Canadian Prime Minister Justin Trudeau's two top aides are apologizing and are repaying a portion of the $207,000 Canadian (US$157,000) in expenses they incurred in moving to Ottawa from Toronto.

Chief of staff Katie Telford and principal secretary Gerald Butts said in a statement Thursday they followed all the rules but don't feel comfortable about some of the relocation costs.

Trudeau, elected last fall, faced questions about the moving expenses since they were revealed by the government earlier this week in response to a written question from an opposition Conservative lawmaker.

Both will reimburse the government for miscellaneous moving expenses.

Butts says he will further reimburse for a land transfer tax associated with his family's new Ottawa home.