The total value of the construction, when required on permit applications and when used to determine fees, shall include the value of all material, labor, engineering and/or architectural fees, and the overhead and profit cost inherent in the contract, whether or not any such items are provided at no cost.
Exception: If a solar electric system or photovoltaic system is installed, construction costs shall not include the cost of any inverters or solar panels used in the installation of such system.