Housing Rebate

Taxpayer purchased property & received rebate.

I think it will have to be paid back after hearing “some” details.
However, with the preliminary information I have, I cannot yet make the determination. Waiting to receive more information.

In the event, it needs to be paid back what are the steps in doing so?

Also, I have been told a few things:
-taxpayer can send a letter to HST for a ruling
-taxpayer sends a letter of explanation with a cheque

How have others approached a similar situation?

Never had a situation like that, but wondering why you would consider being so proactive about it? Why not wait for CRA to review it (which could be up to 2 years later)? Unless you are convinced that the rebate application was fraudulent…then I’m not sure what the process is for cancelling the application.

"why you would consider being so proactive about it? "
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Perhaps the clients would prefer not to be referred to in newspaper pages?..
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Thank you @joe.justjoe1 @Nezzer for your replies