Where do i claim a sale of a house that we owned but didnt live in. we had a family member living there rent free. so its a capital gain but im not sure where to put it ?

Investors and rental owners

You can declare it on 'schedule 3' under Rental property, depreciable property. Please refer the below link :
https://www.canada.ca/en/revenue-agency/services/forms-publications/tax-packages-years/general-incom...