The Act prevented the subdivision of land by speculators and developers into lots less than sixteen perches - one-tenth of an acre, approximately 400 square metres. As a result, most residential development in the older parts of cities such as Brisbane and Rockhampton consists of detached homes on rectangular lots, usually with a frontage of half a chain (approximately 10 metres) and a depth of two chains (approximately 40 metres). Frontages of 10 metres necessarily prevent the development of terrace houses, which was the predominant form of mass housing in other Australian cities such as Sydney, Melbourne and Newcastle. Many middle-class and wealthier land owners preferred to buy two adjoining 16 perch allotments and build a larger house straddling the two lots. One Member of the Legislative Council reportedly argued for a minimum lot size of 32 perches (approximately 800 square metres) during debate.
While the Act made Brisbane and other Queensland cities a more attractive and less overcrowded place to live and raise families and allowed each household to grow a garden, it did have its disadvantages, the main one being that the resulting low population density made it more expensive to provide urban services such as sewerage, paving and street lighting. As a result, Brisbane was the last major city in Australia to be comprehensively sewered, and unpaved laneways were common in the inner city until the 1960s. Nor was Brisbane spared the horror of slum development - suburbs such as West End and Red Hill were long known for their general poverty and low socio-economic status, even if they weren't as overcrowded as similarly impoverished districts in Sydney and Melbourne.
The Act was rescinded in 1923 and has been replaced several times by more up-to-date town planning legislation such as the current Integrated Planning Act 1997. However, Brisbane and other Queensland cities are still noted for their low population densities compared to those in other Australian states.