Plas Brondanw is the principal house on the estate. This was the home of Clough Williams-Ellis and his wife Amabel, whose work and estate is the subject of this website.

"It had been at about my twenty-fifth birthday that my father unexpectedly handed over to me the control of the old (Williams) family property of Plas Brondanw which I would ultimately inherit," wrote Clough Williams-Ellis. “Gradually but surely the old house and its rehabilitation became my chief absorbing interest outside my profession.”

The estate was enlarged when Clough bought two adjoining mountainous properties threatened by mining.The Brondanw Estate has never been bought or sold and is now owned by a charitable trust for its protection The gardens are open to the public.