Boulder Open Space and Mountain Parks (Flagstaff Mountain facilities)

01 The rules

Permit fact card

Permit

Required: Facility Use Permit — reserve an OSMP shelter or facility online (ceremonies are only permitted at designated shelters and facilities)

Other fees

Facility fees per time block. Sunrise Amphitheater: one-hour early block (6 a.m. to 9 a.m.) $100 resident or $150 non-resident; three-hour block $300 resident or $400 non-resident. Stone Shelter, Wood Shelter, Halfway House, Green Mountain Lodge and Bluebell Shelter: one-hour block $50 resident or $100 non-resident; three-hour block $175 resident or $275 non-resident. Resident means a household inside City of Boulder limits. 6% non-City service charge on online transactions. City Alcohol Permit $25 (beer and wine only). $100 fee at Green Mountain Lodge and Halfway House if the key is not returned on time.

Entrance & parking

Parking is not included with a reservation. Vehicles not registered in Boulder County need a daily ($5.00) or annual permit.

Booking window

You can reserve a shelter or facility up to two years in advance of the event date.

Group size

Sunrise Amphitheater 100. Stone Shelter 100 total. Wood Shelter 100 total. Halfway House 49. Green Mountain Lodge 49. Bluebell Shelter 50. All Summit Facilities combined may not exceed 100 people in any one time block.

Caps & rules

Three-hour blocks run from 10 a.m. to 9 p.m. with a mandatory unbookable hour between them; early one-hour blocks run 6 a.m. to 9 a.m. No fires, open flames or smoke-producing devices, including unity candles. No tents, canopies or freestanding arches. No flower petals, rice, confetti, birdseed or glitter, and no release of animals or balloons. No glass. No drones. Live bands and amplification are restricted; battery-operated players and acoustic music are allowed. No electricity or water at the facilities. Facilities are not reserved on Memorial Day, Fourth of July, Thanksgiving Day, Black Friday, Christmas Eve, Christmas Day, New Year's Eve or New Year's Day. Parking on Flagstaff Mountain is prohibited 9 p.m. to 5 a.m. Vehicle length limit on Flagstaff Road is 30 feet.

Photographer

A facility reservation permits commercial photography only within the designated facility. Commercial photographers must follow the separate OSMP Commercial Use Permit terms for photography on OSMP lands outside the reserved facility area.

Seasons

Summit facilities (Stone Shelter, Wood Shelter, Sunrise Amphitheater) cannot be reserved October 31 through April 30 and Flagstaff Summit Road is closed to vehicles then. Halfway House is closed Veterans Day through New Year's Day. Snow tires or chains are required on Flagstaff Road October 1 through May 31. The Sunrise Amphitheater is described as popular for weddings between May and October.

02 Where

6 designated ceremony sites

As listed by the agency. Numbers in brackets are the group caps it gives.

1. Sunrise Amphitheater (100)
2. Stone Shelter (100 total)
3. Wood Shelter (100 total)
4. Halfway House (49)
5. Green Mountain Lodge (49, hike in only)
6. Bluebell Shelter (50, hike in only)

Sources

Where each value comes from

1. Shelter Rentals — City of Boulder ↗ Read on November 6, 2026
2. OSMP Permits — City of Boulder ↗ Read on November 6, 2026