What Does Office Space Actually Cost in Northern Virginia?

If you search for office space in Tysons, you will find a number very quickly. Something like $38 per square foot. It looks like a price. It is not a price.

That number is the starting point for a calculation with about nine other inputs, several of which are larger than you expect and most of which are never quoted to you up front. I have watched capable executives sign leases believing their occupancy cost was one number and discover in year three that it was meaningfully higher. Not because anyone deceived them, but because nobody walked them through what the quoted rate does and does not include.

This is that walkthrough. By the end you will be able to build a real annual cost for a real space, and you will know which questions to ask before you tour anything.

Start with the face rent

Across Northern Virginia, Cresa put the average office asking rate at $36.15 per square foot in the second quarter of 2026, with Class A averaging $40.04 and Class B at $31.23. Newmark's read of the same market was $38.27. Those differences are methodology, not disagreement, and I have written before about why the brokerage reports never quite match.

Submarket matters far more than the regional average:

Arlington: average asking $39.08, Class A $40.39, Class B $33.09.

Tysons: average asking roughly $38, Class A $38.09, Class B $38.55.

Reston: average asking $30.88, Class A $35.10, Class B $27.59.

Arlington and Reston figures reflect full-year 2025; Tysons reflects 2026 listings. Class C across Virginia averaged $19.12.

Arlington is the most expensive submarket in Northern Virginia and also carries substantial vacancy, roughly 19.5 percent. High price and high vacancy coexisting is not a contradiction. It tells you the inventory is bifurcated: a small number of very good buildings holding rate, and a large amount of older product that is not really competing.

In Tysons, Class B asks slightly more than Class A. That is not a typo and it is not normal. It usually means the Class A set includes older commodity towers dragging the average down while the Class B set skews toward well-located, recently repositioned buildings. A class label is not a substitute for looking at actual buildings.

Face rent also almost always escalates annually, typically 2.5 to 3 percent. On a ten-year lease, a 3 percent bump compounds your year-one rate by roughly 30 percent by the final year. Always model the average over the term, never year one.

Square feet of what, exactly?

You are quoted a rate per rentable square foot. You occupy usable square feet. The difference is the load factor, your proportional share of lobbies, corridors, restrooms and mechanical space.

In Northern Virginia, load factors on multi-tenant floors commonly run 12 to 18 percent, and full-floor users generally see less. On a 4,000 rentable square foot suite at a 15 percent load, you have roughly 3,480 usable square feet to actually put desks in.

This is the single most under-examined number in office leasing. Two suites quoted at the same rate with load factors of 12 and 18 percent differ by roughly 5 percent in real usable space per dollar, and nothing in the marketing package will point that out. Ask for the load factor in writing, and ask whether the building has been re-measured recently and under which BOMA standard.

What is included in the rate, and what is not

Three structures dominate, and the same building can quote differently to different tenants.

Full-service gross. The quoted rate includes operating expenses, real estate taxes, utilities and janitorial. This is the most common structure for multi-tenant office in Northern Virginia. But included means included in the base year only.

Base year and expense escalations. Your first year establishes a baseline of building operating costs. From year two forward you pay your pro-rata share of the increase over that baseline. If building operating expenses are $14 per square foot and rise 3 percent annually, you are absorbing roughly $0.42 in year two, and by year five you are carrying about $1.76 per square foot in escalations that were never in the quoted rate.

Two provisions matter here. First, the base year should be a full calendar year that reflects a fully occupied, fully assessed building. A base year set during lease-up, or before a reassessment, is artificially low, which quietly inflates every subsequent year's escalation. Second, the gross-up provision. If the building is 70 percent leased, the landlord should gross up variable expenses to what they would be at 95 percent occupancy when setting your base year. Without it, your base is understated and you pay for the building filling up.

Triple net (NNN). The quoted rate covers rent only; you separately pay your share of taxes, insurance and common area maintenance. More common in flex, medical and retail than in multi-tenant office. A $28 NNN rate with a $13 expense load is a $41 deal. Always ask for the current expense estimate and the last two years of actuals.

Modified gross. Some expenses in, some out. There is no standard definition, so the only way to know what you are agreeing to is to read the exclusions.

One clause worth naming: audit rights. You should have the right to inspect the landlord's expense reconciliation, with a reasonable notice period and a provision that the landlord pays audit costs if an overcharge above a stated threshold is found. Most tenants never exercise it. Having it changes how carefully your statement gets prepared.

The Northern Virginia line items nobody mentions

This is where local knowledge changes the math, and where a national cost calculator will mislead you.

Real estate taxes flow through your rent, and Fairfax County taxes commercial property at a higher rate than residential. For 2025 to 2026, the county's commercial real property rate is $1.250 per $100 of assessed value, against $1.125 for residential.

Then there are the special districts. Fairfax County levies additional commercial and industrial transportation taxes on top of the base rate: $0.14 per $100 in the Dulles Rail Phase II district, $0.12 in the Route 28 district and $0.09 in the Dulles Rail Phase I district.

If your building sits inside one of those districts, and much of the Tysons, Reston and Route 28 office inventory does, that surcharge is embedded in the building's tax bill, which flows into operating expenses, which flows into your escalations. It is a real and permanent difference in occupancy cost between two otherwise comparable buildings a few miles apart, and it is essentially never discussed on a tour.

Parking is a separate negotiation and a real budget line. In garage-served submarkets like Tysons and Arlington, unreserved spaces are typically charged monthly per space, with reserved spaces at a significant premium. Surface-parked buildings in Fairfax Center or along Route 28 more often bundle parking at no additional charge. Get three things in writing: the ratio of spaces per 1,000 rentable square feet, the current monthly rate for reserved and unreserved, and whether the landlord can raise that rate during your term. An uncapped parking rate on a ten-year lease is an open-ended obligation.

Also budget for after-hours HVAC, which is usually billed hourly and should be capped in the lease, separately metered electrical if your use is heavy, and any BPOL or business personal property exposure. Fairfax County's business personal property rate is $4.57 per $100 of assessed value, and BPOL for professional services runs $0.31 per $100 of gross receipts.

The one-time costs

Annual occupancy cost is only part of the picture. Moving into space carries capital costs that often exceed a full year of rent.

Build-out above the allowance. Avison Young's Northern Virginia work found tenant improvement allowances averaging $48.03 per square foot across all classes over a five-year period, with Trophy and Class A product averaging $69.18. Those are averages, and averages hide a lot. Standard open-plan office in second-generation space may come in at or near the allowance. Medical, dental, lab and secure space routinely run well beyond it, and the overage is yours. My guide to tenant improvements covers what an allowance does and does not cover.

Gap rent. If your new space needs five months to design, permit and build, and your current lease has four months left, you are paying for both. Plan the timeline backward from your expiration, not forward from today. If your lease expires in 2027 or 2028, you are already inside the window where this matters.

Furniture, cabling, AV and IT. Rarely covered by the allowance in any meaningful amount, and easy to underestimate by six figures on a mid-sized floor.

Security deposit or letter of credit. Typically a few months of rent, and higher for younger companies or heavy build-outs. A letter of credit ties up borrowing capacity. Negotiate a burn-down schedule that reduces it as you perform.

Moving, downtime and change management. Real costs, almost never budgeted.

What comes back to you

The costs above are one side. Concessions are the other, and in the current market they are substantial.

Free rent. Nationally, CBRE found free rent averaging 8.9 months in 2024 across major markets, alongside tenant improvement allowances averaging $87.51 per square foot. Those are national figures on longer terms, but they establish the order of magnitude. Concessions are not a rounding error, they are a major component of deal value.

The right way to compare offers is net effective rent: total rent over the term, minus free rent, minus the allowance, divided by the term and the square footage. A $42 rate with ten months free and $80 in TI can easily beat a $36 rate with two months free and $25 in TI. Face rent comparisons will lead you to the wrong building.

And if you are under 30,000 square feet, check the sublease market before you negotiate. Cresa counted roughly 3 million square feet of sublease space across 253 Northern Virginia listings in the second quarter of 2026, with about 66 percent of those spaces in the 5,000 to 30,000 square foot range and 53 percent asking between $25 and $35 per square foot. You may never take a sublease. Knowing what one costs changes what you can ask for on a direct deal.

How much space do you actually need?

The cheapest lease is usually the one where you got the size right.

Common planning benchmarks put average density at 150 to 250 square feet per employee, high density at 80 to 150, and more spacious layouts at 250 to 500. The industry target has been drifting down, from roughly 165 square feet per person toward about 132, as shared desks replace assigned ones.

For hybrid organizations, headcount is the wrong input. Size to peak-day attendance plus a 10 to 15 percent margin, then layer on shared space: 15 to 30 square feet per person for conference rooms, 100 to 400 for private offices, 300 to 500 per meeting room.

A 20-person company with 14 people in on a typical Tuesday does not need 20 desks. But it may well need more conference capacity than it had in 2019, because the people who do come in are coming in to meet.

Putting it together

Here is a worked example. Assumptions are labeled; substitute your own. Twenty-person hybrid company, 4,000 rentable square feet, Tysons Class A, five-year full-service lease.

Face rent in year one at $40.00 per square foot is $160,000. Apply a 2.75 percent annual escalation and six months of free rent, and the average net face rent across the term works out to $153,045 a year.

Add operating expense escalations of about $3,462 a year, assuming a $14 base growing at 3 percent, plus four unreserved parking spaces at an assumed $6,000 a year. Total average annual occupancy cost: $162,507. That is $40.63 per rentable square foot, or $8,125 per employee.

Note what happened. The quoted rate was $40.00. The all-in average cost was $40.63, and that is with six months of free rent doing significant work to hold it down. Without the concession package, the same deal lands near $44.60.

Separately, one-time costs. If build-out runs $95 per square foot against a $70 allowance, that is $100,000 out of pocket, before furniture, cabling and moving.

Run that math on every proposal, on the same assumptions, and the right answer usually becomes obvious. Run it on face rent alone and you will pick the wrong building a meaningful percentage of the time.

What to do with this

Size the requirement before you tour. Peak-day attendance, not headcount.

Ask every building on your list for the same five things. The load factor, the base year, the gross-up language, the parking ratio and rate, and the last two years of operating expense actuals. Buildings that provide those quickly are telling you something about how they operate.

Compare on net effective rent, all-in, on identical assumptions. Not on the quoted rate.

Market averages are useful for orientation and useless for negotiation. What determines your number is one building, one landlord, one suite's load factor, one base year, and what that landlord actually agreed to on his last three deals, which is not published anywhere and is exactly what a tenant representative is for.

If you want this run on a specific space, or on the renewal proposal sitting on your desk, that is a conversation worth having before you respond to it.

Sources: Cresa, Northern Virginia Office Market Report Q2 2026; CommercialCafe office market trends for Arlington, Reston and Tysons; Fairfax County Economic Development Authority, Business Taxes and Fees 2025-2026; Avison Young Northern Virginia tenant improvement allowance analysis; CBRE, March 2025 concessions release; OfficeRnD office density benchmarks.