6 is a heritage-listed former quarry with electrical substation at 356 Lutwyche Road, Windsor in the City of Brisbane, Queensland, Australia.

The local tuff provided an excellent source of building material for the new Shire and districts beyond and was worked by both private enterprise and the town council.

In 1897, the Windsor Town Council Chambers was constructed from the stone, as were a number of local buildings, roadside kerbing and drains.

[1] In 1904 Windsor became a municipality comprising Albion, Wooloowin, Wilston, Lutwyche, Newmarket, Swan Hill and part of Eagle Junction and Kedron.

The quarry face that remains today displays an unconformity between the metamorphic Neranleigh-Fernvale beds of rock and the Brisbane tuff seam and is a striking feature of the park.

[1] The former Brisbane City Council Tramways Substation no 6 was operational between 1927 and 1948 and is situated adjacent to an open parkland area created from a former quarry at Windsor.

Early development in the industry was in the hands of a number of private companies and the situation was complex because the metropolitan area comprised fourteen separate local authorities.

Two engine sets from Countess Street were transferred to a building in Logan Road to provide a feeding point for the system on the south side of the river.

At the conclusion of the First World War there was general support for the notion that the tramway system should be owned and operated by a public authority.

Three small obsolete power stations generated energy for trams and electricity for Ithaca and Toowong and the supply for all other suburbs was purchased in bulk from CEL under 10 year agreements.

In 1926 the Council, anxious to control the city's electricity supply, decided to build its own powerhouse at New Farm, under the supervision of the BCC Tramways Department.

[1] Prior to 1940, their design was the responsibility of BCC Tramways Department architect and construction engineer, Roy Rusden Ogg.

In conjunction with the tramway's chief engineers Nelson and Arundell, he designed 10 Brisbane substations between 1926 and 1936 and the first two stages of the New Farm powerhouse.

Although they were robust utility buildings, generally small in scale, elegant proportions and such details as finely crafted brickwork distinguished them.

13 which was designed by Frank Gibson Costello and became operational in June 1949, and appears to also be within the Windsor Town Quarry Park, but is on separate lot, which is an electricity reserve managed by Energex.

6 and Windsor Town Quarry Park occupy an irregular block that is part of an island of land, bounded by Goodacre and Flaherty Streets and Lutwyche Road, that also contains the former Windsor Shire Council Chambers, the Hawkins Street road reserve and a former Energex substation on separate lots.

It is a two-storey building of austere appearance, symmetrical in form, and has load-bearing walls of red glazed bricks set on a concrete plinth.

The front of the building is divided into bays by brick pilasters and has a decorative cornice of moulded render with small square openings set below wide eaves.

The exposed face of the former quarry, now the main feature of the park between the substation and Windsor Shire Council Chambers, is evidence for the former industrial use of the site as a source of stone for buildings and road construction.

[1] As a well-conceived utility structure, the substation is important as a fine example of the municipal work of tramways architect Roy Rusden Ogg.

As the substation and the adjoining park with its landmark quarry cliff are prominently sited on a major road, they make an important contribution to the visual character of the area.

As a well-conceived utility structure, the substation is important as a fine example of the municipal work of tramways architect Roy Rusden Ogg.