It was designed by George Sydney Jones & Harry Thompson and built from 1889 to 1890 by Thomas Hanley of Balmain.

However, two of the secessionists were wealthy men, Dr Philip Sydney Jones and the tobacco merchant George Todman, who could not agree on a site for a new church, so they built one each.

Sir Phillip's younger brother, George, and brother-in-law, Harry Thomson, were the joint architects.

[1] Gifts given to the church included a set of pulpit robes and communion plate given by the ladies of the congregation.

The Norman and Beard (London) organ given by the Thompson family (J D & H D) bought in England during a visit there by JD in 1909.

The church is oriented east-west, with the main entry at the western end through an attached porch (exonarthex).

The spire is octagonal, of timber construction, with louvred vents and clad in sheet metal (copper or zinc).

The dado to the sanctuary and the south transept has velvet curtains hanging in front of white lime washed brickwork.

The structure of the spire is supported by the four roof trusses over the crossing, and is open through the ceiling for light and ventilation.

Generally, the building is of polychrome brickwork, red with blond trim, with a terra cotta Marseilles pattern tiled roof, hipped in form with skillion additions.

[1] As at 30 May 2003, Trinity Uniting Church constructed in 1889 is an exceptionally fine and intact example of Victorian Romanesque design, with excellent polychrome brickwork detailing, both externally and internally.

Sir Phillip's younger brother, George, and brother-in-law, Harry P Thomson, were the joint architects.

[1][2] Trinity Uniting Church was listed on the New South Wales State Heritage Register on 19 September 2003 having satisfied the following criteria.

[1] The place is important in demonstrating the course, or pattern, of cultural or natural history in New South Wales.

Sir Phillip's younger brother, George, and brother-in-law, Harry P Thomson, were the joint architects.

[1] The place is important in demonstrating aesthetic characteristics and/or a high degree of creative or technical achievement in New South Wales.

The church is an exceptionally fine and intact example of Victorian Romanesque design, with excellent polychrome brickwork detailing, both externally and internally.

[1] The place possesses uncommon, rare or endangered aspects of the cultural or natural history of New South Wales.

[1] The place is important in demonstrating the principal characteristics of a class of cultural or natural places/environments in New South Wales.

[1] This Wikipedia article was originally based on Trinity Uniting Church, entry number 01671 in the New South Wales State Heritage Register published by the State of New South Wales (Department of Planning and Environment) 2018 under CC-BY 4.0 licence, accessed on 2 June 2018.