Additions in the 14th century included stone effigies representing a knight and his wife, considered to be excellent examples of such sculptures.

More structural changes took place at regular intervals, and a major Victorian restoration by architect Somers Clarke included an extension to the nave and a new tower.

The ancient parish of Ifield covered about 4,000 acres (1,600 ha) of rural land in the north of Sussex, up to the border with Surrey.

[10] A century later, a timber porch was built on the north side,[11] the chancel arch was widened and a rood screen was installed, a standard feature of churches in the medieval era, as were wall decorations and paintings.

Ecclesiastical feeling moved in favour of austere, whitewashed walls, screens and pillars by the 17th century, and Parliament decreed these changes in the 1640s.

The vicar of Ifield, Reverend Robert Goddin, was a strict Protestant who was strongly opposed to Catholic-style worship, ceremony and church decoration, and he enforced the new style rigorously.

[4] In 1847, the roof was improved and a vestry was built, incorporating wood from one of Crawley's famous old trees, the "County Oak", which had been cut down at that time.

[19] Between 1883 and 1884, architect and archaeologist Somers Clarke and fellow architect J. T. Micklethwaite[4] built a tall, substantial tower at the west end[17] to replace an earlier small tower over the porch (which had itself replaced the much older bell turret); lengthened the nave; and removed a gallery at the west end of the church.

The aisles and their arcades are largely unaltered from their 14th-century origins:[16][20] between them they feature various mouldings and designs typical of that period, including chamfered arches, octagonal columns and squinch corners.

[4][16][20] Architectural historian Nikolaus Pevsner considered the tower to be "perplexing", but described its windows and double internal arch as "odd and very effective details".

Made of local marble, it has an intricately carved stem flanked by four columns topped with delicate leaf-like capitals and roll mouldings,[4][20] ornamentation uncommon on a Norman-era font.

[9][11] At the east end of the nave are two large 14th-century stone effigies, survivors of the 17th-century upheaval and all subsequent changes to the church, and now considered to be "high quality" examples of their kind.

[15][22] A large table tomb at the west end of the churchyard is listed separately by English Heritage as a Grade II-listed structure.

The structure is of pale (but heavily weathered) stone, including a two-step plinth, with various inscriptions on the sides, topped with a carved urn decorated with putti.

[16] George Hutchinson has a prominent wall memorial in the chancel in addition to his tomb outside; local sculptor Richard Joanes designed it, and there are Coade stone embellishments.

Beyond the edge of the Ifield West estate, the boundary extends to Faygate and the farms and rural roads around that hamlet.