A guidance document, Heritage Impact Assessment in Wales, has been produced to help owners, occupiers and agents understand the assessment process and prepare a heritage impact statement.
Paratowyd dogfen ganllawiau, Asesiadau o’r Effaith ar Dreftadaeth yng Nghymru, i helpu perchenogion, meddianwyr ac asiantiaid i ddeall y broses asesu ac i baratoi datganiad o'r effaith ar dreftadaeth.