[1] Holy Trinity Parish Hall at Church Street, Fortitude Valley is a substantial brick building constructed in 1891–92 to the design of Brisbane architect JH Buckeridge.

[1] The Church of England was the first institutional religion established in Queensland, with the parish of St John's in Brisbane created in 1849 as part of the Diocese of Newcastle.

The new parish encompassed the areas of Fortitude Valley, Bowen Hills and New Farm and extended west to Enoggera and north to Sandgate.

At first a cottage was rented at the corner of Ann and Ballow Streets for use as a Church of England school on weekdays and as a place of worship on Sundays.

At this time St John's Church was designated as the pro-Cathedral, and Holy Trinity parish was incorporated into the Diocese of Brisbane.

The 1857 stone building was enlarged in 1862 to accommodate an expanding congregation and by the mid-1870s Holy Trinity parish was committed to the construction of a new, larger church on the Brookes Street site.

Designed in 1875 by the then Queensland Colonial Architect, Francis Drummond Greville Stanley, the second Holy Trinity church was erected in 1876-1877 by contractor James Robinson.

It was opened formally as the Holy Trinity Sunday School by the Governor of Queensland, Sir Henry Wylie Norman, on 23 January 1892.

It is a plain but well-resolved design, incorporating motifs common to Gothic-styled ecclesiastical building in the cruciform plan, spire (roof ventilator), lancet windows and joinery detailing.

Windows are simple lancets and door openings have flat stone lintels with corbelled shoulders or pointed arches of cream brick.

[1] Above the main entrance door is another plaque with the inscription: Trinity Sunday School opened by His Excellency Sir Henry Wylie Norman KGB, GCMG January 23rd 1892.

[1] A small front grassed yard to Church Street has some plantings and a low brick retaining wall along the road alignment.

It is a substantial school room-cum-hall utilising Gothic stylistic elements popular in ecclesiastical buildings of the period, including the cruciform plan, ridge ventilator in the form of a small spire, lancet windows and joinery detailing.

The building is a good example of the ecclesiastical work of Brisbane Diocesan architect JH Buckeridge and has aesthetic significance generated by its design, materials and garden setting.

This group is important in demonstrating the principal characteristics of its class: a substantially intact, cohesive, late 19th century Queensland ecclesiastical precinct.

The building is a good example of the ecclesiastical work of Brisbane Diocesan architect JH Buckeridge and has aesthetic significance generated by its design, materials and garden setting.