Quote:
Originally Posted by Klippenstein
So, in terms of urban math... my quick guesstimate is that you want, at minimum, an average of 1 household per 1,500 square feet of lot space to get a decent density. Many of these examples are more, but are in neighborhoods with lower density lots as well. So for example... for Minneapolis, it'd be 3 units per standard lot. For Chicago, that would be about 2 units per standard lot. And in Philly, 1 unit per row house lot (though many lots are smaller than 1500sqft). This is really rough estimate obviously, but what do you all think?
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it's a decent enough, and very general, rule of thumb to use, but the width & density of street ROWs also would have to figure into any more finer-grained look at the situation.
also, at the census tract level, the presence of a large non-residential land-use, can have a pretty big swing on population density. up in my immediate neighborhood, our tract has a density of 26K ppsm, but the tract immediately south of us is only 20K ppsm depsite the fact that the built density of the residential streets between the two CTs is essentially identical.
the main reason for the discprenacy? the presence of a large full-block elementary school in the tract south of us that takes away approximately 40 city lots, and therefore ~100 housing units. when we're talking about a CT that only has ~650 households to begin with, that becomes a significant ding.