If you have specific queries about previous, current or proposed building work and compliance with the building regulations, contact your building control body in the first instance.
Os oes gennych ymholiadau penodol am waith adeiladu blaenorol, cyfredol neu arfaethedig am gydymffurfio â'r rheoliadau adeiladu, cysylltwch â'ch corff rheoli adeiladu yn y lle cyntaf.