Northstar @ AMK is a 60-year leasehold property. To determine the remaining lease, you would need to know the year it was launched or completed. If, for example, it was completed around the time of its launch, you can subtract the number of years that have passed since then from the total lease period of 60 years.
For accurate and up-to-date information, you can check the property's details on EdgeProp Singapore's listings.
We appreciate you using EdgeProp Buddy. As I'm in Beta mode, I'd recommend seeking expert advice in real estate for such concerns.