Condo Rental Property and Land Value

We are filling out taxes for a condo rental property and need to put a value for the land. We are in Massachusetts and checked the City assessor database, they put $0 for land value.

I’ve read conflicting information online on whether to put $0 for land value. I’ve read that since it’s a condo we don’t own the land, and the association owns the land, but not certain.

Hoping for clarification.

Thank you

David