St. Louis County officials may soon approve controversial new construction standards that lower environmental requirements for new residential buildings. The proposed ordinance retracts energy efficiency measures from the 2015 International Energy Conservation Code (IECC) that would require new homes to reduce air infiltration, install more energy efficient lights, and add more increased wall and ceiling insulation. The Home Builders Association of St. Louis and Eastern Missouri recommended eliminating those requirements, arguing that the 2015 code's energy efficiency standards would cost county homebuyers between $32,420 and $42,345 more than measures required by the existing code.
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