Mr Armstrong explained that in the example of a house, money invested in its construction led directly to further spending on furnishings, architectural and landscape design and other household products.
Sageworks analyzed accounts receivable days for privately held companies in various construction-related industries, including those tied to early-stage work, such as architecturaldesign and foundation work, and those for drywall, flooring and other end-of-project tasks.
But freestanding islands weren't common in residential design until the post-War construction boom, says Sandy Isenstadt, University of Delaware professor of architectural history.