It's advisable to consult your local council's planning department or website for documents and guidance specific to your area, as regulations and requirements can vary.
Fe'ch cynghorir i droi at adran gynllunio neu wefan eich cyngor lleol i gael hyd i ddogfennau a chanllawiau sy'n benodol i'ch ardal, gan y gall rheoliadau a gofynion amrywio.