Despite being one of the national priorities, there are still large gaps and no consensus from the literature on what drives house price growth and the interaction between major drivers that underpin house price growth. In our housing affordability knowledge hub, we provide:

• an independent review of the factors of house price growth (HPG) in New Zealand
• a range of descriptive statistics of the HPG and its drivers over the last fifty years.

Our review includes both the academic and grey literature. We provide a list of suggested future studies to improve our understanding of the factors of HPG in New Zealand.

Cite this article.

Principal Economics. (2021). Drivers of House Price Growth Knowledge Hub. Retrieved from Drivers of House Price Growth – Principal Economics.

Transportation decisions can have large and varied impacts on travellers and their communities. It’s important to measure these effects and consider their impact on various groups when planning projects.

Waka Kotahi uses a framework to decide which transport projects and programmes to pursue. The economic business case must contain a cost–benefit analysis (CBA). CBAs assess the economics of a proposal by valuing (monetising) the costs and benefits to all members of society. However, CBAs sum across a wide range of people and don’t calculate inequities between groups or individuals, or who ultimately benefits from the project.

Transport equity discussions focus on social justice. Equity impact analysis helps policymakers to make good decisions for a wide range of people. Distributional impact analysis needs to be complemented with wider investment and planning considerations. This includes any comprehensive policy framework that accounts for the overlapping effects of transport, housing and taxing policies.

Cite this article

Torshizian, E., Byett, A., Isack, E., Fehling, A., & Maralani M. (2022). Incorporating distributional impacts in the cost–benefit appraisal framework (Waka Kotahi NZ Transport Agency research report 700).

Our report examines the expected costs and benefits of the reforms. Changes are currently articulated mainly as broad principles and high-level descriptions of the institutional arrangements. Much of the detail is still to be developed, and the benefits of the reforms will depend on the physical outcomes that result, eg how much will pollutant emissions reduce, housing affordability improve, or Māori engagement increase?

The report focuses on understanding the nature of costs and benefits under the different domains and how these are expected to change at the margin, eg whether increased environmental quality will yield positive net benefits. We provide an indication of the potential for benefits in different domains. The realisation of these potential benefits is dependent on the final design and implementation of the reforms.

Dunedin City Council appointed Principal Economics to provide a comprehensive assessment of the sufficiency in development capacity of business land within Dunedin to fulfils requirements of the the National Policy Statement on Urban Development (NPS-UD 2020), including an investigation of:

• the locational requirements of business including shape, size, access, reverse sensitivities, and other market factors;
• the external pressures businesses are facing (such as the uncertainty of the COVID-19 pandemic, and the impact of coastal hazards);
• impacts on business activities from reverse sensitivities; Locational accessibility to labour markets and customers; Changes in demand from population growth; changes in residential distribution;
• infrastructure requirements for different business sectors.

In our assessment of demand and sufficiency we identified existing businesses across New Zealand and their locational attributes including but not limited to land size, shape, access, reverse sensitivities and other market-based factors. We use industries’ revealed preferences to assess the features of land that they have determined as being suitable. This was then matched with the supply of business land in Dunedin City after applying a range of spatial analysis techniques.