The first monastic buildings on Inner Farne are no longer visible. They were built by Aidan and then Cuthbert, and the passage of time coupled with the weather has removed all sign of these structures. The Venerable Bede, in his Life of St Cuthbert, does though give us some clues as to the nature of these early buildings. Cuthbert's cell, the building that Aidan had first built, was of stone and turf and stood - according to Bede - 'higher than a man'. Another larger structure, a guest house or 'hospitum' probably stood on the site of the present Fish House.
It wasn't until 1370 that we know the present Chapel was in existence, as the building of a new chapel on the site of a previous building is recorded as having begun in 1369, at a cost of £50. The presence of slightly older stone in parts of the north wall suggests an earlier building on the site so at least some of that has been incorporated into the later building. The monks of the House of Farne were wealthy enough to build such structures; they cultivated crops and even had livestock on some of the other islands. Seals were also a valuable commodity as they were classed as creatures of the sea, and so could be eaten on Fridays.