Build Up or Buy More Floor? The Double-Deck Decision.
Floor space is the largest single line in an exhibit budget, so a second level looks like free square footage: same booth fee, more room. It is not free, and it is rarely about square footage. A deck brings engineering, approvals, life-safety equipment and labor that a bigger footprint never would. What it gives back is separation: a quiet, controlled level above the noise of the aisle. A deck does not pay for itself in square feet. It pays for itself in meeting hours.
You are buying a different kind of space, not more of the same
The ground floor of an island booth is built for discovery: open sightlines, walk-up demos, staff who can catch someone in the aisle. The upper level works the opposite way. Nobody wanders up a staircase by accident, which is exactly what makes it valuable, and exactly what makes it fail when it is used for the wrong job.
Where a deck earns its cost
Scheduled, closed-door conversations with customers and prospects who have already been qualified: executive briefings, pricing discussions, roadmap reviews under NDA, partner meetings. The deck keeps those conversations on the show floor, inside your own space, without sending a senior buyer across the street to a hotel.
Where it struggles
Anything that depends on walk-up traffic. Demos, product displays and casual hospitality upstairs tend to sit empty, because attendees will not climb to find out what is there. If the upper level has no booked agenda, it becomes the most expensive storage room on the floor.
What it does to the ground floor
Moving meetings upstairs frees the ground level to stay open. Many islands lose half their footprint to enclosed rooms; a deck can return that area to demos and conversation. That second effect is often worth as much as the rooms themselves, and it should be counted in the decision. Our guide to meeting spaces inside the booth covers the room formats that actually get used.
The ground floor is for people who have not decided to talk to you yet. The upper level is for people who already have.
Four cost layers that a bigger footprint never brings
The structure itself is the visible part of the price. The rest comes from the fact that an occupied second level is treated as a building inside a building, and every venue and fire authority reviews it that way.
Engineering and approvals
Occupied upper levels need drawings sealed by a licensed structural engineer, and some venues require the engineer to be registered in that state. The drawings go to show management, the venue and the local fire authority, often well before your other paperwork is due. Revisions after submission cost time you rarely have.
Watch forDeadlines that land 45 to 60 days before the show, earlier than almost anything else on your calendar. The approval sequence for island booths is mapped in the three approvals an island booth needs.
Life safety
Covered space under a deck changes what the fire code requires: battery smoke detectors that can be heard outside enclosed areas, extinguishers by level or by area, posted occupancy limits, and at size thresholds a second staircase or sprinklers. Many venues also require a fire watch, a trained attendant on duty whenever the hall is closed, billed to the exhibitor at the prevailing rate.
Watch forFire watch hours across every closed night of move-in and the show. They are easy to leave out of a forecast and they add up.
Show fees on the upper level
Some shows charge for second-level space on top of the floor rate. One medical society’s rules, for example, allowed a second level on 20×20 and larger booths for an added fee of $15 per square foot. Other shows charge nothing extra. The only way to know is the exhibitor manual of the show you are going to.
Watch forA per-square-foot upper-level fee changes the math entirely, because it narrows the gap between building up and buying out.
Labor, lifts and freight
A deck is heavy, structural and slow to build compared with walls and graphics. It needs a crew that knows the system, and almost always lift equipment that exhibitors cannot operate themselves, ordered from the official contractor. Steel and aluminum decking adds freight weight in both directions, and weight drives material handling. The design levers are covered in freight by design.
Watch forInstall sequences that push the deck into overtime. Labor windows and minimum calls vary sharply by city; see same booth, six cities, six labor bills.
Three major venues, three different sets of thresholds
There is no national standard for trade show decks. Stair counts, sprinkler triggers and submission deadlines are set by the venue and the local fire authority, and the thresholds are close enough to a typical deck size that small design choices decide which rules apply.
Las Vegas Convention Center
Recent show manuals require any occupied upper deck to have an approved plan stamped by an engineer registered in Nevada, with detailed plans in at least 45 days before move-in. Upper areas over 300 square feet, or occupied by more than nine people, need two remote exits, and spiral stairs are not allowed. Smoke detectors are required in covered areas over 300 square feet and in any enclosed covered area. Sprinklers under contiguous covered areas over 1,000 square feet are triggered by longer events or by vehicles, open flame or hot work on display.
Design noteShows set their own height caps; one major LVCC show limits islands to 20 feet. Hall-by-hall detail is in our Las Vegas venue guide.
McCormick Place
Drawings stamped by a licensed structural engineer, with dimensions and an isometric view, go to the venue for fire safety and Chicago Fire Department review at least 60 days before the show opens. A second staircase is required once the upper deck is designed for more than ten people or exceeds 1,200 square feet. The second level must stay open and uncovered, or sprinklers are required, and fire watch applies whenever a completed multi-level booth is closed.
Design noteSixty days is the earliest structural deadline of the three, so a Chicago calendar should set the design schedule for any deck that travels. See our McCormick Place guide.
Orange County Convention Center
Plans signed by a registered architect or engineer go to the venue before construction. An occupied second level over 300 square feet needs two remote stairways and may not be covered, and each upper area is capped at 1,000 square feet unless it has a ten-foot clear firebreak on all sides. Fire watch is ordered at least two weeks before move-in, and a sprinkler system designed into the original submission can replace it.
Design noteOccupancy or weight limits must be posted at the foot of the stairs, which is worth designing into the graphics rather than taping on at the last minute.
These patterns come from recent venue policies and show manuals. Each show’s exhibitor kit sets the working rules and deadlines, and they change. Confirm them for the specific show before design starts, not after.
Compare cost per meeting hour, not cost per square foot
Square-foot comparisons make a deck look cheap, because the upper level adds area without adding floor rent. But the upper level is only worth what happens in it. The honest comparison is the incremental cost of each option divided by the qualified meeting hours it actually delivers.
Added floor rent at the show’s rate, plus the exhibitry, carpet, electrical, cleaning and labor that come with every extra square foot. Rooms land on the ground floor, in view of the aisle, and the open area shrinks unless the footprint grows enough to carry both.
Deck structure, stairs and railings, engineering and approvals, life-safety equipment, fire watch, any upper-level show fee, plus extra labor and lift time. Rooms sit above the floor, private but on site, and the ground level stays open.
A hotel suite or meeting room: room rate, catering, AV and the staff time lost walking between venues. Maximum privacy, but every meeting costs the buyer a trip off the floor. How to run both together is covered in the booth and the suite.
To compare them on the same terms, count capacity first. A deck with four meeting rooms, across three show days of about seven exhibit hours each, offers 84 room-hours. Nobody books every slot, so apply the occupancy your sales team can realistically fill:
Divide each option’s incremental cost by the meeting hours it delivers and the decision usually becomes clear. Then add back what the numbers miss: the open ground floor a deck preserves, and the buyers who will take a fifteen-minute meeting upstairs but will not leave the hall for one.
If you cannot fill the rooms, no structure will make them worth building. Book the agenda first, then size the deck to it.
A short test before anyone draws a staircase
Your sales team runs a scheduled meeting program, the footprint is already a large island, the show allows the height, and enclosed rooms would otherwise eat the open floor you need for demos.
Demos, equipment and walk-up conversation drive results, meetings are short and informal, or the show charges enough for upper-level space that floor rent is the cheaper route to the same capacity.
Conversations are long, highly confidential or hospitality-led, the guest list is small and senior, or the hall’s rules and deadlines make a deck impractical for this show.
Most programs need a deck at only a few shows a year, which is why renting the structure is the common answer and owning one rarely pays off unless it goes to nearly every show on the calendar. The same five-year logic we use for the booth itself applies: rent or own, the five-year math.
Seven decisions that keep a deck on schedule and on budget
- Confirm the show allows it, at your space.
Check the height cap for your booth type and the ceiling clearance over your specific space before any design work. Ceiling heights can differ within the same hall.
- Decide how many people will be upstairs at once.
Occupancy sets the load rating, the number of stairs and exits, and the posted limits. Agree on it with sales before design starts, not after the engineer has drawn it.
- Design to the thresholds.
Upper areas just under the 300-square-foot or 1,000-square-foot lines can avoid a second staircase, a firebreak or sprinklers in some venues. Keep the top of the deck open; covering it is the fastest route to a sprinkler requirement.
- Work backward from the earliest deadline.
If a deck travels across your calendar, the strictest submission date, often Chicago’s sixty days, sets the design freeze for every show.
- Order fire watch, lifts and labor with the plan.
Fire watch hours, lift equipment and the deck crew belong in the same order as the structure, priced into the forecast. Our show services guide maps the deadlines.
- Plan access for everyone.
Guidance for temporary exhibits is thin, so the cautious course is to provide accessible access to the upper level or make everything it offers available on the ground floor as well.
- Route people upstairs on purpose.
A host at the foot of the stairs, a meeting schedule the whole booth team can see, and a clear handoff from ground-floor conversation to upstairs meeting. A deck without a routing plan stays empty.
Double-deck FAQs
Is a double-deck booth cheaper than buying more floor space?
Sometimes. The upper level adds area without adding floor rent, but it brings engineering, approvals, life-safety equipment, fire watch, extra labor and at some shows an upper-level fee. Compare the incremental cost of each option against the qualified meeting hours it delivers, not against square feet.
How far in advance do double-deck plans need to be submitted?
Often 45 to 60 days before the show or move-in, depending on the venue. McCormick Place asks for stamped drawings at least 60 days before opening; recent Las Vegas Convention Center show manuals ask for detailed plans at least 45 days before move-in. Always confirm in the current exhibitor kit.
Do double-deck booths need sprinklers?
It depends on the venue, the size of covered areas and whether the upper level is covered. Keeping the top of the deck open and covered areas under the venue’s threshold, commonly around 1,000 square feet, often avoids added sprinklers, though smoke detectors and extinguishers are still required.
How many staircases does a double-deck booth need?
At least one, and usually two once the upper level passes a size or occupancy threshold. Recent rules put that line at around 300 square feet or nine to ten occupants in Las Vegas and Orlando, and at more than ten people or 1,200 square feet at McCormick Place. Spiral stairs are generally not allowed.
Should we rent or buy a double deck?
Most programs use a deck at only a few shows a year, so renting the structure is usually the better fit. Ownership makes sense only when the deck goes to nearly every show and you are prepared to store, maintain and re-certify it.
Up or out, decided before you commit.
We plan every booth around the building it is going into: the height cap, the stair and sprinkler thresholds, the submission dates and the labor rules. Then we price the exhibit as one all-inclusive number and map the show-billed costs for your exact booth, so the second level never arrives as a second bill.
Talk Through Your Next Island →
