A tripartite agreement is a legal agreement or contract between three persons or parties. These agreements can be a useful instrument for creating a tripartite working relationship to increase your international staff. When designing a tripartite agreement, the following important elements should be taken into account: a tripartite agreement is a business agreement between three different parties. In the mortgage sector, during the construction phase of a new housing complex or condominium complex, a tripartite or tripartite agreement is often concluded in order to guarantee so-called bridge loans for the construction itself. In such cases, the loan agreement involves the buyer, the lender and the contracting authority. .