The church stands on a mound near the south bank of the Wye, in parkland belonging to the Moccas Court estate. It is a three-celled, aisleless apsidal building. The walls are of calcareous tufa with some grey and red sandstone dressings. The church is a well-preserved and complete building of one date, with only a few later additions. The principal sculptural enrichments are the two doorways of the nave, in situ.

Liber Landavensis (c.1150) uses the name Mochros, locus porcorum, for in Welsh Mockros means moor for swine (Ekwall, 328). In DS the name used is Moches. In 1086 the land was divided between St Guthlac's Priory, Hereford and Nigel the Physician (medicus). That the place was of some importance is suggested by the remnants of an ancient stronghold, to this day called Moccas Castle (VCH, 1:254), but the stronghold is some three-quarters of a mile from the church, so the two sites are probably unrelated. The church was repaired in 1803 by Westmacott and restored by George Gilbert Scott Jun. in 1870.

Benefice of Cusop with Blakemere, Bredwardine with Brobury, Clifford, Dorstone, Hardwicke, Moccas and Preston-on-Wye.

It has been suggested (Zarnecki, 1950, 226-7) that there exists a close similarity between the scrolls on the Moccas tympana and that on the font at Bromyard (q.v.) and furthermore, that the doll-like figures, being devoured by the beasts on the tympanum of the S doorway bear a strong resemblance to a motif on a reused capital at Weston-under-Penyard. On this basis, all these works were assigned to the so-called 'Bromyard Group'. However, there is one serious objection to those arguments. The most distinctive motif of the 'Bromyard Group' is a Tree of Life with two crosses amongst its branches. This is found on five tympana of the group as well as on the Bromyard font but it is lacking at Moccas. The capitals used in the Bromyard Group are also very distinctive, quite different from those at Moccas.

RCHM (1:204) ascribed the Moccas doorways to an 'early to mid C12th date' and Zarnecki (1950, 227) to 'early in the second quarter of the 12thc.' while Gethyn-Jones (62) argued that Moccas is 'basically a late 11thc. church' and that the two doorways were inserted 'some time in the first half of the 12thc.' He believes that the repair of the tympanum of the N doorway resulted from the damage to the tympanum at the time of its insertion. This is difficult to accept. The repair is unweathered and dates, in all probability, to the 19thc.