What a Startup Office Actually Costs: A Designer’s Budget Breakdown by Stage

Why No One Can Give You a Straight Answer on Office Design Cost

The most common question we hear before an office project starts isn’t about furniture or floor plans. It’s some version of: what is this actually going to cost?

Here’s the hot take: nobody can answer that question until you’ve made four decisions that have nothing to do with design. Most founders make all four by default, under deadline pressure, without realizing those choices just set the ceiling on everything else. The square footage matters less than you think. The decisions matter more.

This is where most office design content fails the startup audience. You get either a vague “it depends on your needs” non-answer or a per-square-foot average so broad it could mean anything from a WeWork-style raw conversion to a fully designed headquarters. Neither one helps you walk into a lease negotiation or a contractor conversation knowing what you’re actually committing to.

We work with founders and ops leads who are building real offices for the first time, usually on a timeline that’s tighter than it should be, often with investors or clients who will walk through that space and form an opinion about the company before anyone says a word. The budget conversation is the design conversation. Get the sequence right and the number becomes a plan. Get it wrong and you’re retrofitting decisions that cost twice as much to fix as they did to make.

One number worth having before we get into it: a fully designed first office with a firm handling everything end to end typically runs $50,000 to $150,000 in design fees alone, before a single chair is ordered. If you're looking for designer guidance without the full-service price tag, that number looks a lot different. Knowing which kind of help you actually need is itself one of the decisions worth making early.

The Four Decisions That Determine Your Office Design Budget

Before anyone picks a paint color or argues about standing desks, four decisions will determine what your office actually costs. Most founders don’t recognize them as decisions at all. They look like logistics when they’re actually the four variables that set the ceiling on everything else.

TI versus furniture-forward.

Tenant improvement allowance is the money your landlord contributes toward buildout in exchange for you signing the lease. If you negotiate TI into your deal, you unlock the ability to touch the ceiling, the floors, the walls, the electrical. If you don’t, or if your lease doesn’t offer it, you’re working with what’s already there and making up the difference with furniture, rugs, acoustic panels, and lighting you can take with you when you leave. TI-forward offices have a higher ceiling on what they can achieve, especially acoustically. Furniture-forward offices move faster and stay portable. Neither is wrong. But walking into a lease without knowing which one you’re doing is how you end up with a $40,000 furniture budget in a space that needed a $15,000 lighting upgrade first.

New versus commercial secondhand.

The commercial secondhand market is one of the most underused resources in startup office design, and it’s genuinely good. Herman Miller runs an official refurbished program with a five-year warranty on restored Aeron chairs at a fraction of new pricing. Office liquidators move high-quality Steelcase, Knoll, and Haworth inventory constantly, especially in cities with active commercial real estate churn. For task seating in particular, a well-sourced secondhand commercial chair will outperform a new residential chair at the same price point every time. The caveat: secondhand requires lead time and flexibility on finish and configuration. If you need 30 matching chairs in a specific fabric in six weeks, new is your only option. Plan ahead and the secondhand market rewards you. Don’t plan ahead and you’ll pay new prices under deadline pressure.

DIY versus designer-directed.

This one is less about ego and more about error cost. A designer costs money upfront. Buying the wrong acoustic treatment, specifying a lighting package that makes everyone look like they’re being interrogated, or configuring a floor plan that works on paper and fails the moment forty people are actually in it costs more, and it costs it later when you’re already over budget and fully moved in. The ROI on design input is clearest on the decisions that are expensive to undo, which is most of them. If this is your first office build, that calculus tilts even further toward getting help early. You don’t know what you don’t know yet, and the office will teach you at full retail.

Rushed versus phased.

The most expensive offices we see are almost never the biggest ones. They’re the ones done all at once under pressure, where every decision gets made on deadline and nothing gets made twice. Phasing a startup office build isn’t a compromise, it’s a strategy. It gives you better decisions, a more legible budget, and the ability to spend the second phase with actual knowledge of how the team uses the space. It also gives you room to grow into the office rather than designing for a headcount you don’t have yet and a culture you’re still figuring out. More on this in the phasing section, but the short version is: plan for where you’re going, not just where you are.

Startup Office Budget Breakdown by Stage: Lean, Established, and Growth

This is the section most office design content skips entirely, or buries in ranges so wide they’re functionally useless. We’re going to do it differently. These three tiers are built around real fit-out cost data from JLL’s 2025 U.S. and Canada Office Fit-Out Cost Guide, and they’re intentionally wide within each tier because the variables are real. A 5-person office in Phoenix with secondhand furniture and no contractor is a very different project from a 15-person office in San Francisco with a TI package, and both live in Tier 1. What the ranges give you is a realistic anchor before you walk into a lease negotiation or a contractor conversation, not a fixed number you can hold anyone to. The goal throughout all three tiers is the same: design for where you’re going, not just where you are today.

Tier 1: The Lean First Office (5 to 15 people)

Furniture-forward, no TI, no contractor. Realistic budget range: $50,000 to $150,000. The money goes to task seating, desks, a basic meeting table, a rug or two, and a starter round of acoustic panels on the most reflective walls. Done well it can feel intentional and work reasonably well for a small team. Done poorly it looks like a coworking space someone forgot to finish.

The typical regret at this tier isn’t the total spend. It’s the seating. Founders who cut corners on task chairs are almost always replacing them within 18 months at full price, while their team is already in the office and already complaining. Buy the good chairs once. Everything else at this tier can be upgraded incrementally.

What it doesn’t cover: lighting upgrades, ceiling acoustic treatment, focus pods or phone booths, anything that requires a contractor. If your space has a fluorescent overhead grid and bare concrete floors, this budget will soften the problem but won’t solve it. And if you’re already thinking about hiring past 15 people in the next 12 months, design for that headcount now. Reconfiguring a space you just finished is an expensive lesson in not planning ahead.

Tier 2: The Established Team (15 to 30 people)

Modest TI or light contractor work, with infrastructure starting to come in. Realistic budget range: $150,000 to $350,000. This is where the budget starts to include the things that make a space actually perform, not just look occupied. A modest TI package opens the door to lighting upgrades, ceiling acoustic treatment, and a kitchen area that people actually want to spend time in. One or two phone booths land here too, which changes the calculus for anyone who needs to take calls privately during the day, which at 25 people is a meaningful chunk of the team.

The typical regret at this tier is conference room AV. Teams at this stage almost always buy AV equipment before they’ve figured out how they actually run meetings, which means they spec for a use case that turns out to be wrong. Our consistent advice: buy the minimum viable AV setup at move-in and upgrade once you’ve been in the space for three months and know what you actually need.

What it doesn’t cover: a fully designed reception or first-impression zone, branded elements, the identity and culture layer that makes the space feel like the company rather than a nice generic office. If you’re regularly bringing in clients or candidates, that gap will start to show faster than you’d expect.

Tier 3: The Growth-Stage Build (30 to 50 people)

Fuller TI package, designed throughout, and planned for the next headcount milestone not just the current one. Realistic budget range: $350,000 to $600,000. At this scale the office is doing real work for the company, setting a frame for every candidate interview, every client visit, every all-hands. Your investors and clients are walking through that space and forming an opinion about the company before anyone opens a laptop, and the design decisions carry more weight because more people are experiencing them every day.

This tier includes everything in Tiers 1 and 2 plus a designed reception, multiple collaboration zones, branded elements, and the acoustic and lighting infrastructure that makes the space perform as well as it looks. If you’re at 30 people and growing fast, the smartest thing you can do is design for 50 now. The cost delta between designing for your current headcount and designing for where you’ll be in 18 months is small. The cost of doing it twice is not.

The typical regret here is sequence-related rather than budget-related. Growth-stage offices that spend heavily on visible brand elements before the functional infrastructure is solid end up with a beautiful space that’s too loud, too bright, and configured for a headcount that’s already changed. Nail the bones first. The brand layer is easy to add. Acoustic remediation after the fact is not.

One honest note: at this scale you’ll have a contractor, a project manager, and a furniture dealer in the mix alongside a designer. The highest-leverage move you can make is getting the designer in the room first, before any of those other conversations start.

Where to Spend and Where to Save on Office Design

If there’s one section of this post worth screenshotting and sending to your co-founder, this is it. The spend-vs-save decision is where most startup offices go wrong, not because founders are careless with money but because the things that are easy to buy first are rarely the things worth spending on first. Here’s the framework we use with every client.

Spend on task seating.

People sit in these chairs for eight hours a day. The math on buying right the first time is straightforward, and we already covered the regret data in the tier section above. This is the least glamorous line item in the budget and the most important one. Herman Miller’s official refurbished program is a genuinely good option if new pricing is out of reach at your current tier, with a five-year warranty on restored Aeron chairs at a fraction of new cost.

Spend on acoustic treatment.

The single most regretted underspend across the startup office projects we see. An open plan with hard floors, bare walls, and an exposed ceiling isn’t just loud, it’s cognitively exhausting in a way that accumulates over the course of a day and shows up in your team’s energy by 3pm. If you need a deeper dive on what to prioritize and in what order, the startup office acoustics guide we put together covers the full treatment toolkit by budget and impact. Spend here before you spend on anything visible.

Spend on lighting.

The overhead fluorescent grid is cheap to install and costly to live with. It’s the single fastest way to make a space feel institutional, and it’s the first thing every visitor notices even if they can’t articulate why. Lighting is also one of the most expensive things to retrofit once the ceiling is finished, which makes it one of the clearest arguments for getting a designer involved before the contractor starts work.

Spend on the first-impression zone.

The entrance and reception area sets every client and candidate’s frame before they say a word. At Tier 1 this doesn’t require a designed reception desk and a custom logo wall. It requires intention: a cohesive material story, good light, and a clear sense that someone thought about this space. The cost of doing it well is low. The cost of a first impression that undersells the company is harder to quantify but very real, especially if you’re in a hiring push or closing a funding round.

Spend on baseline IT infrastructure.

Cabling, WiFi coverage, and basic security are not optional and not the place to cut corners. A startup office with dead zones, a single shared network, and no structured cabling plan is a productivity problem that compounds every day. Get this scoped and installed properly from the start. It’s invisible when it works and absolutely maddening when it doesn’t.

Save on branded wall graphics.

Do these later, once you know what the space actually needs to say and once the team has been in it long enough to have an opinion. Branded graphics applied before the culture has settled have a way of feeling slightly off within a year, and they’re not cheap to redo.

Save on conference room AV.

Buy what the team needs right now and upgrade in three to six months once you know how you actually run meetings. We said it in the tier section and we’ll say it again because it’s the most consistently ignored advice we give.

Save on smart office technology.

This is where the love of tech works against founders more than anywhere else in an office build. Occupancy sensors, app-controlled lighting, integrated room booking systems, and AV ecosystems that require a dedicated IT person to troubleshoot are genuinely compelling products that make a lot of sense at 200 people. At 20 people they’re an expensive solution to a problem you don’t have yet. Buy the infrastructure that supports the team you have today and leave room in the budget for the technology layer when the headcount actually justifies it.

Save on decorative accessories.

Art, plants, throw pillows for the lounge, the finishing layer that makes a space feel lived in rather than staged. This is the easiest category to add over time and the worst one to front-load. Get the bones right first and the accessories will tell you what they should be.

The through-line across all of it: save on the things that are easy to add later, spend on the things that are expensive to retrofit. The office that gets this sequence right doesn’t need a redesign in 18 months. The one that gets it wrong almost always does.

How to Phase a Startup Office Build Without Blowing the Budget

The most expensive startup offices we see are rarely the biggest ones. They’re the ones done all at once under pressure, where every decision gets made on deadline and nothing gets reconsidered. Phasing a startup office build isn’t a compromise or a sign that the budget isn’t there. It’s a strategy, and in most cases it produces a better outcome than trying to do everything at once.

The logic is simple: the decisions you make in Phase 1 will be better than the decisions you would have made before you moved in, and the decisions you make in Phase 2 will be better than the ones you made in Phase 1, because by then you actually know how the team uses the space. Phasing turns the office into something that evolves with the company rather than something that gets built once and slowly stops fitting.

Phase 1: Infrastructure and seating.

The things that affect every person every day. Chairs, desks, baseline IT infrastructure, and whatever acoustic and lighting work your budget allows. This is the non-negotiable layer, the foundation everything else sits on. Get this right before you spend a dollar on anything visible. A well-lit, acoustically decent office with good seating and reliable WiFi will outperform a beautifully branded space with fluorescent lighting and a network that drops on video calls every single time. What’s worth saying plainly: Phase 1 is where a lot of startup offices stop. Build Phase 2 into the plan before you move in and treat it as a commitment rather than a someday. Before you move into Phase 2, ask the team what’s working and what isn’t. They’ve been living in the space. They know.

Phase 2: Environment quality.

Once the team has been in the space for two to three months you’ll know exactly what’s working and what isn’t. Phase 2 is where you address it. Ceiling acoustic treatment if the room is still too loud. Lighting upgrades if the overhead grid is grinding people down. A phone booth or focus pod if the open plan is making private calls impossible. A kitchen upgrade if nobody is spending time in there. This phase is informed by lived experience rather than pre-move-in assumptions, which makes every dollar in it more efficient than a dollar spent in Phase 1.

Phase 3: Identity and culture layer.

Branded elements, art, the finishing details that make the space feel like the company rather than a well-designed generic office. This is the layer most founders want to do first and the one that benefits most from being done last. By Phase 3 you know what the company actually is, what the culture looks like in practice, and what the space needs to communicate to the people walking into it. That knowledge is worth more than any mood board assembled before move-in day. Just make sure you actually know who you are before you put it on the walls. Startups change, sometimes dramatically, and a custom mural celebrating a product roadmap you’ve since pivoted away from ages in interesting ways.

The other thing phasing gives you is room to grow. A Phase 1 build designed with Phase 2 and 3 in mind leaves intentional flexibility in the layout, the infrastructure, and the budget. It accounts for the hiring that’s coming rather than just the headcount that’s here. The startups that get this right are the ones that move into their Phase 1 office and feel like it has room to become something, rather than moving into a finished space that stops fitting the moment the next round closes and the team doubles.

A Startup Office Design Budget That Actually Holds Up

Here’s the thing nobody tells you before your first office build: the budget conversation and the design conversation are the same conversation. Founders who separate them, who lock in the lease, set the budget, and then call a designer, are already working around constraints they didn’t have to create. The sequence matters as much as the number.

The other thing worth sitting with is that the office is one of the few investments a startup makes that every single person on the team experiences every single day. The product gets used by customers. The office gets used by the people building it. That’s not a reason to overspend. It’s a reason to spend deliberately, on the right things, in the right order, with enough flexibility built in for the company you’re becoming rather than just the one you are right now.

Before you tour a single space, write down two things: your honest headcount projection for the next 18 months, and whether you're going TI or furniture-forward. Those two answers will tell you more about your budget than any per-square-foot estimate, and they'll make every conversation after that, with a landlord, a contractor, or a designer, significantly more productive.

If you’re at the beginning of that process or somewhere in the middle of a build that’s drifted from the plan, we’d love to talk. Studio Lou works with founders and ops leads from early budget planning through to a finished space that actually performs.