Custom-Built or Modular System Booth? Differences, Use Cases, and Cost Structure
Updated: 2 days ago
By Chris | Vision Design
A modular system boothis an exhibition booth assembled from modular aluminum profiles and panels. The structure can be taken down and reused, the build is fast, and the budget is easier to control. Most of the cost is in graphics and on-site assembly.
A custom-built boothis made to order from timber, built in the workshop and on site. Every surface can have its own form and material, which gives a more complete brand feel, but materials and labor cost more and the booth is usually dismantled after the show.
How to choose:Tight budget and timeline, or the same booth going to several shows → modular system booth. Curves, special forms, or a stronger brand finish → custom-built booth. Many brands mix the two: a custom-built feature wall with modular walls elsewhere.
If the booth is mostly straight lines, its dimensions can follow the module, and you want a short build with predictable costs, a modular system is usually the better fit. If you need arcs, curved surfaces, large volumes, or special forms, it has to be custom-built.
In practice, many booths use both: one method for the main structure, the other for cabinets or specific parts. Below we go through the differences between the two methods, when each fits, and what affects build time and cost. We do not discuss prices here; every project is estimated on its own specifications.
Key points: A modular booth gets its design character from graphics and lighting. Its strengths are a short build, predictable cost, and reusable materials. A custom-built booth gets its character from the structure itself, and only custom-built can do arcs and large volumes. Ask about form, schedule, and reuse first, and the answer usually becomes clear.
Two Methods, and Where the Structure Comes From
A modular system is put together from standard components. Posts and panels come in fixed sizes; panels slot into grooves in the posts and are held top and bottom by horizontal beams.
Because the sizes are fixed,booth dimensions need to follow the module so panels do not have to be cut. Heights not in the spec sheet can be reached by extending the posts.
Custom-built is made to order. Walls are framed with timber battens and plywood. Many walls that look thick are actually "false thickness": a hidden frame inside gives the wall depth, but it is not solid.
Custom-built parts are made in the workshop first, then assembled, filled, and finished with prints or veneer after move-in. At Taipei Nangang Exhibition Center, for example, the exhibitor manual requires custom-built booths to be fabricated outside the venue and only assembled inside; power saws and spray painting are not allowed in the hall.
Design Freedom: Straight Lines and Curves
Modular posts and panels have fixed spacing and widths, so a true curve is not possible. When an arc is needed, we approximate it with an octagonal plan. That is why modular booth design focuses on graphics, brand color, and lighting, so a standard structure can look close to what you imagined.
A custom-built booth's design character comes from the structure itself.Curved overhead beams, curved walls, and large sculpted volumes can only be made custom-built.
The more unusual the form, the more detailed the construction drawings need to be. For parts like overhead beams and curved walls, we draw separate unfolded drawings that mark break points and segment lengths, so the carpenters know exactly how to build them.
Structure and Span
Either way, the booth must meet venue regulations first. Taking the Taipei Nangang Exhibition Center technical regulations (Aug 2026 edition) as an example: overhead feature beams spanning more than 6 m need a supporting post(10.1.12), and backdrops or signboards spanning more than 9 m need lateral or horizontal bracing (10.1.11).
Within those rules, the two methods place posts differently. We generally keep custom-built beams within the 6 m limit. Modular posts have a shorter unsupported span than custom-built, so they need posts more often; switching to square posts with a larger section allows longer spans.
These are starting points for planning. The final call always rests on the structural review and that year's exhibitor manual.
Build Time: How Much Has to Happen on Site
A modular system is an arrangement of standard parts: once the structure stands, the booth has its shape, so on-site assembly is fast. Custom-built parts are made in the workshop, but after move-in they still need positioning, assembly, filling, and graphics application.
Take a joint booth at Automation Taipei 2026 (custom-built main structure, modular lower cabinets): on the first move-in day, materials arrived a little after 9 a.m., the overhead beam was lifted into place at 2:30 p.m., the modular cabinets started going in close to 3 p.m., and graphics went up after 3.
For a custom-built booth, the critical path is usually structure, electrical, filling, then graphics.Filling is checked by whether the graphics lie flat once applied. If nail holes are not treated properly, they show through the print.
With either method, the date your posters and artwork are finalized affects the schedule. Graphics come late in the sequence, so late files compress everything.
What Shapes the Cost Structure
We do not discuss prices here, but we can explain what the cost is made of:
How it is priced:A modular system is priced by the number of posts, panels, and fittings times a unit rate, so it is easier to estimate in advance. Custom-built is estimated by form and materials, and the more unusual the form, the harder it is to standardize.
Reuse:Modular materials are rented: they come back after the show and can be used again next time. Exhibitor manuals also point out that simple, reusable materials lower cost and save time at move-out. Custom-built parts are mostly single-use, so dismantling and removal after the show have to be counted too.
Double-sided or single-sided:Walls visitors can see from both sides get a finished back; walls seen only from inside get a single-sided backing. Double-sided means twice the panels and surface treatment, so we decide wall by wall.
Surface treatment:Custom-built needs filling. Graphics costs are made up of the face material, the backing board (composite board; thicker costs more), installation labor, volume, and move-in/move-out fees, with extra charges outside Taipei.
Clean, minimal design:The cleaner the booth, the more a single seam or slight color difference shows. Edge finishing and color control need time set aside.
Choosing materials for specific areas:A green wall, for example, is costly if it uses real plants throughout. A common approach is printed graphics as the base, with real plants added as accents.
Mixing Methods Is the Norm
Many booths are not either-or. In that 2026 Automation Taipei joint booth, the main structure was custom-built and the modular system was used only for the lower cabinets.
Another common approach uses modular aluminum profiles as the frame, wrapped in wood-grain veneer so it looks like a custom-built wall.How convincing it looks depends on how carefully the edges and corners are finished.
Clients sometimes switch a whole project from custom-built to modular in the middle of discussions. So before drawing, we confirm the build method and then follow that method's rules: modular drawings are dimensioned by the module, while custom-built drawings use double lines along the outer frame with mitered corners.
How to Choose: Three Questions
Does the design need curves, large volumes, or a special structure? If yes, go custom-built or mixed.
Is the schedule tight, and do you want the cost clear up front? If yes, start with a modular system.
Will this booth be used again? If yes, choose a modular system, or make the reusable parts modular.
FAQ
Q1: Will a modular system booth look basic?
A modular booth's finish comes mainly from graphics and lighting. With well-planned brand color and lighting, a standard structure can still carry a complete brand feel. If one particular form is itself the brand's signature, that part can be custom-built.
Q2: Is custom-built always more expensive than modular?
Not necessarily; it depends on the form and materials. Custom-built is estimated by form; modular is priced by the number of standard parts. A simple custom-built booth and a complex modular one may not differ much. We suggest estimating both from the same floor plan and comparing.
Q3: Can a modular system make curves?
A modular system cannot make a true curve; it is usually approximated with an octagonal plan. If the curve is central to the design, we suggest building that section custom.
Q4: Can we switch methods partway through?
Yes, but the earlier the better. Switching affects the construction drawings, materials, and schedule. If you switch after the drawings are final, the drawings and material prep both start over.
Related Projects
Automation Taipei 2026 joint booth project(custom-built main structure + modular lower cabinets)
Related services: Custom-Built Booth Design & Build, Modular System Booth Planning & Build
Further reading: The Exhibition Planning Process in 6 Stages, Planning a Multi-Brand Joint Booth, Building a Booth at Taipei Nangang Exhibition Center
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