21st Birthday Party Venues for Hire in Southbank, Melbourne

Booking costs of 21st birthday party venues average $4500 minimum spend per event. Costs vary depending on guest capacity, popularity, location, and amenities like sound systems or bar services. Extra charges may apply for custom catering, decor, or event planning services. Packages with add-ons, such as DJs, photo booths, or other entertainment services, can also increase the overall cost. Check out the typical price ranges in Southbank, based on Tagvenue data:

Based on the popularity and user ratings on Tagvenue (updated October 2026), the best options include:

• Entire Venue at BearBrass in Southbank - rated 5/5
  Our user said: ‘Venue was great and location was easily accessible to all guests.’

• Upper Lounge at P.J. O'Brien's Southgate in Southbank - rated 4.9/5
  Our user said: ‘We had a fantastic night at PJ's. The food and service was fantastic.’

• Entire Venue at Eureka 89 in Southbank - rated 4.9/5
  Our user said: ‘Great location - beautiful views of Melbourne. Staff was friendly and professional.’

You'll find 21st birthday party venues in various sizes, from smaller spots to larger venues; keep in mind that the type of space and your chosen layout will affect the capacity! Below you can see the typical venue sizes in Southbank, together with the standard prices in each size range, based on Tagvenue data (October 2026):

Based on Tagvenue data (as of October 2026), users looking for 21st birthday party venues most commonly go for these venue types:

Smaller 21st birthday party venues usually fit up to 50 guests standing. Here are some great options in Southbank, based on Tagvenue data as of October 2026:

• Indoor Space at Mr. Summit - event space for 40 guests
  Venue said: Mr. Summit is a café that operates as a specialty coffee shop and an evening cocktail bar, combining a focused coffee counter with a staffed cocktail programme.

• Swan Lake at Mantra Southbank Melbourne, rated 4.6/5 - function room for 40 guests
  Venue said: Mantra Southbank Melbourne is an apartment hotel centred on self-contained overnight accommodation and on-site leisure facilities. Venue highlights: The hotel provides in-house catering that can accommodate halal, kosher,

• Eureka Room 1 at Mercure Melbourne Southbank, rated 4.6/5 - meeting room for 50 guests
  Venue said: Located on the ground floor of Mercure Melbourne Southbank, Eureka Room 1 is a light-filled, versatile event space ideal for small to mid-sized meetings, workshops, and intimate gatherings.

Cheap 21st birthday party venues in Southbank start from $2000 minimum spend per event or $220 hire fee per hour. Check out these budget-friendly spaces you can book through Tagvenue, as of October 2026:

• Upper Lounge at P.J. O'Brien's Southgate, from $2000 minimum spend per event (up to 50 guests standing)
  Our user said: ‘We had a fantastic night at PJ's. The food and service was fantastic.’

• Entire Space at The Froom, from $220 hire fee per hour (up to 100 guests standing)
  Venue said: The Froom, situated at 56 Market Street in Southbank, Melbourne, emerges as the city's latest premier event and conference venue, poised to redefine the standards of sophistication and functionality.

• Private Suite One at Shadow Play by Peppers, from $500 hire fee per event (up to 30 guests standing)
  Venue said: Whether you're seeking an intimate space for an executive team meeting, a stylish setting for a high-level conference, or a dazzling canvas for a memorable cocktail party, our Private Suites cater to your every need.