Urban Land Dashboard

Urban Land efficiency indicators

Price to cost ratio (PCR)

The PCR shows the ratio of house sale prices to construction costs for houses built and sold over the past five years. When house prices rise faster than construction costs, the PCR increases, signalling an increase in residential land values. The detail on calculation is in the technical notes.

Aim: A declining PCR trend if land supply has been constricted otherwise a relatively stable PCR 

Examining long-term trends in the PCR helps identify whether changes reflect structural or cyclical issues in the land and housing market, such as policy changes, economic conditions, regional factors, or a lack of responsive housing supply. PCRs will always respond to increased demand driven by population growth, interest rate declines, or improved local amenities. Short-term price increases driven by demand shocks are cyclical when supply can respond. Where supply is constrained and unable to adjust, the ratio will trend upwards over time reflecting structural issues.

Examining differences in PCR by typology over time provides further information on what types of demand may be constrained. PCRs by typologies can be found in the data download.

Other indicators in the dashboard along with local knowledge help distinguish whether demand pressures are driven by population growth, access to finance (for example, due to lower interest rates), or regulatory and regional influences. Understanding the drivers of demand will support councils in their planning.

It’s also important to assess whether changes in the PCR are driven by movements in house prices or construction costs. A declining PCR caused by rising construction costs, rather than falling house prices, reflects inflating construction costs rather than improved urban land market responsiveness.

Rural urban differential (RUD)

The RUD measures the difference in land value up to 1km outside the rural-urban land zoning inferred boundary (for Auckland and Christchurch it’s 2km[1]) compared with land up to 1 or 2km inside the rural-urban land zoning inferred boundary. This is after accounting for the impact of distance to centre, distance to water, average slope, median income nearby and development cost. Higher values indicate an unmet demand for urban land and that demand could be residential or commercial. The detail on estimation is in the technical notes.

Aim: A declining RUD trend if land supply has been constricted otherwise a relatively stable and low RUD 

An increase in demand for urban land for residential or commercial use may be driven by population growth, investment activity, lower interest rates or improvements in local amenities, puts an upward pressure on urban land prices. If demand for neighbouring rural land remains unchanged or declines, the price gap between urban and rural land will widen if rising demand is not matched by sufficient access to developable urban land in cities generally, through either intensification or urban expansion. Constraints on the supply of developable land may arise from limited infrastructure capacity, a lack of land suitable for development, regulatory barriers or a combination of these factors.

Monitoring the rural urban differential (RUD) over time, alongside local knowledge and contextual indicators such as population growth, interest rates and rental affordability, helps determine whether changes in RUD reflect structural constraints on land supply, lagged supply responses, or broader economic or policy factors.

In some cases, demand for rural land may exceed demand for urban land due to strong agricultural profitability, resulting in a lower RUD. In such situations, it remains important to assess other housing and land market indicators to determine whether housing demand is being adequately met.

[1] (Auckland and Christchurch are bigger cities hence up to 2km is considered as a fringe for RUD calculation. Whereas small cities, or cities like Wellington (stretched out north-south), "2km from the boundary" will include areas in RUD calculation that may be very close to central areas therefore 1km mark is used)

Context indicators

Mortgage interest rates

Mortgage interest rates influence house prices by affecting the cost of borrowing. In a responsive system reduced interest rates should have an indirect impact on rent prices over time by reducing the cost of new supply and increasing supply relative to demand, lowering rents.  

Increase in mortgage interest rates

Makes home buying less affordable and can reduce demand for buying homes, while also making property investment less profitable, generally cooling the housing market. This increase in interest rates may reduce the rural urban differential (RUD) and the price to cost ratio (PCR). In this case, falling house prices and related efficiency indicators doesn’t mean supply has improved—it may just mean demand weakened while structural supply issues remain unchanged. Analysing rental price index and rental affordability index in conjunction would reflect if the demand for housing due to population changes is still being met.

Decrease in mortgage interest rates

Lowers borrowing costs, improves mortgage serviceability and potentially increase demand for buying homes and make investment in the housing market more profitable. This increase in demand puts upward pressure on house prices. This would be reflected in PCRs and RUD increases. In a responsive system, supply should respond to these price signals, with PCRs and RUDs stabilising and beginning to decline over time, even if interest rates remain low.

Population growth

While population growth influences housing demand, it is not the only driver. Investment motives also play a significant role. Demand is also shaped by shifts in demographics and household formation, as people may choose to live together or form separate households, affecting the overall number of dwellings required. Population growth can also be driven by inflows of international migration.

Increase in population

Higher population growth, whether from internal or international migration, birth rates or new household formation, raises housing demand and can put upward pressure on rents and house prices. In a responsive market this is followed by an increase in supply to satisfy demand.

Decrease or slower growth

Slower population growth or population decline reduces housing demand, which can ease pressure on rents and house prices.

Building consents per 1000 residents

This indicator measures the number of building consents issued relative to the population, reflecting intentions to build. While not all consents result in completed builds, it provides insight into potential housing supply.

Increase in per capita consents

A rise in consents per capita suggests a likely increase in construction activity, indicating that housing supply is responding to demand that could be driven by any factors.

Decrease in per capita consents

A decline in consents per capita indicates reduced building activity and may be driven by one or a combination of factors, including: urban land supply constraints (for intensification or expansion), regulatory or policy constraints, or weakening demand (due to a housing market slowdown, reduced population or economic growth etc).

Rental price index (RPI)

Measures the quality adjusted average change in rents of new tenancies. It reflects responses to both wage growth and changes in rental demand. It also signals the balance between housing supply and demand caused by population changes.

Increase in RPI

A rise in rental prices can result from higher wages, increased demand for rentals or a combination of both. It often serves as one of the first indicators to respond to changes in housing demand driven by population growth. Sustained increases may also suggest that housing supply is not keeping pace with demand driven by population increases.

Decrease in RPI

A decline in rental prices may indicate reduced rental demand, slower wage growth, or an increase in available housing stock.

Rental affordability Indicator

Compares changes in rental prices for new tenancies with growth in median household disposable (after-tax) income. It signals whether the rental market is becoming more or less affordable.

Improving rental affordability

When rental prices grow more slowly than household incomes it suggests that rental housing supply is better meeting demand.

Declining rental affordability

When rental prices grow faster than household incomes, it indicates unmet demand for rentals, suggesting that housing supply is not keeping pace with demand driven by population increase or new household formations.

Snapshot of housing demand and supply dynamics