Open Plan Office Design: How to Choose the Right Furniture

Open plan office design is the most common layout for commercial tenants and it’s also the one most often redesigned within the first two years of occupancy. That gap says a lot. In most cases, the layout was settled before anyone gave enough thought to furniture, zoning and acoustics and the problems only showed up once people started working there.

At TNT Commercial, we help businesses get open plan right the first time, so they don’t have to fix it after move-in. Think of this guide as the conversation we’d have with you before the commercial interior design plan is final. We’ll look at whether open plan really works, how to zone a space for different kinds of work and which furniture choices make or break the layout.

The Open Plan Debate: Does This Space Work?

Let’s start with the criticism, because it’s fair. Research does show that poorly designed open plan offices can reduce focus and increase distraction by 34%. But when you look at what the research points to, the cause is consistently the same: poor acoustic design and a lack of zoning. The open layout itself isn’t the problem.

One thing that separates a good open plan from a bad one is activity-based working (ABW). The idea is simple: give people a range of spaces and let them pick the one that fits the task in front of them.

Task → Space → Furniture
Deep focus → Quiet zone → Workstation with acoustic screens
Team brainstorm → Collaboration zone → Height-adjustable table, writable surfaces
Phone call → Acoustic pod → Single-person pod
Break or chat → Social zone → Lounge seating

ABW has strong evidence behind it when it’s backed by the right furniture mix. The real failure comes from how open plan is treated:

What we see at TNT: the most common mistake is planning the desk count first and everything else second. Teams end up with rows of identical desks and nowhere to take a call or talk through an idea, so quiet work and conversation compete for the same space.

Quick check before you commit to a plan:

• Have you listed the types of work each team does in a typical day?
• Is there a place to focus, a place to collaborate and a place to take calls?
• Is acoustic treatment part of the first plan, not an afterthought?
• Does the furniture in each area match the work done there?

If you can tick all four, you’re already ahead of most projects. The rest of this guide covers the decisions that make it work: zoning, workstations, seating and acoustics.

Zoning an Open Plan Space: Focus, Collaboration & Social

Zoning is the single biggest lever you have in an open plan office. It simply means dividing the floor into areas, each built for a different way of working. Most commercial designers use a three-zone model:

1. Focus zone: quiet, individual work.
2. Collaboration zone: team work, informal meetings, video calls.
3. Social zone: breaks, casual conversation, informal connection.

Each zone needs its own furniture. Mixing them sends conflicting signals. A lounge sofa in the middle of a focus zone, for example, tells people “relax here” in a space where others are trying to concentrate.

A simple way to picture the layout:

┌─────────────────────────────────────────────┐
│  WINDOWS / DAYLIGHT                         │
│  ┌──────────────┐                           │
│  │  FOCUS ZONE  │                           │
│  │  benching +  │                           │
│  │  screens     │                           │
│  └──────────────┘                           │
│  ░░░░ bookcase / screen / planting ░░░░     │
│           ┌──────────────────┐              │
│           │ COLLABORATION    │              │
│           │ tables, pods,    │              │
│           │ soft seating     │              │
│           └──────────────────┘              │
│                         ┌─────────────────┐ │
│                         │ SOCIAL ZONE     │ │
│                         │ lounge, café    │ │
│                         │ + KITCHEN       │ │
│                         └─────────────────┘ │
└─────────────────────────────────────────────┘

The idea is a gradient, when it’s quiet on one side, lively on the other, with a physical divider between them. A bookcase, an acoustic screen, or a row of plants all work.

The most common zoning mistake is putting a social area or phone zone right next to the focus zone. It often happens because that’s where there happened to be free space. As a result, people trying to concentrate hear every call and every laugh.

How to zone an open plan office:

• Is each zone clearly separated by a physical element, not just a different carpet?
• Is the focus zone as far as possible from the kitchen, phone areas and main walkways?
• Is the social zone placed where noise is already expected?
• Does each zone contain only the furniture that suits its purpose?

One more point here. Zoning starts at the floor plan stage, before any furniture is chosen. At TNT, we handle this as part of our space planning process, so the layout decides the furniture and not the other way around.

Seating That Works for Open Plan Office Layout

Chairs are the most visible piece of furniture on the floor and the one people use for the most hours. There are three seating types to plan for and each belongs in a different zone.

Task chairs

In an open office space, a chair has to work for many different people, not just one. That’s why the baseline is simple:

• BIFMA certification, so the chair meets recognized commercial standards.
• Full adjustability: seat height, lumbar support and armrest height, width and pivot.
• Commercial-grade fabric, built to handle daily use across years.

The same guidance appears in our ergonomic office furniture guide, but here it’s framed for open space buying. When you’re furnishing a whole floor, one chair must fit tall and short, light and heavy and everyone in between.

Appearance vs. performance

Open plan task chairs are visible from every angle, so it’s natural to want them to match the design of the office. The trouble starts when looks win over ergonomic specification.

When appearance takes priority, the result is consistently the same. Complaints about discomfort arrive within 60 to 90 days.

A better approach is to shortlist chairs that meet the ergonomic baseline first, then choose the style from that list. You rarely have to give up one for the other.

Stools and perch seating

Height-adjustable stools and perch stools (a semi-seated position) suit collaborative tables and standing-height benches. They’re great for quick sessions, but they’re meant for collaboration areas. Don’t use them to replace task chairs in focus areas, where people sit for hours.

Lounge and soft seating

Upholstered lounge chairs, sofas and high-back seating make social and informal collaboration areas feel inviting. High-back options do double duty: they’re comfortable and they help separate one area from another by reducing noise.

Seating checklist:

• Are all task chairs BIFMA certified and fully adjustable?
• Did you check ergonomics first and style second?
• Are stools used only in collaboration zones?
• Do social areas include high-back seating to help with sound?

Open Office Acoustic Solutions

Noise is the most common complaint in open plan office environments and it’s also one of the most fixable. This section covers the furniture-based toolkit you can use when selecting pieces for your floor. If you want the full picture, including building-level solutions, read our full acoustic office design guide.

The good news is that you don’t need a single big fix. Most offices combine a few smaller tools, each handling a different kind of noise.

Acoustics are far cheaper and less disruptive when they’re planned during fit-out. Adding them after people have moved in means working around desks, delivering and installing during business hours and often paying more for a smaller result. For more insights on how to move into a new office successfully, check out our furniture relocation checklist.

Acoustic checklist:

• Do desk screens have real acoustic infill?
• Is there at least one single-person pod for every 8 to 10 desks?

• Are wall panels rated NRC 0.75 or higher?
• Have ceiling baffles been considered for tall or exposed ceilings?
• Was acoustic treatment included in the fit-out budget, not left for later?

How We Approach a Typical Open Plan Project

Here is how a typical open office layout project runs at TNT Commercial.

It starts with questions. We ask how many people you have, which teams will sit together, how each team works during a normal day and when you need to move in. Those answers shape everything that follows.

The process at a glance:

Before you start, have these ready:

• Your current and expected headcount.
• A list of teams and what each does day to day.
• Your target move-in date.
• Any known problems, such as noise or lack of meeting space.

Ready to Plan Your Open Plan Office?

TNT Commercial specifies and installs open plan office furniture for businesses across Charlotte and the Southeast, from floor plan and zoning to workstations, seating and acoustic solutions. Tell us your headcount and timeline.

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