The nave and chancel were built late in the twelfth century, although the south doorway is a Norman survival fram an earlier building. The north aisle was added during the thirteenth century and the north chapel added c. 1300. The tower is fifteenth century. The whole is built of ragstone and flint with dressings of Reigate stone. The church was restored in during the nineteenth century. In 1075 a church building existed in North Ockendon, attached to Westminster Abbey. At that time, according to the Regesta regum Anglo-Normannorum 1066 - 1154, it was said that "the judgment of fire and water was held there by ancient custom". This is probably the building which survives in the south doorway: but of the ancient custom, there is no record.