It is your choice.
If you want to remove the dangers of secondhand smoke, reduce property damage and fire danger, adopt a 100% smoke-free building or property policy. It is within your right as the property owner to make that change.
Creating a smoke-free policy.
Your lease or rental agreement should determine your responsibilities related to policy change, including but not limited to, how and when changes can be made during the rental term and timeline for notifying tenants.
You have support.
In addition to the Smoke-Free Housing Coalition of Maine, the U.S. Department of Housing & Urban Development (HUD) has stated creating smoke-free policies will reduce property damage, unit turnover costs, fire risk and improve the health of residents by reducing exposure to secondhand smoke.