

This is an important chart from a recent study commissioned by Greater Wellington, New Zealand. The study looks at the cost benefits of urban intensification and the above chart shows the relationship been density and infrastructure costs. For this study, they specifically looked at the costs that local governments face in providing road, public bus transport, and "three-waters infrastructure." I hadn't heard this latter term before, but it refers to drinking water, wastewater, and stormwater.
What they obviously found was that there are real economies to higher densities. More density lowers the per dwelling cost of delivering infrastructure. In the case of three-waters infrastructure, it doesn't even really matter if you're proximate to reservoirs or treatment plants. The bulk of the cost lies in the local connection pipes. So what matters most is how many dwellings you can service off of the main lines -- even if these lines need to be upsized.
I am so tired of sensational headlines:
The Ontario Line will zip across the core and up to Eglinton, easing gridlock and alleviating TTC misery. It will also plow through peaceful Toronto neighbourhoods, displacing homes, businesses and everything in its path.
I know exactly what business model it is serving and why it is done, but I'll ask the question anyway: Why do we need to make everything out to be a problem?
In this case, we're talking about a new and important piece of city building infrastructure. A subway line that will run through the densest parts of this country and alleviate congestion at key interchanges, as well as broadly across the city.
It is something that we, as a city, have been griping about for many decades. And now, it is finally happening! Will it involve constructing things? Yes. Will it actually displace "everything in its path?" No.
But as we all know, this is the way media works today. They set the agenda (i.e. tell us what we should be terrified and/or pissed off about) and then they sell our attention. And an effective way to do that is to make sure that the headlines get us really worked up.
