For listed building or conservation area consent appeal decisions challenges are made under section 63 of the Planning (Listed Buildings and Conservation Areas) Act 1990.
O ran penderfyniadau apêl caniatâd adeilad rhestredig neu ardal gadwraeth, cyflwynir heriau o dan adran 63 Deddf Cynllunio (Adeiladau Rhestredig ac Ardaloedd Cadwraeth) 1990.