A primary tenant is the main person who rents or occupies a property, such as a house or apartment. They are the main individual responsible for paying rent and managing the property. Full definition
Fresh off an exit of his own company, Bachman has turned his house into an «incubator,» and lives, eats and breathes with its primary tenant: The team from Pied Piper, our heroic, hapless startup. (entrepreneur.com)
The DC began as a small mastermind in 2011, and still holds this as one of its primary tenants and value propositions. (entrepreneur.com)
Either way, nice dose of MLS - level BS giving a team an advantage due to not being a primary tenant in their stadium. (sbnation.com)