Honeywell is moving ahead with a $3.5 million testing addition at its Clearwater aerospace campus. The company is one of the largest private employers in Pinellas County, and the Clearwater operation supports NASA’s Artemis program.
Pinellas County issued the building permit earlier this month for a roughly 3,300-square-foot addition to Plant 6 at 13350 U.S. 19 N. County records describe a one-story addition that will house testing equipment, including a centrifuge used to test components.
The permit documents identify the project as the “Honeywell FL 51 Plant 6 Centrifuge.” Electrical filings classify the space as “Manufacturing: Detailed Manufacturing.”
The application carries a $3.5 million construction value. A separate county fee calculation placed the basic building valuation at about $774,000, though the records do not spell out how much of the larger figure is tied to specialized equipment or other project costs.
Mechanical plans show the addition will have its own heating and cooling system, including a 279,000-Btu cooling unit and a supply fan capable of moving 7,200 cubic feet of air per minute.
The work is taking place at a major Pinellas County employment center. Pinellas County Economic Development listed Honeywell with about 2,200 local employees in 2025, placing it among the county’s largest private employers. More recent reporting has put employment at the Clearwater operation at roughly 2,500.
The Clearwater site also supports Honeywell’s space business. The company has said work there includes components for NASA’s Orion spacecraft, including guidance and navigation systems, vehicle-management computers and cockpit displays used in the Artemis program.
Honeywell has also said its technology has flown on every crewed NASA space mission.
The Plant 6 project has been working its way through county review since 2024. Correspondence from that year shows the associated site plan had been approved by November. The building permit later went through several rounds of revisions before final plans coordination wrapped up in August and the permit moved into the inspections phase in early September.
Honeywell did not respond to requests for additional information before publication. The permit records do not identify what components will be tested in the centrifuge or whether the project will add jobs or increase production capacity in Clearwater.
Pinellas County recently permitted a $3.5 million testing addition at Plant 6 on Honeywell’s Clearwater property. Image: Google Maps.