Office Cost per Employee: How to Build a U.S. Occupancy Cost Model

Calculating your office cost per employee is a more complete number than the plain asking rent or price per square foot, because it adds operating expenses, build-out and any flexible space on top of rent, then spreads the total across your team.

An occupancy cost model builds that number in order: start from a planned office footprint, add rent cost based on an average annual rent rate, add tenant-paid operating expenses, add the annualized build-out net of any landlord contribution, add flex or overflow space, then divide by headcount for the final cost per employee or by planned seats for cost per seat.

The footprint itself, how many square feet you actually need, is an input to this model, not its subject. If you haven’t settled that yet, the section below points you to how to work it out.

What Is Office Cost per Employee?

Office cost per employee, also called occupancy cost per employee or office cost per person, equals the total annualized occupancy cost divided by the number of employees that space supports, expressed as a normalized average annual figure for comparing offices and lease terms.

Office cost per employee is the number that reflects your average annual cost to house one person over the lease term, and it’s the number that lets you compare offices, budget for headcount growth or judge whether a lease renewal makes sense.

What Should an Office Occupancy Cost Model Include?

Before You Start: Use Your Planned Office Footprint

This model starts from the space you plan to lease. That footprint might come from an existing office brief, a shortlisted listing, a broker or a space-planning exercise you’ve already run.

If you haven’t settled on a footprint yet, the short version is: peak attendance sets how many seats you need and seats multiplied by your square-feet-per-seat target (accounting for desk-sharing ratios, meeting rooms and growth allowances) sets the footprint. Establish that figure separately before applying this cost model.

The worked example later in this guide uses a 50-person company with 45 planned seats and 8,550 square feet as a given input.

Step 1: Calculate the Average Annual Rent Rate

A headline asking rent rarely represents the final figure once you take into account factors like free rent or scheduled increases. This guide uses a simplified, straight-line average annual rent rate for this tenant model: total scheduled rent paid over the lease term, net of any free-rent months, divided by lease years and by rentable square feet.

Average annual rent rate = total scheduled rent paid over the lease term ÷ lease years ÷ rentable square feet.

For example, a $75.00 per square foot quote with 3 months of free rent in year one and 3% annual increases from year two, on a 10-year term, works out to about $84.10 per square foot a year on average, roughly 12% above the quoted rate, once the abatement and escalations are both factored in.

Step 2: Add Tenant-Paid Operating Expenses

What you owe beyond rent depends entirely on lease structure. A full-service gross lease folds most operating costs into the quoted rent. A modified gross or base-year lease covers costs up to an agreed baseline, then passes only the increases above that baseline to you. A triple net (NNN) lease bills rent separately from property taxes, insurance and CAM, in full.

Step 3: Add Build-Out and Subtract TI Allowance

Tenant-funded build-out is what’s left after the landlord’s contribution: build-out budget minus TI allowance. Spread that remainder over your lease term to get an annualized build-out cost.

Build-out budgets combine hard costs (construction: walls, flooring, ceilings, HVAC) and soft costs (architecture, engineering, permits, project management), plus furniture and IT if your company includes them in scope. Treat a hard-construction figure as a floor, not the whole number: average hard construction costs for a corporate build-out in New York City ran $212.59 per square foot in 2025, according to Commercial Observer, before soft costs are added.

A TI allowance reduces the portion you fund, rarely covering all costs outright. Newmark’s Q1 2026 U.S. office market report notes that TI allowances in major markets remain elevated versus 2015-2019 levels, although Manhattan TI allowances in 2026 are nearly unchanged from 2023.

Step 4: Add Flexible or Overflow Space

Flexible space is a separate, variable cost line, and its three common pricing models aren’t interchangeable: a private office on a monthly membership, a coworking membership and true on-demand day-pass access all price differently and shouldn’t be blended into one rate.

Model it either as monthly capacity x monthly rate x months used, or as expected seat-days x day rate, matching whichever product you go for. Hubble’s New York City Office Report Q2 2026 found that the average asking price for a private-office desk in Manhattan was $821 per month, based on active Hubble listings during the reporting period. Note that this is a monthly private-office rate, not a day-pass or coworking rate. For current inventory, browse office space in Manhattan or search other major markets in the U.S..

Not every company needs a core lease at all. Some run their entire footprint on flexible space rather than signing a primary lease, in which case the flex line becomes most of the model, and the rent, OpEx and build-out steps are no longer a factor.

Step 5: Calculate Total Occupancy Cost, Cost per Employee and Cost per Seat

The pieces above are a mix of per-square-foot rates and totals, so keep the units straight when combining them:

Annual rent cost = average annual rent rate × rentable square feet.
Annual tenant-paid operating cost = incremental operating expense rate × rentable square feet.
Annualized tenant-funded build-out, if build-out and TI are total dollar amounts = (total build-out cost − total landlord/TI contribution) ÷ lease term.
Annualized tenant-funded build-out, if build-out and TI are quoted per square foot (used in the worked example below) = (build-out $/sf − TI $/sf) × rentable square feet ÷ lease term.
Annual flex cost = monthly flex cost × months used, or seat-days × day rate.

Total annualized occupancy cost = annual rent cost + annual tenant-paid operating cost + annualized tenant-funded build-out + annual flex cost + any other costs your company includes in scope.

Office cost per employee = total annualized occupancy cost ÷ employees supported.

Cost per seat (or cost per desk) = total annualized occupancy cost ÷ planned seats.

The two per-unit figures differ whenever seats and headcount differ, which is any time desk sharing is in place. Cost per employee tells finance what the current team costs to house; cost per seat tells whoever manages the space what each physical desk is costing, and it moves if you add sharing without touching headcount at all.

Worked Example: Office Cost per Employee for a 50-Person Company in Manhattan

The example below uses one illustrative office quote: A single lease structure and a single set of terms, built from one deal rather than blended from unrelated markets or years. It’s built on Manhattan inputs but it should only be relied on as an example and may not be representative of live prices or the U.S. market as a whole.

Because lease costs change from year to year, this worked example converts the lease into a normalized, average annualized occupancy cost for comparison purposes. It averages scheduled rent over the lease term using Step 1’s method, spreads tenant-funded build-out evenly across the term, and treats the $10.00 per square foot operating-expense figure and the flex desk cost as constant average annual assumptions for modeling simplicity. Actual cash cost in any given year will differ from this average; see the Year 1 vs. full-term section below.

Inputs: 50 employees supported, 45 planned seats, 8,550 square feet, carried over as a given from the sizing step above. Quoted rent $78.00 per square foot in Manhattan, modified gross with a base year, 3 months free rent, 3% annual escalation, 10-year term, giving an average annual rent rate of $87.47 per square foot using Step 1’s method. Tenant-paid operating expenses: $10.00 per square foot a year, an illustrative average annual assumption representing the increases above the base year rather than a full CAM bill. Build-out: $212.59 per square foot hard cost (based on Commercial Observer’s 2025 figures) plus $35.00 per square foot in soft costs, illustrative, for $247.59 all-in; a $60.00 per square foot TI allowance, treated here as an illustrative negotiated assumption rather than a market benchmark, leaves $187.59 per square foot tenant-funded, annualized over the 10-year term. Flex: 3 flexible desks at $821 per desk a month, per Hubble’s New York City Office Report Q2 2026, held constant as an annual assumption for modeling simplicity.

All figures above are calculated at full precision before rounding for display; the totals reconcile with the component rows to the nearest dollar. Neither per-unit figure is a market benchmark. Both are outputs of this specific set of assumptions, and both will move if headcount, footprint, lease term or deal terms change.

How Sensitive Is Office Cost per Employee to Your Assumptions?

The worked example above is one bundle of assumptions. To see which inputs move the needle, this section changes one variable at a time from that base case, holding everything else constant, rather than bundling several changes together.

TI contribution moves in the opposite direction from the other three variables. Footprint and quoted rent move the number the most in dollar terms over these ranges.

How to Compare Two Office Options Using the Same Cost Model

A lower asking rent doesn’t necessarily mean a lower occupancy cost. The comparison below holds footprint (8,550 sf), seats (45), employees (50), lease term (10 years), annual rent escalation (3%), build-out all-in cost ($247.59/sf hard plus soft) and flex (3 desks at $821/month) identical between the two buildings, so the only differences are quoted rent, lease structure, free rent, operating expenses and the TI allowance. All figures are illustrative.

Building 2’s rent is about 10% lower on paper, but its NNN structure and smaller TI allowance push its total occupancy cost about 5.6% higher than Building 1’s. The nominally cheaper quote isn’t the cheaper office once lease structure and build-out are modeled the same way for both. Run any two shortlisted options through this same table before comparing headline rents.

Annual Office Budget vs. Full Lease-Term Cost

A Year 1 cash budget and a lease’s average cost over its full term answer different questions; a lower Year 1 number isn’t an inaccurate Year 1 budget. In Building 1 above, net cash rent in year one, after 3 months free, comes to about $500,175, which is the right figure for a Year 1 cash budget. By year ten, after nine years of 3% escalations, rent alone reaches roughly $870,153. The $747,854 average annual rent cost used in the model is the level, averaged figure across the full ten years.

How Hubble Can Help

The model above gets you a defensible office budget per employee. The next step is replacing its assumptions, rent, TI, operating expenses, with real quotes for real buildings.

Frequently Asked Questions

Office cost per employee is only as reliable as the assumptions behind it. Replace the illustrative inputs above with your own footprint, quote and deal terms, and the same model holds.