Queenslander architecture is a modern term for a type of residential housing, widespread in Queensland, Australia.^[1] It is also found in the northern parts of the adjacent state of New South Wales, and shares many traits with architecture in other states of Australia, but is distinct and unique. The form of the typical Queenslander-style residence distinguishes Brisbane's suburbs from other capital cities. The Queenslander is considered Australia's most iconic architectural style.^[2]

This style developed in the 1840s and is still constructed today, displaying an evolution of local style. The term is primarily applied to residential construction, although some commercial and other types of construction are identified as Queenslander.

The quintessential Queenslander is a single detached house made of timber with a corrugated iron roof located on a separate block of land.^[1] They are all high-set, single-storey dwellings with a characteristic veranda that extends around the house to varying extents but never entirely surrounds it. In later years, many have been renovated to enclose part or all of these verandas to create extra bedrooms. The under-house area is often also enclosed to provide extra living area to these houses, which leads to the common misconception that an authentic Queenslander has two storeys.

The term has evolved to apply to many different types of structures found in Queensland, such as churches. The many and varied styles all share similar features, such as prominent exterior staircases, gabled roofs, and the defining trait of being built on stumps, raising the structure from the traditional 2.8 m and varying in height depending on terrain.

They are typically "tripartite" in sectional composition: underfloor (stumps), primary rooms (can be two levels), and roof. All have one or more veranda spaces, a sheltered edge of the building that is typically only partly enclosed and used as another living zone. This consideration for climate is the defining characteristic of the Queenslander type.

The raising of the main living spaces off the ground can be seen as both a stylistic and practical device. The vertical "stumps", initially of timber, allow the building to "float" above the terrain. Queenslanders all have this underfloor area that is used to cool the building through ventilation and also for protection of the main structure from termite and other pest attacks. The stumps also help to overcome any variations in the terrain that would normally require earthworks to flatten for construction and allow for the natural flow of water across the terrain in the event of excessive rain and downpours.^[3] The underfloor space is often high enough for additional uses such as storage, a carport, or even as extra living area in the cool, dark spaces beneath the building. The underfloor area was sometimes decoratively screened at the perimeter with timber battens. Another advantage of being constructed on stumps is that the buildings are highly adaptive. Raising, lowering, reorienting, or completely relocating Queenslanders is relatively easy.^[4]

The main living areas of the house, being raised from the terrain, are a series of rooms on a platform floor. Traditionally, planning and fenestration encouraged cross-ventilation for passive cooling in a variety of innovative methods, including fanlights, ceiling roses, and alignment of doors and windows to allow uninterrupted air flow. The veranda is the most typical inclusion in the plan, and can be used day and night as a semiexternal living space. In Brisbane, many people have tables and chairs for dining and a daybed or sleepout on their verandas.^[5] Whirly birds placed on roofs allow for hot air to be drawn out of ceiling spaces.^[6]

The roof is a large and visible presence externally, and was traditionally steeply pitched. They are of varied materials, including slate and tiles, but are most characteristically sheeted with corrugated steel. The steel roofs could withstand torrential rains and be reused if damaged by cyclonic winds.^[6]

Typically, the Queenslander is suited to the subtropical climate of Queensland of high rainfall and mild to hot, humid climate with average summer temperatures in the range of 23–36 °C (73–97 °F). However, the type is found across the state in both colder and hotter locations, usually with adaptations to suit.

With timber plentiful and the preferred building material in Queensland after 1900, a new product emerged to fill the need for housing stock – “Ready to Erect” homes provided by timber merchants with all of the pieces already pre-cut and readily available for ordering.  The homes were cheaper than the other options for home building - either working with an established builder or employing an architect. However, it would appear that “ready to erect” houses (or mill cut houses) were more suitable to the Queensland house than those constructed in other Australian states or climates.  The companies that offered this product in Brisbane were primarily Brown and Broad of Newstead and Campbell Brothers of Creek Street Brisbane. Brown and Broad began the “ready to erect” home building phase, with their products announced in 1915. The motto of the company was “Houses built in half the time.”  However, their catalogues also emphasized reliability and quality, and the fact that their tradesman were all expert in their own trade.  By 1922, the ready to build homes had spread to northern New South Wales, with an indication that this “ready to build” product may be a “Queensland phenomenon.”  There were some other timber companies in Queensland that had also adopted the concept of ready to build homes.^[7]

Owing to their simplicity of construction, standardised designs were produced through the 1920s and 1930s. Despite these advantages, tastes changed and the style fell out of favour after the Second World War. The need for cheaper homes first had large verandas reduced to small landings. Subsequently, internal walls were no longer made of timber and were made of fibreboards, such as asbestos sheeting or fibre/gypsum panels. Additionally, after the war, surplus military earthmoving equipment became common and preparing sites for construction was then possible and the relative cheapness of construction on stumps diminished.^[8] Land availability decreased and preferences moved towards lower-maintenance types of housing.^[8] These factors led to the adoption in Queensland, as elsewhere, of the ubiquitous "modern" American style, usually a single level and usually sold as a combined land and home package. These newer homes are usually made with a timber or metal frame, but with a brick veneer.

The Queenslander, a "type" rather than a "style", is defined primarily by architectural characteristics of climate-consideration. They have been constructed in the popular styles of the time, including Colonial, Victorian, Federation, Arts and Crafts/Art Nouveau, Interwar styles, and post-World War II styles. The Queenslander is popularly thought of as an "old" house, although Queenslanders are constructed today using modern styles, as well as "reproductions" of previous styles.

Highrise

This section does not cite any sources. (May 2022)

Certain elements of Queenslander house architecture can be found in some highrise buildings. Early highrise buildings had narrow balconies that were mostly used for cleaning the outside of windows. In Queensland, highrise balconies gradually evolved to become wide outdoor living spaces of the quality of verandas and the back decks of Queenslander houses and other old houses. Queensland's highrise buildings are finding new ways to hover above the landscape creating lush shaded undercrofts that extend public amenity, mature planting, habitat and flowpaths, shade, pools, gardens, decks, boardwalks and amenity connecting streets to waterfront through and under the highrise. Building supports give vertical elements to mimic rainforest trees in supporting ferns and vines that bring coolness to shaded undercrofts. Extending public access under high-rise is an opportunity to give the community visual and or pedestrian access back to waterfronts as the density rises in their neighbourhood. Queenslander highrise practice gives architects ways to blend and celebrate undercrofts with lace and balustrade detailing.

As white ant (termites) pose a serious problem in Queensland to timber dwellings, Queenslander buildings have stump caps (also known as ant caps). These are metal plates placed on top of each stump shaped to make it difficult for white ants to reach the main part of the building. However, accumulations of dirt or ants' nests can enable the caps to be traversed by the white ants, so regular inspections are needed to ensure the stump caps are in good condition and for early detection of white ant entry to the main structure.^[11][12]

Not being built of stone or brick, Queenslander architecture cannot have a foundation stone. However, the desire for the traditional ceremony of laying a foundation stone, particularly for churches and other community buildings, evolved a new tradition in Queenslander buildings of a stump-capping ceremony, where an ant cap was ceremonially affixed to one or more stumps.^[13][14] Since an ant cap cannot have a commemorative message (unlike a foundation stone), sometimes a plaque or other method of commemoration was subsequently added to the building to record the occasion for posterity, but mostly such stump-capping ceremonies left no permanent commemoration.

• Architecture of Australia
• Australian residential architectural styles
• Bahay na Bato, an architectural style that evolved for the tropics in the Philippines
• List of architectural styles
• List of house styles
• List of Queensland's Q150 Icons