Research Shows Costs of Building at the Edges

America's long-running habit of building ever outward could be setting up cities for higher taxes and shakier budgets, Vox reports. In a new piece for the site's Future Perfect section, Marina Bolotnikova looks at research from the Pew Charitable Trusts, the World Resources Institute, and ECOnorthwest that models how much it costs to add homes in already built-up areas versus pushing new development to the fringe. The punchline: Homes added near existing jobs, shops, and transit need about $21,000 less in upfront infrastructure per unit on average, and their ongoing maintenance costs come in roughly 50% lower—while generating about 13% more property tax per acre.

Bolotnikova notes that US policy still heavily favors low-density sprawl, even as aging infrastructure, high interest rates, and tax backlash put local finances under pressure. Places like Memphis, she writes, are now grappling with the bill for decades of outward growth and trying to pivot to "infill" instead. The deeper case for that shift, she argues, isn't just about budgets. For starters, Bolotnikova writes, "Building on top of or in between existing development reduces the toll on the environment and wildlife, minimizes commute times, and better supports compact, walkable, livable communities." For the full analysis and data, read the original article at Vox here.