Elmhurst, Ill., expected to limit non-absorbing surfaces in new construction

Elmhurst, Ill., has begun gathering information likely to lead to some limits on the percentage of non-absorbing surfaces — including roofs, paved driveways, sidewalks, and other hard surfaces — in new construction.

August 28, 2013

Elmhurst, Ill., has begun gathering information likely to lead to some limits on the percentage of non-absorbing surfaces — including roofs, paved driveways, sidewalks, and other hard surfaces — in new construction. In a 2012 report, consultant Christopher B. Burke Engineering, Ltd., recommended that the city consider limiting such impervious surfaces in new construction to 50 percent of the lot area. Burke looked at 16 properties where an older home had been replaced by a newer structure and found that, on average, the footprint had nearly doubled, from a pre-construction average of 1,310 sf to a post-construction average of 2,505 sf, a 91 percent increase in impervious surface.

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