A residential builder must be conscious of two categories of environmental responsibility: How the building interacts with the environment, and how the building interacts with the people who live there.

Lofts on Lex addresses the environmental impact of the building by using energy-efficient heating and cooling systems, double-paned windows, and fluorescent lighting to reduce overall energy consumption, dual-flush toilets to reduce water consumption, and recycled and reclaimed materials to reduce waste involved in manufacturing and shipping.

How the building interacts with its residents is also important. Research shows that standard building materials can produce pollution significantly higher than the outside. Lofts on Lex addresses this by using low-VOC primer, low-VOC paint and low-VOC floor finish wherever possible to lower indoor air pollution.