NadineS, if you always work out of Canada, why do you need a house there? Is that house locked for years, since no one lives there? Or it is rented? If it is rented, I guess it is quiet fair to pay taxes.
My point is since you don’t live in Canada for years, you obviously shouldn't have ties with this country (except of may be family ties and emotional ties)...So just declare a non-residence.

*********************
"What lies behind us and what lies before us are small compared to what lies within us."
Oliver Wendell Holmes