Defnyddir cytundebau adran 106 yn eang i ddarparu isadeiledd hanfodol.  Ar y cyd â pholisïau cynlluniau datblygu, maen nhw’n ffurfio cyd-destun ar gyfer sicrhau tai fforddiadwy drwy'r system gynllunio. Llynedd cafodd 29% o’r holl dai fforddiadwy newydd eu datblygu o ganlyniad i’r system yma.
Section 106 agreements are widely used to provide much need associated infrastructure. In conjunction with development plan policies, they form the context for securing affordable homes through the planning system. Last year 29% of all affordable homes were built as a result of this system.