A two-storey, double-fronted, semi-detached house with two-storey extension to rear and single-storey extension to its west gable.  The house was originally a single-storey structure with a thatched roof, until an additional, slate-roofed storey was added in the 1930s.  Early photographs show that the gable extension was previously roofed with corrugated iron, before both it and the main house were raised and re-roofed in slate just prior to WW2.  


Old photographs suggest that Creg y Shee was built on to the existing west gable of Cummal Beg (0046.03), making it the younger of the two properties, and that originally only the westerly or left-hand room had a hearth.