There's no single right answer
If you're searching "Gensler interior design" or "Gensler company size," you're probably trying to decide whether Gensler belongs on your shortlist for an office project. I get it—I've been exactly there.
I'm the office administrator for a 400-person tech company. I manage purchasing—roughly $1.5M a year across 15 vendors—and since 2020 I've overseen three office interior design projects from the buyer's side. That means I've watched companies pick design firms for the wrong reasons. Here's the honest answer: whether Gensler is right for you depends on the scenario. There's no universal yes or no.
If you're evaluating Gensler for a headquarters move, a complex renovation, or an office-to-residential conversion study, you'll find something useful here. If you're picking finishes for a single conference room, this isn't the article for you—and honestly, you don't need Gensler for that either.
What Gensler's company size actually means
Let me start with the number people keep asking about. Gensler has roughly 6,000–7,000 employees across more than 50 offices globally, based on their published data. That scale cuts both ways.
It means they have specialists for nearly everything you can think of: workplace strategy, interior design, construction management, building performance analysis, even newer practice areas like office-to-residential conversion. On a complicated project, that in-house depth is the difference between one accountable team and three separate consultants who blame each other when things slip.
But it also means your project is one among thousands. The firm you're hiring isn't the firm you meet in the pitch—it's the specific team they assign. I learned that lesson the hard way (details below).
Scenario A: Small, straightforward refresh
If your project is a single floor or a one-off space under 10,000 sq ft, I'd honestly point you toward a strong regional firm. Gensler can absolutely do small projects well—their retail interior design work proves that. But the overhead structure of a global firm adds layers that a small budget absorbs poorly.
In 2022, we renovated about 4,500 sq ft for our sales team and went with a regional design-build outfit. Prices were reasonable, response times were fast, and we were a big fish in their pond. The downside showed after move-in: a few awkward layout corners and a decision to cheap out on acoustic panels that I'm still getting complaints about. But overall, it was the right level of firm for the job.
The lesson: match the scale of the firm to the scale of the problem. Bring a global firm into a small project and you're paying for capacity you won't use.
Scenario B: Large headquarters or complex renovation
In 2023, we consolidated three Austin offices into a 90,000 sq ft headquarters. That project changed how I think about firm size.
The Gensler proposal came in about 12% higher than a local firm's bid. My first reaction was to push back—I'm responsible for procurement, so cost is my default filter. But the local firm was planning to subcontract most of the work anyway, while Gensler had interior design and construction management in the same house. We decided to pay for that integration.
Two things stood out. First, their workplace strategy team used data from their own previous projects to validate (and improve) our hybrid-work assumptions. A local firm that's done two or three workplace projects simply doesn't have that kind of data. Second, the design and construction teams were clearly used to collaborating. Change orders barely happened. The few that did had clear justifications, which feels almost weird to say out loud.
The move-in itself went smoothly too. Furniture arrived on schedule, which in my experience is rarer than it should be. Our employees noticed the light, the acoustics, and the meeting room availability. They didn't notice the design process—which is exactly how it should be.
There's something satisfying about a project that runs too smoothly. I kept waiting for the ball to drop and it never did. To be fair, I have mixed feelings about big firms in general—they're not always quick to respond, and you're never their only client. But on a project where coordination complexity is high and failure is expensive, the institutional infrastructure wins.
Scenario C: Office-to-residential conversion
If you're sitting on underutilized office space, you're in a completely different category. Office-to-residential conversion is not a normal interior design project. The code issues alone are brutal, floor plates are often too deep for residential units, mechanical systems need complete rework, and cities keep changing their approval processes. You don't hand this to a generalist design firm and hope for the best.
This is where a firm like Gensler has a real edge, in my opinion. They've been doing visible research and actual conversion projects in cities with serious vacancy problems. That experience matters because the field is young—only a handful of firms have genuine conversion track records.
Here's the part that surprised me: an experienced conversion team will also tell you when a building shouldn't be converted at all. That honesty is half the value. A smaller firm that needs your fee is more likely to tell you what you want to hear.
How to know which scenario you're in
This checklist is the practical version of everything I've learned from two good projects and one expensive miscalculation:
- What's the real budget? Below $200,000 total, the infrastructure cost of a global firm is too heavy. Look at regional leaders instead.
- Which named people are actually on the project? If the firm can't tell you who the senior designer is and who handles day-to-day communication, that's a red flag—at any size firm.
- How complex is the work? The more unusual the project—conversions, code-heavy spaces, historic buildings—the more you benefit from deep benches and prior case studies.
- What's the cost of failure? A three-month delay is annoying if you're redoing branding colors; it's a crisis if your lease is expiring and the new headquarters isn't ready.
If you're still on the fence, that's okay. The industry is changing quickly—what was best practice in 2020 isn't necessarily what you should do in 2025. Just make sure the decision is based on the project's actual needs, not the reputation of the firm.
And my expensive lesson, in case it helps (skip this if you're already convinced): back in 2021, I recommended a firm that came in $80,000 below Gensler for a floor refresh. I saved money on paper. Then their subcontractor's drawings failed permitting because the stair egress calculations were wrong. Two months disappeared. The reorder plus expedited fees landed above Gensler's original quote. On top of that, I fielded about 40 hours of complaints from people whose workspace was suddenly delayed.
My assumption was that "plenty of firms can do an office buildout." That's true—in most cases. The part I got wrong is that a significantly cheaper bid is usually cheap for a reason: fewer resources, less process maturity, thinner teams. Sometimes those savings are real. Sometimes they're just deferred costs you'll pay in delays and rework.
Bottom line
Gensler's company size and interior design expertise make them a strong fit for large or complex projects—especially if you need integrated construction management or specialized work like conversions. For small, repeatable projects, a regional firm will serve you better for less money.
If you have a decision in front of you right now (grab your project scope): figure out which of the three scenarios best matches, then look at the team they'd assign and the total cost—not just the base fee. The base fee is the number on the proposal. The total cost is that plus delays, rework, and the time you'll spend handling internal complaints. That's the number that matters.
