​Block Parties

Neighborhood Block Party

Hosting a party or activity with your neighbors is great way to connect with or say "thank you" to those people who watch your house while you are away, lend a helping hand when you are missing a tool to finish the project, or provide great recommendations for home repair experts. It's also fun! Knowing your neighbor on a first-name basis is an effective first, and repeated, step toward a strong neighborhood.

National Days to Celebrate with your Neighbors

National Night Out is celebrated on the first Tuesday in August. This yearly event is a way to meet the police and firefighters in your community and promote neighborhood unity against crime. For more information or to register your event for a visit by police or fire staff, contact Officer Matt Barnes at 720-977-5024.

National Good Neighbor Day is observed annually on September 28. This day celebrates the importance of being a good neighbor.


If your neighborhood plans to host a block party and wants to close a street and have alcohol on the street and sidewalk, you will need to apply for permits from the City.

Step 1: Closing a residential street within a subdivision requires a traffic control permit.  Arterial and collector streets are not permitted to be closed for block parties. There is no cost for this permit. Permits must be submitted at least five days prior to the event and all affected residents must be notified. A link to the permit is on the right hand side of this page. Submit this permit application to the Traffic Engineering and Operations Division, 12450 Washington Street. For more information, call 720-977-6490.  

Step 2: An alcohol permit is required if you choose to have alcohol at a party that will take place on city sidewalks, streets or at parks. Only 3.2% alcohol may be consumed. Bring or submit your approved traffic control permit to the City Clerk's Office along with your alcohol permit application. The alcohol permit takes 30 days to process and requires a refundable deposit of $50. If you would like to apply, please read the instructions, complete the application and submit it with other applicable documents to the City Clerk’s Office, 9500 Civic Center Drive, 303- 538-7230. A link to the permit is located on the right hand side of this page. 

Step 3: You can reserve safety cones for block parties that happen during August and September. To help residents celebrate National Night Out and Good Neighbor Day, Neighborhood Services has a limited number of safety cones and bars for hosts to borrow for their neighborhood block party.  Bring or submit your approved traffic control permit to Neighborhood Services along with your completed Block Party Registration form, which can be found on the right side of this page. Reserving the safety cones and bars requires a refundable deposit of $30.  Neighborhood Services is located on the north side of City Hall, 9500 Civic Center Drive. You can email forms to neighbor@cityofthornton.net.


Remember to be considerate of neighbors who are not at the party.  The Thornton Police Department will enforce the City Code (Section 38-441), which states that it is unlawful for any person or entity to knowingly, willfully or recklessly make, permit, or cause any sound that is an unreasonable noise.  If you have a question about noise or are being affected by excessive or unreasonable noise, please call the Police Dispatch Center at 720-977-5150.