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However, at the end of the 10 years, the home owner sells the house and recoups some of the initial additional investment costs. Depending on the residual value estimation approach, the present value net cost savings in life-cycle costs to the homeowner is either $41 714 or $84 997.
The life-cycle cost analysis is not simple for the homeowner to understand. The net zero energy design is approximately 33 % ($162 687) more expensive to construct than the 2012 IECC design due to its complex construction design (additional insulation, tighter air leakage control, HRV system, solar systems, etc.).