Open ceilings are a signature element of most contemporary office designs because of the spaciousness and casual, cool vibe they add to a space. Many decision-makers also assume open ceilings are less expensive than drop ceiling because they use less materials, labor, and time. But, do those assumptions play out in reality?
A 2008 study of retail and office interior construction in five cities seemed to back up that assumption. Sponsored by the Ceilings & Interior Systems Construction Association (CISCA), the study found that initial construction costs for suspended ceilings were 15-22 percent higher than for open plenums in offices, and 4-11 percent higher in retail spaces.
Unfortunately, those findings don’t give the full picture. Over the years, our experience has shown that open plenum ceilings have many benefits—but costing less isn’t one of them. It’s important to plan ahead for the unforeseen costs of open ceilings, which typically make them come in as more expensive, particularly over a building’s life cycle.

Deconstructed Look Takes A Lot of Construction
Open ceilings don’t require the new infrastructure that a suspended ceiling does, so it seems contradictory that they’d be more expensive. However, it’s not as simple as removing suspended ceiling tiles and walking away. Existing infrastructure that’s been hiding behind suspended ceilings is often unsightly, requiring major work to make it attractive to employees or customers.
For example, those exposed ducts seen in modern offices are often not original to the buildings they’re in. Old ductwork is typically blocky, dirty, oily and generally not aesthetically pleasing. Round or oval ductwork, as we used in the build-out for Glassdoor’s new headquarters, delivers a more “finished” look, but is significantly more expensive.
In addition to swapping unsightly ducts, space users want everything painted from the exposed ceiling to the ductwork and plumbing—a job that’s far more complicated than simply painting walls. This also helps tie together what you see when you look up with the color scheme, décor, and branding choices on the floor. In other words, the casual look of an open plenum is actually the result of a lot of skilled labor.
Spellone and Randall Spellone and Randall