The office you need at each stage, from 10 people to 500

You've closed a Series B, headcount is doubling every six months, and the 3,000-square-foot loft that felt generous now feels tight. Most companies reach this point having treated real estate as an afterthought. In New York, where good space is taken months in advance and a lease negotiation can run 90–120 days, that leaves no time to make a good decision.

Planning by stage fixes it. Each band of headcount has a typical density, a set of features that matter, and one lease right worth securing now for the stage that follows.

Stage 1: Foundation (10–25 people)

An open layout, one or two small meeting rooms and a flexible common area. Flexibility matters more than anything else here. Look for short terms of two to three years with expansion rights, modular furniture and space that needs little build-out. Flatiron and Union Square combine easy access with startup energy.

Secure now: a right of first offer (ROFO) on adjacent space. It gives you first call when neighboring space frees up, without committing early.

Stage 2: Growth (25–75 people)

A mix of open and private space, three to five conference rooms and dedicated phone booths. This is where many companies stumble: growing fast, but not ready for a full floor. Partial floors with expansion options fit this stage, and subleases from larger companies can offer premium build-outs at a discount.

Start doing: a space utilization audit every quarter. Tracking actual against planned occupancy sharpens your growth projections before the next search begins.

Stage 3: Expansion (75–150 people)

Department zones, six to ten meeting rooms, wellness amenities and a reception. You're ready for a full floor, but don't take the first 15,000-square-foot floor that fits. Plan for the three-year trajectory. Taking 20,000 square feet and subleasing the excess can let you grow in place instead of moving again.

Secure now: a blend-and-extend option, so you can add adjacent floors while extending the overall term on better economics.

Stage 4: Multi-floor (150–500 people)

Connections between floors, specialized space such as labs or studios, and executive areas. You now have real negotiating power. Choose the neighborhood for its talent pool and client proximity, and watch commutes: a prestige address that adds 20 minutes or more to the average trip costs you in hiring. Buildings with large floor plates, 15,000 square feet or more, are usually more efficient than boutique properties.

Secure now: a waterfall expansion schedule, taking additional floors on set dates at pre-negotiated economics.

Stage 5: Enterprise (500+ people)

A campus-like environment, options across more than one building, and room for brand expression. The questions become headquarters questions: anchor a new development, or take a naming-rights deal? The task is balancing brand presence against operational flexibility.

Consider: a hub-and-spoke model, with a flagship headquarters and satellite offices for particular functions or teams.

What to check at every stage

Headcount sets the size. Three other things decide whether a space will hold up through the stage:

• How you actually use space. Occupancy sensors, desk and room booking systems and space planning software show real utilization and let you model growth scenarios before you commit. Look at collaboration patterns and how well the current space works, not just square feet per person. With hybrid work, many teams need less than headcount suggests.
• The building's systems. Prioritize high-speed connectivity, capable building systems and a floor plan that can be reconfigured as you grow.
• Energy performance. Efficient, LEED-certified buildings increasingly matter for talent retention and investor relations, and often hold their value better over a lease.

Bring the leadership team in early, too. A space decision affects recruiting, retention and operations, so the plan should reflect the business goals and culture, not just the real estate.

Timing and leverage

Moody's analysis describes a Manhattan market with overall vacancy at historic highs but quality space still competitive. AI companies and tech firms have led a new wave of leasing, and according to CoStar, flexible workspace is becoming a foundation of corporate real estate strategy. Timing can still work in your favor. In the first half of the year, landlords have fresh budgets and want to show leasing momentum, so concessions and flexibility are easier to find. In the second half, year-end pressure can help, especially on space that has sat vacant for six months or more.

Your action plan

1. Map your growthPlot headcount projections for 12, 24 and 36 months.
2. Set space standardsEstablish square-feet-per-person ratios for different roles.
3. Define trigger pointsAgree the metrics that will start a space search.
4. Build your teamEngage real estate advisors 6–9 months before you need to move.
5. Develop optionsEvaluate three to five viable alternatives to strengthen your negotiation.

For how to size each move without taking too much or too little, see how to plan office space for growth. The NYC Comptroller's report on the office market is a useful read on where the wider market is heading.