30th Birthday Party Venues for Hire in Cardiff

Booking costs of 30th birthday party venues average £500 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 Cardiff, based on Tagvenue data:

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

• Cabin 1 at Lo Lounge in Cardiff - rated 5/5
  Our user said: ‘Location was great over looking the bay. Would highly recommend booking this venue.’

• Private Upstairs Room at O'Neill's Trinity Street Cardiff in Cardiff Centre - rated 5/5
  Our user said: ‘Venue was great size, bar staff were brilliant...’

• PARTY AND EVENT VENUE at DNC BAR in Cardiff Centre - rated 4.8/5
  Our user said: ‘The venue was a great size, places to sit down, could connect to the speaker...’

You'll find 30th 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 Cardiff, together with the standard prices in each size range, based on Tagvenue data (September 2026):

These are the venues within 0.1 mi from central Cardiff, available to book on Tagvenue:

• Upstairs Room at O'Neill's St Mary Street Cardiff on 85-87 St Mary St, Cardiff - 0.1 mi from centre.
  Venue said: With plenty of TVs and a dedicated function room, you’ll never miss a moment of the action. Looking for something more private? Our second floor has it all—your own bar, private toilets, screens, projectors, and flexible...
• Top Bar at Slug and Lettuce Cardiff Central on 84 Saint Mary Street - 0.1 mi from centre.
  Venue said: Ideally located within a few minutes walk from Cardiff station and on the busiest street in town, this restaurant and bar is a top notch destination for a catch up with friends, private events and that all important hen do.
• The Gallery (Upstairs) at The Cocktail Club Cardiff on 75 Saint Mary Street - 0.1 mi from centre.
  Venue said: The top floor bar ‘The Gallery’ – the hottest spot in Cardiff to throw your next serious soiree in.

Based on Tagvenue data (as of September 2026), users looking for 30th birthday party venues most commonly go for these venue types:

Smaller 30th birthday party venues usually fit up to 50 guests standing. Here are some great options in Cardiff, based on Tagvenue data as of September 2026:

• Downstairs Section at O'Neill's Trinity Street Cardiff, rated 5/5 - function room for 40 guests
  Our user said: ‘Our bartenders were so so lovely and accomodating, and we were able to run our evening exactly as we wanted.’

• Outdoor Space at Giovanni's in Park Place - outdoor space for 45 guests
  Venue said: Giovanni's in Park Place is an Italian restaurant located in Cardiff, UK. We offer both indoor and outdoor areas for private hire. Our dining spaces are available for small and medium-sized events.

• Private Dining Room at Gaucho Cardiff, rated 4.5/5 - dining room for 30 guests
  Venue said: The private dining room combines Gaucho’s premium food and wine offerings with an environment that’s ideal for creating memorable events.

Cheap 30th birthday party venues in Cardiff start from £250 minimum spend per event or £15 hire fee per hour. Check out these budget-friendly spaces you can book through Tagvenue, as of September 2026:

• Upper Level at Be At One Cardiff, from £250 minimum spend per event (up to 100 guests standing)
  Venue said: It’s the perfect way to double the fun while keeping within your budget. Make your event truly memorable by choosing the Upper Level at Be At One Cardiff—a space designed to make your special moments even more extraordinary.

• Private Room in A Lounge at Wow Lounge Cardiff, from £15 hire fee per hour (up to 25 guests standing)
  Venue said: Our lounge provides a setting for intimate gatherings, private parties, or VIP events. A capacity for up to 20 guests. We have plush seating and lovely lighting that sets the mood.

• The Duchess at Lo Lounge, from £80 hire fee per event (up to 50 guests standing)
  Venue said: The Duchess is a versatile and stylish private space, perfect for a range of events. With seating for up to 35 guests, it can be set up to suit your needs—whether it’s a business meeting, a lively comedy night, an intimate...

Consider restaurants, function rooms, or bars for a birthday party with friends and family if you want to spend a few hours celebrating. Warehouses offer flexibility and are great for larger events at a more affordable price than restaurants; however, you'll likely need to arrange catering. In the summer, outdoor spaces like gardens or patios are perfect for tropical-themed birthdays, picnics, or happy hours with friends.

There are several things to consider when planning a birthday, such as the type of event you want, such as dinner, dance or casual gathering. Think about the guest list size and what the birthday celebrant enjoys. Don't forget to plan for entertainment and accessibility, and choose a convenient location.

Check out our Ultimate Birthday Party Planning Guide for all the tips you need!