A small meeting room for an afternoon call costs a fraction of what a full-day conference room with catering runs, and the gap between the cheapest and most expensive option in the same city can be five times over. Here's what actually drives the price, what to expect in the US, UK, Australia and Singapore, and where the extra charges tend to show up after you've already booked.

What determines the price

Room rates in this market move on five factors, and they don't carry equal weight.

• Provider type moves the price the most. A meeting room booked through a coworking space or an online booking marketplace routinely costs half of what the same size room costs in a hotel, because hotels bundle staffing, food and beverage minimums, and higher overhead into every hour.
• Location comes next. Central business districts cost two to three times more than suburban or secondary-city venues in every market covered here. A room a ten-minute walk outside a CBD often costs 30 to 50 percent less than one inside it.
• Capacity and duration change how the price is structured, not just the total. Small rooms for a handful of people are almost always priced by the hour. Once a room holds more than 15 to 20 people, venues shift to half-day, full-day, or per-person day-delegate pricing, since hourly bookings tie up large rooms that could otherwise be sold as a full-day package.
• Amenities and catering are usually optional add-ons rather than part of the base rate, which is why two rooms with the same square footage and the same hourly price can end up costing very differently once AV and food are added.
• Day and time matter more than most people expect. Tuesday to Thursday, especially mid-morning, is peak demand in every market covered here. Early morning, late evening, and Friday afternoon bookings often carry a discount, while some venues now apply the reverse: a peak-hour surcharge on top of the base rate.

Typical price ranges by market

The figures below are per hour for a small meeting room (roughly 2 to 12 people) and per half-day or full-day for a larger conference room (roughly 10 to 50 people), since that's how each market actually prices a room once it crosses that size.

United States

A small meeting room runs $25 to $75 an hour at a typical coworking space, $30 to $100 at a dedicated meeting-room provider, and $50 to $150 at a hotel. The national median sits close to $45 an hour. Smaller metro areas can go as low as $20, while flagship buildings in Manhattan or downtown San Francisco reach $70 to over $250 an hour.

A larger conference room runs $25 to $185 an hour depending on the city and provider. On a half-day or full-day basis, expect $400 to $700 for a full day in a smaller conference room and $1,000 to $1,500 for a larger one at a coworking or marketplace venue. Hotels price the same size room at $250 to $600 a day for a mid-range property and $1,000 to $2,500 for an upscale one in a major city, before food and beverage minimums. Where a hotel bundles the room, AV and catering into a per-person day package, that package typically runs $120 to $230 per person.

United Kingdom

In London, a small meeting room costs £35 to £60 an hour in budget areas, £60 to £90 in core business districts such as the City or Canary Wharf, and £90 to £150 in premium locations, with West End rooms at private members' clubs reaching £210. Outside London, the same size room can cost as little as £16 to £40 an hour in secondary cities.

For a larger room, a half-day booking for 20 to 30 people runs £600 to £1,000 in most London business districts, and a full day £1,000 to £1,800. For groups of 50 or more, venues typically quote a day delegate rate of £75 to £140 per person, covering the room, refreshments and lunch. Booking the room alone, without catering, runs £2,500 to £5,000 or more per day for a quality London space. Outside London and at the value end of the market, day delegate rates can start around £20 to £65 per person.

Australia

A small meeting room in Sydney averages A$99 an hour city-wide and closer to A$150 in the CBD, with a typical range of A$77 to A$154. Melbourne runs slightly lower, averaging A$77 an hour city-wide and around A$115 in the CBD. Fringe suburbs in both cities can come in from A$45 an hour.

Medium rooms for 10 to 20 people average around A$150 an hour in Sydney, and larger rooms for 30 or more average close to A$200. A full day's hire spans A$280 to A$950 depending on room size and location. Hotel meeting rooms are typically quoted from A$74 per person, or A$250 to A$500 for a full day of catered space.

Singapore

A small meeting room averages S$66 an hour, with a typical range of S$35 to S$127. Rooms near Victoria Street or Bugis average around S$35, while the same size room in Raffles Place averages S$120. Entry-level coworking rooms can be found from S$9 to S$33 an hour.

Medium rooms for 10 to 20 people average around S$80 an hour, and larger rooms for 30 or more average S$127 to S$140. Conference rooms overall span S$80 to S$490 an hour depending on size and venue. Hotel or full-day packages that include catering typically run S$75 to S$130 per person.

Hidden costs to check before booking

The advertised hourly rate is rarely the final price. A handful of add-ons show up across every market covered here, and together they can add anywhere from a quarter to the full base rate back onto the bill.

AV and technology beyond a basic screen usually cost extra: budget $25 to $100 per item in the US, or £50 to £150 a day for a full hybrid-conferencing setup in the UK.

Catering and beverages are billed separately from the room in most cases. In the US, expect $15 to $75 per person. In the UK, a working lunch runs from £18 for sandwiches up to £35 to £55 for a hot buffet, plus service. In Singapore, per-person catering packages run S$88 to S$130, and some venues set a minimum spend instead of a room fee, often starting around S$950.

Service charges are one of the largest and most consistent hidden costs. Hotels in particular add 18 to 26 percent on top of both the room and the food and beverage bill, a pattern that holds across all four markets.

Overtime adds up fast if a meeting runs long: expect 1.5 to 2 times the hourly rate for extra time, and in London specifically, staffing a room before 8:30am or after 5:30pm can add £50 to £150 an hour on its own.

Cancellation policies vary by provider type. Independent venues commonly charge 50 to 100 percent of the booking fee if you cancel within 24 to 48 hours, while coworking chains tend to offer more flexible terms, sometimes free cancellation up to a couple of hours before the booking or several weeks in advance.

A few smaller charges are easy to miss when comparing quotes: setup and cleaning fees of $50 to $200 per event, parking at $10 to $40 per vehicle, and breakout rooms priced at roughly 75 percent of the main room's rate even when they sit empty for most of the day.

The only reliable way to compare two venues is to ask for the full quote, room, AV, catering and service charge included, rather than comparing the headline hourly rate alone.