Extending a grade II listed Bastle.
Location: Wark. Northumberland.
Project Type: extension to a Listed Building.
A bastle (or bastille House) is a fortified farmhouse built for defense along the Anglo-Scottish border, an area plagued by the Reivers or raiders. This particular bastle has walls over 2 meters in depth, and has characteristic small windows. It is build on the edge of a steep ravine which provides views to the West over the North Pennines.
'We employed Mr Carvell to develop our ideas to extend the kitchen of our Grade II listed house. He was very pleasant and enthusiastic........At all times communication was excellent, always responding promptly. He made his charging policy clear at the outset and there were no unexpected charges. I would use Mr Carvell's services again and would recommend him wholeheartedly.'
Given the history of the property is is no surprise English Heritage requested a sensitive approach to development . We were unable to alter the existing building at all, but were given permission to partially demolish and re-build the existing extension on the side of the original farmhouse.
Listed buildings can benefit from more contemporary extensions, helping to provide a clear division of where old meets new. In this project we worked with the planners to develop a more contemporary scheme.
The extension has a slight recess where it meets the existing bastle, which lines the connection through with the stepped roof of the 2 storey bastle buildings. This serves to minimise the impact of the extension.
We extended out the rear wall of the kitchen towards the ravine, to make the most of the natural views over the Pennines. A small door to the side leads to a boot room, which itself leads onto the patio area that was previously accessed along a narrow path at the top of the ravine. The new patio provides a space for sitting out in the evenings. The rest of the property by its very nature is very isolated from the surrounding landscape, particularly given the thickness of the walls and small windows, so this feature window provides a great place to sit and take in the views.
We provided a set of study models to communicate the construction of the extension. The large full height window openings meant the roof had to be supported off a steel frame, that was made on site to carry the loads. The steel roof and walls were designed to ensure the steel was entirely on the warm side of the insulation to avoid thermal bridging, a detail normally associated with PassivHaus design to keep heat loss to a minimum.
The large window provides a dining area adjacent to the kitchen that provides the only place int eh entire house where you can sit and see both the sky and the ground, both at the same time. The model demonstrates how the building meets the existing two-storey structure. It was important to demonstrate the junction did not detract from the original building.