for that price and that size is a place where a crime has taken place or someone has died.
「その値段でその大きさの物件は、事故物件くらいしかないでしょ」
a place where a crime has taken place or someone has died「犯罪が起こった場所や誰かが亡くなった場所」=「事故物件」と言うことができます。
ご参考まで!