Adelaide makes turning 21 easy and fun. From elegant cocktail lounges to cosy pubs and private function rooms, there’s a venue for every style. Most include a free $100 bar tab. Whether it’s a lowkey lunch, a big night out, or a sit-down dinner with friends, browse below to find your ideal 21st birthday venue.
Pricing for 21st birthday venues in Adelaide varies based on the venue's pricing model. On average, venues charging a room hire fee cost $667 for Saturday events, with prices ranging from $200 to $2250 across 9 venues. Minimum spend venues typically cost $2404 per booking, ranging from $500 to $9990 based on 18 venues. Final costs depend on factors including venue capacity, suburb location, day of the week, security guard charges and extensions to the guaranteed hire duration. Additional expenses may include DJ hire, entertainment, specialised catering, decorations.
| Pricing Type | Min. | Avg. | Max. |
|---|---|---|---|
| Room Hire Fee | $200 | $667 | $2250 |
| Minimum Spend | $500 | $2404 | $9990 |
Venue pricing varies significantly based on capacity. On average, small venues (up to 70 guests) are more budget-friendly and cost $1640 minimum spend on Saturday events. Medium venues (71-140 guests) typically cost $1914 minimum spend, representing a 17% increase over small venues. Large venues (over 140 guests) average $3613 minimum spend, costing 2.2x more than small venues, reflecting their expanded facilities and capacity.
| Size | Type | Min. | Avg. | Max. |
|---|---|---|---|---|
| Small (≤70) |
Hire | $300 | $1050 | $2250 |
| Spend | $1000 | $1640 | $3500 | |
| Medium (71-140) |
Hire | $300 | $400 | $500 |
| Spend | $500 | $1914 | $3000 | |
| Large (>140) |
Hire | $200 | $333 | $500 |
| Spend | $1250 | $3613 | $9990 |
Pricing data reflects venues listed as of February 2026.
About Partystar: This venue finder booking site will help you find exclusive venues to hire for your private party, in particular your 18th, 21st, 30th, 40th or 50th birthday party, engagement, wedding reception, wake or even the staff Christmas party. Function venues listed are generally pubs, cocktail bars, clubs and some cafes and restaurants. Hire is often free or cheap in locations such as the CBD, Adelaide City area, Norwood and surrounding suburbs.
We find while some people want a stylish nightclub, classy bar or trendy pub venue to impress their friends, others are on the look out for outdoor or unique venues, and some want a cheap function.
