Most fundamentally, it is simplistically using some accepted job and residential density threshold targets that are quite well accepted by transit authorities that will determine the type of infrastructure investment.
One of the things that's happening right now, in contrast to the astute observations by His Worship Mayor Savage, is many of our transit investments are not in those existing built-up areas. We're facilitating longer driving and more congestion by going into greenfield areas. We ultimately have to intensify. This is something that addresses quality of life in a huge way.
We have a housing stock that completely doesn't match our demographic reality in this country, where more than half of our houses are single family homes. Today, more than two-thirds of households have only one or two people, and by 2025 we'll have more one person households than any other type of household, and that's going to continue to grow. A lot of those people are living in single family houses. We need to provide a bunch of housing choices on the housing continuum, from high-rise to row houses, townhouses, multiplexes, right down to the single family home. That is something we have to help municipal governments do.
There's a ball of wax of policies that have inadvertently been encouraging local governments to do the wrong things. It's cheaper to do greenfield development in a farmer's field than it is to intensify because you have to rip up infrastructure and lay it again. But it's through those intensification projects that you generate the revenue necessary to operate, maintain, and replace that infrastructure. The best asset management regime in the country is actually from the Minister of Infrastructure and Communities' riding in the city of Edmonton. Every neighbourhood has to undergo an analysis of revenue streams on a life-cycle basis and expenditures. Out of more than 20 neighbourhoods that I've studied, only two have enough revenue to build, operate, maintain, and replace that infrastructure. The other 18 are going to be, ultimately, an albatross hanging around the neck of the municipality on a long-term basis because of policies we've inadvertently developed.
Thank you.