Visit the Gig Harbor Business License Information Page. You will be instructed how to apply online or by mail. You will receive faster service when you apply online and will generally have your Business License within approximately two weeks. Questions about the Business License Application form or the City of Gig Harbor Endorsement Addendum form should be directed to the Department of Revenue at 360-705-6741. You will receive one Business License from the State showing both your city and state business licenses. Please note that your license is subject to City approval, in particular, zoning approval by the City’s Planning department for businesses physically located within city limits.