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In the particular case of councillors, they are required by electoral law to live or work in the local authority where they are standing. While this is not the case for parliamentary elections, the purpose of publishing addresses is to allow the electorate to judge how well a candidate may be qualified to represent their local interests (which is the basis of our parliamentary system through its division into geographical constituencies).
Like I said before:
Voters should have the right to know if their prospective MP lives within their constituency, but why would they need to know the MP's precise address?
All they need to be told is where the candidate is registered to vote.