Living buildings cost up to 49% more to construct than traditional structures, depending on type and location, but their efficiencies pay for the higher price within 15 years, according to a study commissioned by the Cascadia Green Building Council. The availability of financial incentives and the cost of water and energy influence how long it takes to recover the premium for a living building, the study noted. Mild climates with regular rainfall provide the most cost-effective environments for green buildings, experts say.

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