The tower house once formed the centrepiece of a substantial square bawn, a fortified enclosure that measured approximately 49 metres north to south and 45 metres east to west. Today, only traces of this defensive wall survive as footings, visible 19 metres north and 18 metres south of the castle, with no remains apparent on the eastern or western sides.

Historical maps offer intriguing clues about the site’s evolution and additional defensive features. The 1838 Ordnance Survey six-inch map depicts the castle within a small circular earthwork or low platform, with remnants of an enclosing fosse, or defensive ditch, shown running from east to south. This circular feature may represent the remains of an earlier, smaller bawn with its protective ditch. By the 1906 edition of the same survey, this earthwork appears as a rectangular platform, possibly indicating the levelled remains of the bawn associated with Morrett Castle.

The defensive complexity of this site speaks to the turbulent times in which it was built, when tower houses served both as residences and fortifications for the Anglo-Norman and Gaelic Irish families who controlled the Irish countryside. Though the fosse depicted in the nineteenth century maps has left no visible surface traces today, the surviving tower house continues to dominate the landscape, a testament to the strategic importance of this location and the ambitions of its original builders.