The C14 church had a south chancel chapel and the surviving respond and arch of the chancel and a respond to the chancel chapel arch are close enough to work at Kelly church (q.v.) to suggest the same shop of masons.
In the late C15 the nave, chancel and chancel chapel were remodelled and the west tower was built.
The south aisle and south porch are post Reformation (Honey) financed by William Harris of Hayne who purchased the manor in 1555.
The south chancel chapel has a coped east gable and a deeply-recessed 3-light Perpendicular east window with a hoodmould and a square-headed 3-light C16 south window with hoodmould, label stops and replaced mullions.
The south aisle of roughly-dressed coursed stone with some slate lacing has 2 C19 buttresses with set-offs and 4 3-light square-headed C19 stone windows and one 3- light square-headed C16 granite window all with hoodmoulds and label stops.
The rectangular 1871 vestry has a chamfered granite doorway on the east side, and a 3- light square-headed window on the north side with hoodmould and label stops, the heads of the lights look C16.
To the west of the vestry is an arched chamfered pulpit window.
The fine C15 3-stage embattled west tower has ashlar set-back buttresses with set-offs and an internal north-west stair turret with quatrefoil lights.
The arched moulded west doorway has carved spandrels below a square-headed hoodmould with carved label stops.
The C19 granite arch into the south chancel chapel has a similar arrangement with a C14 respond to the south and a C19 granite corbel to the north.
The heavily-moulded tower arch springs high up from carved capitals on moulded shafts.
A trefoil-headed piscina on the south wall could be C14.
5-sided timber drum pulpit of 1910 has pierced tracery sides on a stem with struts.
1910 timber eagle lectern on elaborate pinnacled base.
3 alabaster three quarter size figures kneel on a moulded half-chest on a plinth.
A central cartouche with an armorial bearing in relief is flanked by Corinthian columns supporting a pediment containing a bearded figure, putti and obelisks above, inscription panel below.
Royal arms of William IV on the north wall of the nave.