# Plan a 21st *birthday*

In Australia the legal drinking age is 18, so a 21st is a party, not a legal threshold. The venue still has to run a licensed room: who is allowed in, when the music stops, and what the bond covers are the questions that decide the night.

Updated 25 October 2026

## Timeline

- **Three months out, if you can**: Saturdays are the dates other parties want. Ask about the date in the first email, and name a second date.
- **Six weeks out**: You can still find a room, with fewer choices. Send the enquiry now rather than waiting for a mood board.
- **A month out**: Compare the totals. Visit the room at the time of night you’ll be in it. Noise in an empty room at 2pm is not the party.
- **Two weeks out**: Pay the deposit the venue asked for. Confirm the finish time, the cake, and who is let in.
- **The week of the party**: Send the final numbers. Tell the guest of honour’s family the arrival time, not just the start on the invitation.

## Checklist

1. Guest count for the room you want: seated, standing, or a mix. Add the parents if they’re staying.
2. Two dates, and the time the music must stop.
3. Whether alcohol is served, and who checks identification at the door.
4. Cake, candles, and any fee to cut and serve it.
5. Your own DJ or playlist, and what the venue forbids.
6. A bond: how much, what it covers, and when it comes back.
7. Decorations that are allowed, and the ones that aren’t (confetti and tape are the usual no).
8. How people get home after the finish time.

## Budget

A bar may quote a minimum spend instead of a room fee. A hall may quote room hire and leave food to you. A restaurant may quote per head. None of those is “the price” until you use the same guest count. Split the parents’ contribution and the guest of honour’s before you enquire, so you know which total you can actually say yes to.

In Perth, Eventier’s catalogue on 25 October 2026 has 576 rooms with an email whose published capacity falls between 40 and 150. 202 of those publish a price on the venue’s own site. That is a count of rooms, not a typical price, and it is not a national figure. The [Perth page for this occasion](https://eventier.app/venues/perth/21st-birthday/) records the capacity rule and the Overture Maps attribution.

Ask every venue which of the three you are being quoted, then put the same guest count through each answer. The [cost per head calculator](https://eventier.app/guides/venue-cost-per-head/) does that arithmetic in the browser. [how to compare venue quotes](https://eventier.app/guides/compare-venue-quotes/) is the same method written out.

## What to ask every venue

1. Is the date free, and what time does the music have to stop?
2. What is the total for our guests: room hire, a minimum spend, or per head? What does the bond cover?
3. Who checks identification, and is there an age rule beyond the licence?
4. Can we bring a cake and a DJ, and what do you charge for each?
5. Is the room private, or shared with the rest of the venue?

Keep the first email to those five. [questions to ask a venue](https://eventier.app/guides/questions-to-ask-a-venue/) is the rest, once a room is on the shortlist. The [venue enquiry email template](https://eventier.app/guides/venue-enquiry-email-template/) is there if you would rather send it yourself.

## What Eventier will and won’t do

Eventier finds rooms, writes the enquiry, and sends it only after you approve it. It sends up to two follow-ups if a venue goes quiet, and lines the quotes up side by side. It never signs, books or pays. Finding venues and writing the emails are free. Sending them takes an Event Pass (A$11.99) or Eventier Pro (A$39.99 a year).

Place leads come from [Overture Maps](https://docs.overturemaps.org/attribution/) Places (Overture Maps Foundation). That theme includes data from Meta, Microsoft, PinMeTo, Krick, RenderSEO, DAC, BrightQuery, Birdeye, Uberall and the OpenTravel Alliance under the [CDLA Permissive 2.0](https://cdla.dev/permissive-2-0/) licence, Foursquare data under the [Apache Licence 2.0](https://www.apache.org/licenses/LICENSE-2.0), and AllThePlaces under CC0. These pages do not republish those records. Counts are rooms Eventier read from venues’ own websites, on 25 October 2026.

## Start with the room.

Eventier finds venues and writes the enquiry. You approve it before it sends. Up to two follow-ups. Quotes side by side. It never books or pays.

Free to search. Sending the emails takes an Event Pass (A$11.99) or Eventier Pro (A$39.99 a year). Eventier never books or pays.

More

- [21st birthday venues in Perth](https://eventier.app/venues/perth/21st-birthday/)
- [Venue cost per head](https://eventier.app/guides/venue-cost-per-head/)
- [Questions to ask a venue](https://eventier.app/guides/questions-to-ask-a-venue/)
- [Venue enquiry email template](https://eventier.app/guides/venue-enquiry-email-template/)
- [How to compare venue quotes](https://eventier.app/guides/compare-venue-quotes/)
- [All planning guides](https://eventier.app/plan/)