Linked Outbuildings to S. to S. and Sw of Penlan

The linked outbuildings to the south, southeast, and southwest of Penlan are a 19th-century complex that forms a three-sided courtyard adjacent to the house. The western side of the courtyard extends further north and includes two additional buildings on the west side. The older sections are constructed of rubble stone with grouted slate roofs, while the later additions have slate roofs. The oldest part appears to be the western side of the courtyard and the cart-shed at the northern end, which are shown on the 1840 Tithe map. The western side features an alternating sequence of four doors and four windows, all with red brick cambered heads. The southern and eastern sides of the courtyard were likely added around 1890 and have slate roofs. The southern side consists of two large open stalls with a six-bay front supported by timber posts on pyramidal stone blocks. The eastern side is made of rubble stone on the right, with a broad opening connecting to the southern range and one window on the left, followed by a five-bay open-fronted section that is mostly infilled with corrugated iron. Attractive high rubble walls enclose two yards in front of the southern range, featuring two sets of gate piers with decorative rubble caps and stepped rubble coping, which are said to date from around 1900.

A range of three buildings runs west from the northern end of the western side of the courtyard. The first building, attached to the northern end, is a gable-ended cart-shed with a timber-lintel northern entry and two tiers of dove holes in the gable; the lower tier is interrupted by a small piece of medieval carved cornice, presumably from a cathedral. This cart-shed has a grouted slate roof that is slightly lower than that of the long range behind it. The second building is a tall lofted stable with a grouted slate roof and a symmetrical front, except for large outside steps to the right leading to an eaves-breaking loft door. It has two windows on each floor and a central door, with the lower openings featuring cambered brick heads. The upper windows break a band of brick dove holes, which is interrupted to the left of center by a tall narrow loading door with a slate sill. There is a ventilation loop in the center and a door to the right with a brick head. The northwest angle is rounded, and there is a blocked western door. The interior is lofted.

A "stable, straw-house and cowhouse" were built at Penlan in 1863.