A business with a million-dollar annual payroll will relocate from Powell to Delaware.

Delaware City Council on July 22 approved a combined preliminary and final development plan to allow Stronghold Construction to build a 10,000-square-foot office and warehouse facility and a 3,600-square-foot storage building on 6.2 acres at 1327 London Road.

The site is zoned general manufacturing.

Stronghold President Doug Kuepfer said his company has about 19 employees and is a "large diameter driller" that takes on jobs such as drilling foundations for towers, transmission lines and road and bridge construction.

The company also erects electric-transmission lines, performs maintenance on towers and fabricates some tower components.

It's moving from its current 2-acre site at 35 Grace Drive, Powell, he said, because the Delaware site will provide what he called a bigger laydown yard, or storage area.

Some of the drills used by Stronghold, he said, "are fairly large, and when we bring them in to service, we have to have the room."

City documents say Stronghold also will install a 49-foot training tower, and the company will have 28 parking spaces.

City Planning Director Dave Efland told council Stronghold's buildings will be buffered by a number of trees at the site and won't be visible from London Road.

Stronghold has offered to let the city fire department use the 49-foot tower for training purposes, he said.

The site is north of Pittsburgh Drive and in the city's heavy general manufacturing district, he added.

The front of the site near the road, he said, will be left intentionally vacant for potential future expansion or another business. A house at the site will remain as a nonconforming use as long as it's occupied, Efland said.

The new buildings will have metal sides and roofs, he said.

No semitrailers are proposed at the site, to be called Stronghold Industrial Park, he said.