Church and monastic buildings around small courtyard, rubble stone with slate roofs. Church is on S side, nave, chancel and W tower with stone spike spire. Domestic buildings run N with gatehouse on W side and 2-storey E range with NE corner semi-fortified tower.
Pembrokeshire square W tower, 9 m high, unusually splayed out at ground floor N and S sides with sloping haunches and battered bases. Broad segmental pointed W door with stone voussoirs and recessed double boarded doors. First floor flush C14 2-light window with renewed tracery. Cusped heads to narrow lights and small quatrefoil. Single small loop at 2/3 height, corbels to deep embattled parapet, the battlements chamfered, and recessed stone spire some 5.4 m high, leaning some 0.98cm to W. Nave S has stair projection to left with battered base, and then 2 tiny c1900 2-light windows under eaves, 2 blocked rectangular openings with red brick heads below and a large plain rectangular opening (former door) to right with recessed glazing. Chancel is lower, windowless to S and with slate roof partly lean-to against gable-end of E range, which is built on top of chancel vault. Big coped E gable, considerably higher than roof, with C19 coping, finial and hoodmould to big pointed E window, presumably of c1900. Nave N side, to courtyard, has 2 similar c1900 windows under eaves and board door to left. Blocked earlier C19 window to centre with brick head.
Gatehouse range to NW has slate close-eaved roof, except at right end where short rubble parapet and masonry break marks church NW corner. Big first floor corbelled chimney left of centre with renewed circular shaft. C19 square loft opening to left of chimney, under eaves. Ground floor has 2 very small openings to left and segmental-pointed entry to right with stone voussoirs, set in wider blocked entry also with stone voussoirs. Masonry of ground floor continues to left as side wall of demolished further building. E front to courtyard: rough segmental-pointed arch to left (to through-passage but larger than arch on W side) with stone voussoirs, the walling here recessed below 10 close-set rough corbels, the recess stopped at line of right jamb of archway. Above are dove-holes in 3 tiers, some blocked, some with surviving shelves, disposed each side of small stone-traceried 2-light C16 or late medieval window with cusped heads, traces of hoodmould and missing mullion. Facade to right of entry has low arch to undercroft with rough stone vouussoirs, and small rectangular recess with slate head, set low to left. Another rectangular opening at mid-height to right. First floor has dove-holes in 4 irregular rows, C19 casement pair under eaves to left (roughly central to whole range) and square opening set slightly lower to right. N end wall stone outside steps to loft door. Single stone lancet to left. .
E range has prominent rendered S gable on chancel roof of church, dated to C16. First floor small window. Stepped gable coping, chamfered like battlements of tower, small square centre stack. Slate roof has big roughcast ridge stack towards right with stepped N side and projecting capping. W front to courtyard has tiny ashlar rectangular light at first floor just right of chimney. Masonry to the ground floor is considerably disturbed. Centre and left has projection for mural stair, centre full-height with 2 small stair lights at different levels and square opening splayed back to narrow loop, at ground floor. Left projected walling has pointed arched doorway with stone voussoirs set in broad blocked arch, but wall above is set back to original plane, with modern opening to first floor. Rear E is much obscured by ivy. Wall and roof set back at upper level each side of a projection (shown as a chimney gable by Colt Hoare), 2 square-headed openings to left, one to right. Ground floor C19 opening with red brick head to right, another possibly original, much damaged to left.
Prior's Tower has slate roof behind corbelled embattled parapet on N and E with loops in battlements, W side to court has corbels but not battlements. This side may have adjoined lost N block. Stonework is patched, showing line of tall opening in centre. Two ground floor openings with timber lintels. N end has 2 small C19 casement pairs well-recessed under brick heads, at ground level and first floor tall C19 opening with timber lintel. E side has projecting turret to right with similar battlements, small pointed stone window to centre of first floor and C19 door to ground floor with timber lintel.
Attached rear garden wall, possibly C19, rubble stone with doorway in both N and S walls, N doorway pointed.