Access to the site is straightforward:
From Brecon: Take the A40 East out of Brecon (Signposted Abergavenny). After 1 mile turn onto the attractive B4558 (Signposted Pencelli) and follow the brown caravan and tent signs. Go south for 2 miles until you reach the village of Pencelli. As you pass through the village Pencelli Castle is the last place and is signposted on the left.
From Abergavenny: Take A40 towards Brecon. 6 miles from Brecon turn left for Talybont On Usk. In the village, at the T junction, turn right. Pencelli Castle is the first place on the right in the next village, 2 miles.