If smoking is prohibited across the entire building and grounds, there should be zero or minimal costs associated with developing the policy and subsequent communication plans.
Good indoor air quality can lower operational costs while increasing occupant health and productivity as well as the value and marketability of the building.
Increased mechanical ventilation rates may increase energy costs for heating and cooling. Some strategies for mitigating these costs include energy recovery ventilation, economizers and controls, CO2 monitors, and demand-controlled ventilation.
Costs for testing will depend on how many air handling units and ventilation zones need testing, whether staff are qualified to do testing in-house, and whether the building has a BAS that gathers data.
A graywater collection system or other source of non-potable water may require a moderate investment unless a readily available source exists, such as a municipal water reclamation plant.