It shouldn’t do. Most companies will do all the interior work first, and the last job to do will be creating the opening from the house to the conversion. A reputable company will make sure they cause as little disruption as possible during this time.
Umberleigh
Umberleigh is a former huge manor within the historical thousand of (North) Tawton, but today a small town in North Devon in England. It used to be an ecclesiastical parish, but following the structure of the church at Atherington it became a part of that parish. It creates nonetheless a part of the civil church of Chittlehampton, which is mostly situated on the east side of the River Taw. The estate of Umberleigh, which had its own entrance in the Domesday Book of 1086, was entirely situated on the west side of the River Taw as well as was centred on the Nunnery which was provided by William the Conqueror to the Holy Trinity Abbey in Caen, Normandy. The site was later on inhabited by the manor house of Umberleigh, the present Georgian symptom of which, a huge as well as grand farmhouse, is known as "Umberleigh House". Next to the manor house in about 1275 was founded Umberleigh Chapel, now a mess up the single remaining wall surface of which develops the back wall surface of a ranch implements shed.