The purpose of a flexibility allowance (PPW 4.2.7 and DPM 5.5.9) is to cater for the under delivery of sites and this should be set at an appropriate level evidenced by the LPA.
Diben lwfans hyblygrwydd (PCC 4.2.7 a Llawlyfr Cynlluniau Datblygu 5.5.9) yw darparu ar gyfer tangyflawni safleoedd a dylid ei bennu ar lefel briodol a nodir gan yr ACLl.