21st Birthday Party Venues for Hire in Bath

Booking costs of 21st birthday party venues average £1500 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 Bath, based on Tagvenue data:

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 Bath, together with the standard prices in each size range, based on Tagvenue data (September 2026):

These are the venues within 0.2 mi from central Bath, available to book on Tagvenue:

• Whole Venue at Baba's Mezze Bath on 19 Barton Street - 0.1 mi from centre.
  Venue said: The bar area is stocked with a variety of drinks and is surrounded by shelves filled with bottles and decor.
• The Beneath Bar at The Botanist, Bath on 46a Milsom Street - 0.1 mi from centre.
  Venue said: With a standing capacity of up to 150 comfortably with three arches and two secret booths, set up for live music and DJ plus a well stocked bar, this space is the perfect space for work gatherings, weddings, birthdays, every...
• The Roman Room at Square Grill Brasserie Restaurant & Piano Bar on 11-12 Abbey Churchyard - 0.2 mi from centre.
  Venue said: Overlooking the Roman Baths and the skylight that flood the space with light. Private dining functions and canapes can be arranged, with the menus amended to meet guests’ needs.

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

Smaller 21st birthday party venues usually fit up to 40 guests standing. Here are some great options in Bath, based on Tagvenue data as of September 2026:

• Duke at The Elder Restaurant - dining room for 10 guests
  Venue said: The Duke room can accommodate up to 10 guests for working dinners, family gatherings and small dining parties or celebrations. The space has a flexible layout and features both natural and mood lighting.

• Private Dining at Sarthi Bath - dining room for 30 guests
  Venue said: Sarthi Private Event Space is a smaller, more private dining area designed for groups of up to 24. It works well for birthdays, family meals, business dinners, or small celebrations — somewhere you can sit together comfortably...

• The Pulteney Room at No.15 by GuestHouse, Bath, rated 4.9/5 - function room for 16 guests
  Venue said: At No.15, our commitment to hospitality extends beyond mere functionality. Each of our guest areas and corporate event spaces is infused with a distinctive sense of wit and personality.

Cheap 21st birthday party venues in Bath start from £150 minimum spend per event or £20 per person. Check out these budget-friendly spaces you can book through Tagvenue, as of September 2026:

• Labyrinth Nightclub Onyx Bar at Labyrinth Bar & Nightclub, from £150 minimum spend per event (up to 200 guests standing)
  Venue said: It’s a popular pick for birthdays, celebrations, or just a more organised night out. You still get the energy of a club, but with your own space to settle into.

• Main Dining at The Coconut Tree Bath, from £24 per person (up to 100 guests standing)
  Venue said: If you’ve got something to celebrate, why not take over the whole place? The Coconut Tree Bath can fit around 100 guests, making it a top spot for birthdays, work dos, or a big get-together with your crew.

• The Elder Room at The Huntsman, from £25 per person (up to 80 guests standing)
  Venue said: What guests say: The room is beautifully presented for private celebrations, and event planning support is attentive and well organised.