For years the office story was about too much space. The third-quarter numbers suggest the more pressing problem, at least at the top of the market, is too little of the right kind.

Savills’ Q3 2026 market reports show availability falling year over year in 21 of the 24 U.S. markets it tracks. Manhattan’s rate is down 280 basis points, San Francisco’s down 640. At the same time, the pipeline of new buildings has almost vanished. Cushman & Wakefield puts the Americas construction pipeline 82% below its 2020 peak, and Atlanta has no office projects under construction for the first time in 15 years. Tenants with big requirements are discovering that a market with 25% availability can still have very few good buildings with a contiguous 50,000 square feet to offer.

The pipeline has nearly run dry

The supply side of the story is stark. Cushman & Wakefield’s Global Trends in Flexible Office 2026 report puts the Americas office construction pipeline at just under 32 million square feet. That is an 82% drop from its recent peak of 175 million square feet in the first quarter of 2020.

With so little new product coming, occupiers and owners are improvising. Flexible office inventory in the U.S. grew 18% year over year as of Q2 2026, and flex space now makes up 3.1% of total national office inventory, up from 2.6% a year earlier and 2.3% in 2024. All 25 of the largest U.S. flex markets added inventory, and suburban flex locations grew 39% between 2024 and 2026, compared with 22% for urban ones. Leasing by the largest flex providers over the past four quarters ran 32% above 2021 to 2023 levels.

Cushman’s researchers frame flex less as a stopgap and more as part of the market’s permanent plumbing: a faster path to quality space for tenants, and a tool landlords are using to fill underused floors as part of broader repositioning.

The 50,000-square-foot problem

Headline availability rates across most markets remain above 20%, which makes the market look roomy. Savills argues that for big tenants it is anything but. Its Q3 Office Spotlight finds that across 16 North American markets, an average of 12.2% of office buildings can offer a contiguous block of 50,000 square feet or more. Then Savills narrows the pool. With each filter, the options shrink sharply: 11.5% once buildings with distressed owners are removed, 7.0% for Class A only, and 3.3% for Class A in each market’s three strongest submarkets. Just 0.6% of buildings are trophy properties with a large block available. Savills’ summary: the challenge for large occupiers is no longer finding available space, it’s finding the right space.

Manhattan shows the squeeze clearly. Some 13.4% of its buildings have a large block, but only 1.0% are Class A buildings in its top three submarkets, and none are trophy towers. Dallas-Fort Worth falls from 14.4% to 0.1% at the trophy level, and Silicon Valley, Miami and Montréal have no trophy options at all. Miami starts with the thinnest supply, just 2.4% of buildings, and its city report counts only ten blocks of 50,000 to 100,000 square feet and two above 100,000. Downtown Chicago has the most large blocks, 32.1% of buildings, but Savills notes much of that space sits in older stock that increasingly needs conversion. Washington, D.C. holds up best at the top, with 8.1% of buildings offering a large Class A block in its best submarkets.

Savills expects premium availability to tighten further, because the depleted development pipeline is years away from delivering meaningful new options. Its advice to occupiers is blunt: start the search earlier, because fewer viable blocks mean longer decision timelines and stiffer competition.

Where the market is tightening

Manhattan is the clearest case of demand outrunning supply. Savills counted 10.3 million square feet of leasing in Q3, slightly below Q2 but still above the 2015 to 2019 quarterly average, and year-to-date volume is up 5.6% to 33.5 million square feet. Availability fell 280 basis points from a year earlier to 13.4%, sublease space shrank from 12.4 million to 8.9 million square feet, and average asking rents rose 8.9% to $82.14 per square foot. Class A rents climbed 9.9% to $94.91.

The deals were large and concentrated in tech, media and law. Proskauer Rose renewed and expanded to 478,000 square feet at 11 Times Square, Anthropic committed to 465,630 square feet at 330 Hudson Street, and Havas Health took 254,118 square feet at 200 Madison Avenue. Seven other leases topped 150,000 square feet. Meanwhile Manhattan’s office inventory has shrunk by 7.4 million square feet in a year as buildings leave the stock.

Dallas-Fort Worth posted the fastest rent growth of the 24 U.S. markets in Savills’ Q3 reports. Average asking rents there rose 9.7%, and Class A rents jumped 12.5% to $44.06, with Class A capturing 74% of leasing. Morgan Stanley’s planned 700,000-square-foot move into a new Uptown tower in 2031 is the anchor of what Savills calls the region’s financial-services boom.

Atlanta shows what happens when the cranes stop entirely. With 1072 West Peachtree delivered, the metro has no office projects under construction for the first time in 15 years. Availability fell 140 basis points to 26.1%, Class A drove nearly two-thirds of leasing, and trophy rents are approaching $70 per square foot.

The same pattern runs through other markets. Downtown Chicago hit a record average asking rent of $48.88, with Class A availability down 180 basis points to 22.2% as inventory shrank by 3.2 million square feet. Austin’s availability has declined for six straight quarters, to 24.0%. Charlotte’s availability is down 400 basis points from a year ago, and a newly delivered tower there opened fully leased at rents above $65 per square foot.

Where it is still loose

Not every market is tightening, and the averages often hide a two-speed recovery. San Diego leasing fell 20.7% from Q2 to 1.0 million square feet, availability ticked up 40 basis points to 21.0%, and average asking rents slipped 2.0% to $3.61 per square foot per month. Downtown availability reached 35.8%, though Savills attributes the jump to roughly 2.7 million square feet of obsolete buildings being reclassified, not to tenants leaving.

Denver’s numbers show the same split inside one metro. Leasing hit a multiyear high on big aerospace renewals, but CBD availability sits at 42.0% while Cherry Creek is at 13.4%. In Houston, leasing ran 11.8% below the five-year quarterly average and overall rents rose less than 1%. Yet trophy and premier Class A availability there is just 12.7%, less than half the overall rate of 26.2%.

Los Angeles posted its strongest leasing since 2019 at 4.0 million square feet, largely on renewals. Even so, availability remains 26.5%, and Savills notes concessions near historic highs are holding effective rents down. Philadelphia’s report uses the phrase “K-shaped” to describe a recovery where the best buildings pull away and the rest wait.

San Francisco, long the cautionary tale, is now a recovery story. Leasing is on pace for one of its best years in decades, with 12.1 million square feet signed through Q3 versus 8.1 million a year earlier. Availability dropped 640 basis points in a year to 27.2%. AI and tech firms are the main drivers, and Savills reports that large blocks of trophy space are already limited.

The ripple reaches Class B

Savills expects the squeeze at the top to push demand down the quality ladder, toward well-located buildings with financially stable owners that sit a notch below trophy status. New York offers an early read on what that looks like.

The Real Estate Board of New York tracked 200 Class B office buildings in Manhattan, Brooklyn and Queens and found average visitation has settled at 72% of pre-pandemic levels. The average hides a wide spread. One in five buildings is now busier than before the pandemic and another 21% are between 80% and 100%, while 32% remain at or below half.

Location matters. Midtown Class B buildings hit 89% of pre-pandemic visitation in August, compared with roughly 70% in Lower Manhattan and Brooklyn/Queens. REBNY points to experienced ownership, transit access and a diversified tenant roster as the dividing lines, with big single-tenant vacancies and coworking pullbacks dragging down the weakest buildings. The group also credits tightening Class A availability for helping Class B, which is exactly the spillover Savills is forecasting nationally.

What comes next

For occupiers, the practical message from these reports is timing. Large tenants in tight submarkets should expect fewer options, longer searches and less negotiating room at the top of the market. Many are responding by renewing in place: renewals made up more than half of the largest deals in Downtown Chicago and 60% of the top deals in Los Angeles, and Google renewed nearly 1.6 million square feet at Moffett Place in Sunnyvale.

For owners, the gap is widening between buildings that can capture that demand and those that cannot. Well-located Class A and upgraded Class B assets with stable ownership stand to gain pricing power. Obsolete stock keeps leaving the market through conversion and demolition, which is helping pull down availability in Manhattan, Chicago, Boston and Northern Virginia. With almost nothing new under construction, the next real test is how soon rents at the top rise far enough to justify building again.

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