You can apply for an award of costs if anyone involved in your called-in planning application has cost you money by behaving unreasonably, eg missing deadlines.
Gallwch wneud cais am ddyfarnu costau os oes unrhyw un sy’n ymwneud â’ch cais cynllunio a alwyd i mewn wedi achosi i chi fynd i gostau trwy ymddwyn yn afresymol, e.e.