Decreased Travelling times-Resulting in energy savings and reduced space or consumption.
Better air quality-Reduces the amount of air pollution as there will be more public transport travelers.
Reduce pressure on land-Increasing densities within the existing urban fabric, this move reduces the developmental pressure to build on the fringes, yet accommodating for the rising population.
Lower infrastructure costs-Assists in the reduction of capital expenditure costs on urban infrastructure by efficiently making use of the existing infrastructure.
Lower housing costs-Able to meet the needs of the housing affordability crisis in Sydney, maintaining social diversity and essential services in its communities.
Greater Housing Choice-Suburban growth being dominated by detached housing, mainly suitable for family households, provides more options in terms of housing choice as well as availability for rental.
Beneficial for climate change-The claim that compact cities use less fossil fuel, emit less greenhouse gases as well as conserving agricultural and water catchments.
Disadvantages
Increased traffic congestion-As densities increase, so do the total vehicle hours per square kilometer of the city.Urban
consolidation can replace land that could have potentially been a road reducing the congestion of a car park.
Increased pollution-As a result of traffic congestion, pollution levels will increase. This will negatively affect peoples' health and well being.
Adversely affects health-A study of 4 million people in Sweden found the rates of psychosis were 70% greater for denser areas and within that there was 16% more chance for the development of depression.
Pollutes storm water systems-Due to the greater degree of hard surfaces from increased density developments, rather than the absorption by a natural ground surface.
Decimates urban bush land-Value of our natural flora and fauna diminishes, as well as involuntarily disallowing the owning of a vegetable garden.
Increased pressure on existing infrastructure-Increasing density strains existing infrastructure and postpones expenditure.
Increases housing cost-As the government is restricting development on the urban fringes of Sydney makes land scarce, existing land becomes more valuable raising its worth.
Induces climate change-There is more energy produced when constructing multi-unit buildings.