Water Mill & Wheel House at Felin Fawr Slate Works

Simple, low rectangular plan building, aligned roughly north-south with small lower hip-roofed addition attached to north end, the hipped ends aligned east-west. Coursed slate slabs; hipped slate roof with projecting boarded eaves to both main range and addition. West side of main range has doorways to left and right flanking central wide doorway, all under long slate lintels and blocked at time of inspection. Addition to north end has infilled doorway on west side. Lean-to on east side of main range.

Interior retains a 26 ft (7.9m) cast-iron water wheel of 1906 set low in wheelpit.