Building permits provide a means for the code official to protect the public from unsafe and unsanitary conditions resulting from substandard construction. Not only does this maintain the value of your properties, but also all others within the community.
Building codes contain minimum standards of construction which have been developed over many years. Each requirement exists to prevent unsafe, unsanitary or deteriorating conditions in buildings.
In short, the Building Department exists as a service to owners and occupants in the City.