The most common and most likely answer to this crossword clue is the 5 letter word SLUMS
S
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More clues leading to the result SLUMS
Buddy explains!

The straight part
We know that "bad housing" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case bad housing = slums.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does SLUMS mean?
SLUMS noun- A dilapidated neighborhood where many people live in a state of poverty.
- Inexpensive trinkets awarded as prizes in a carnival game.
- To visit a neighborhood of a status below one's own.