1 should know these domestic, local laws (5,5)

I believe the answer is:

house rules

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'1 should know these domestic' is the definition.
I don't know anything about this answer so I cannot tell whether this works.

'local laws' is the wordplay.
'local' becomes 'house' (I am not sure about this - if you are sure you should believe this answer much more).
'laws' becomes 'rules' (rule is a kind of law).
'house'+'rules'='HOUSE RULES'

Can you help me to learn more?

I've seen this clue in The Independent.

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