The Holy Trinity Parish included Sandgate, New Farm, Enoggera and Bowen Hills, and as St Johns was situated on the site of what is now Queens Gardens, parishioners had difficulty attending services as the Ann Street cutting had not been started.

By 1856, it was apparent that St Johns was not large enough for the growing parish, and a new church was established in a rented cottage at the corner of Ann and Ballow Streets, across from the Fortitude Valley Post Office.

Church wardens John Bramston, Henry Whyborn and the Attorney General of Queensland began a fund raising appeal.

Although he was employed as the Queensland Colonial Architect at the time, the Holy Trinity church was one of his many private projects.

[1] He also designed a number of other churches of both brick and stone that were of a similar style and scale to the Holy Trinity.

It was constructed without a chancel and with cement dressings by James Robinson, bricklayer and builder, at a cost of approximately £3000.

Samuel Watkin went to Maryborough to inspect the chancel of St Pauls Church of England which had also been designed by F.D.G.

The new chancel and sanctuary were dedicated on Sunday, 4 September 1921 by Archbishop St Clair Donaldson.

[1] Mr Addison was once again consulted when the rector received a cheque from a donor for the remodelling of the clerestory windows in 1925.

[1] Apart from a brick retaining wall that was erected in 1956 as a memorial to those who died in World War II, the grounds and buildings have remained relatively intact from this date.

It sits on a stone base and is mainly constructed of dark brick laid in the English bond method, with the window surrounds, string courses and copings finished in cement render.

[1] A pair of Gothic arched doors are centrally located in the symmetrically arranged south face of the building.

The transept gables have double doors located centrally between two small windows and have been bagged and painted to match the front face of the church.

Centrally located in the roof line above these windows are two ventilation gablets, one on either side of the transept gables.

This addition had been included in the original design for the church and it was always intended that it be built as the parish grew.

The rear face is dominated by a large grouped lancet stained glass window which sits above the reredos internally.

The walls to these rooms are lower than the rest of the building and are capped with a concrete parapet punctuated with a quatrefoil design.

Both the doors and the window are set into a Gothic arch similar in style to those in the original part of the building.

To the right of the entry doors is a semi-circular staircase leading to the gallery which houses seating and an early organ.

These are of complex section cast to resemble clustered pillars used in Early English churches and sit on octagonal rendered masonry bases.

They are linked by a cast iron framework decorated with a punched quatrefoil motif, forming pointed arched openings.

[1] Holy Trinity Church was listed on the Queensland Heritage Register on 21 October 1992 having satisfied the following criteria.

The building demonstrates the principal characteristics of a mid - Victorian interpretation of Early English Gothic architecture, and also an example of the ecclesiastical work of prominent Brisbane architect F.D.G.