We will retain your contact details for as long as you have ownership and / or occupancy of the listed building, scheduled monument, registered historic park or garden or wreck site.
Byddwn yn cadw eich manylion cyswllt cyhyd â bod gennych berchenogaeth a / neu ddeiliadaeth yr adeilad rhestredig, heneb gofrestredig, parc neu ardd hanesyddol neu safle llongddrylliad cofrestredig.