Seattle Breaks the Prime Office Vacancy Pattern

Seattle's prime office market is offering investors a sharp counterpoint to the idea that better buildings carry less vacancy risk. More than a third of the city's prime office space is vacant, a higher share than in its office market overall—and the reverse of the pattern in the other nine largest markets tracked by CBRE.

The gap makes Seattle more than another market struggling with empty offices. It shows how sharply the relationship between building quality and occupancy can vary by location, even as national office conditions improve.

Prime Space Has No Vacancy Advantage

Seattle's prime office vacancy rate stood at 35.3% in the third quarter of 2026, compared with an overall vacancy rate of 27.9%. That puts prime vacancy 7.4 percentage points above the broader market. Nationally, the relationship runs the other way: prime vacancy was 11.9%, compared with 18.2% overall.

Seattle also had the highest prime vacancy rate among the 10 largest office markets by inventory in CBRE's figures. Atlanta was next at 18.8%, followed by Los Angeles at 20.2%—both substantially below Seattle's level.

For an investor evaluating Seattle, a marketwide vacancy rate already signals substantial available space. The prime figure adds another consideration: buying into the market's prime segment does not, on these measures, mean buying into a tighter supply of competing space.

Chicago Shows How Much Location Matters

Chicago offers a particularly useful comparison. Its overall vacancy rate of 28.2% was slightly higher than Seattle's 27.9%. Yet Chicago's prime vacancy rate was 13.1%, less than half Seattle's 35.3%. Two markets with nearly identical headline vacancy rates presented very different conditions in their prime segments.

The contrast was even greater in Manhattan, where prime vacancy was just 1.9%, compared with 9.5% overall. Washington, D.C., also showed a sizable divide, with prime vacancy of 9.8% against an overall rate of 21.4%.

The pattern extended across the remaining large markets. Prime vacancy was below overall vacancy in Dallas-Fort Worth, Los Angeles, Houston, Boston, New Jersey and Atlanta. Seattle alone reversed that relationship.

Those differences complicate a broad investment thesis built around the appeal of prime buildings. The national figures show a clear vacancy advantage for that segment. Seattle's figures show that the advantage cannot simply be carried from one market to another.

Leasing Activity Does Not Erase The Divide

Seattle was not without leasing activity. The market recorded 4.8 million square feet of year-to-date leasing, representing 2.6% of the total. That was close to New Jersey's 4.7 million square feet and Atlanta's 5 million square feet.

But similar leasing totals coexisted with very different prime vacancy rates. New Jersey's stood at 12.9% and Atlanta's at 18.8%, compared with Seattle's 35.3%. The figures underscore the distinction between recording leasing activity and having a relatively tight prime office market.

National conditions were improving in the meantime. Third-quarter leasing reached 63.8 million square feet, up 4% from a year earlier, while net absorption totaled 4.9 million square feet. Overall vacancy declined for a fifth consecutive quarter, reaching 18.2%.

That improving backdrop makes Seattle's divergence worth watching. The national recovery and the prime-space vacancy advantage are both visible in CBRE's numbers, but neither describes every local market.

A More Selective Investment Case

The divergence comes as office investment is expected to gain ground. CBRE projects transaction volume of $91.1 billion in 2026, a 10% increase from the previous year. Private and institutional investors have been increasing their office holdings since 2023, although investment remains well below 2018 and 2019 averages.

For buyers considering Seattle, the prime vacancy rate changes the starting point for underwriting. Rather than treating the prime designation as evidence of relatively limited competition, an investment case must account for a segment in which more than one-third of space is vacant.

That does not establish how an individual property will perform. It does establish the market conditions against which its leasing assumptions must be tested. In Seattle, the case for a prime office acquisition has to rest on more than the national preference for prime space.