Not all events in Sunnyside require a permit. The criteria to trigger a special event permit is that it is conducted on public property, or on a public right of way, or is held on private property that has a direct significant impact on traffic congestion or traffic flow to and from the event over public streets or right-of-way, or substantially impacts public streets or right-of-way near the event, or significantly impacts the need for emergency services such as police, fire or medical aid, or is in the city’s Commercial and Business Zones, and involves the sales of tickets for attendance or is open to the general public with attendance expected to exceed more than 50 people.