Work is expected to begin this month on renovations to 5555 Perimeter Drive, the building that will become Dublin's new city hall.

The city plans to add about 12,000 square feet to the building to house new Dublin City Council chambers and public meeting and office spaces. The structure has approximately 20,000 square feet. The property, which previously was occupied by Delta Energy, was purchased in March 2018 for $4 million.

City Hall at 5200 Emerald Parkway has approximately 22,800 square feet of space. The annex adjacent to City Hall has about 3,000 square feet.

The agreement with Ruscilli Construction Inc. includes a $329,854 guaranteed maximum price for the first phase. The second phase of the project has a GMP of $1,504,388, according to a Nov. 26 memo to City Council.

Construction of addition is expected to be finished in spring or summer 2021.

Residents had an opportunity to see the existing building's interior and view renderings of the project during a Dec. 3 open house held in the Perimeter building.

Tom Oleska said he supports the project. He said he had passed the Perimeter building many times and wished the city owned it.

"I think it's great," he said.

David King, the project architect, said the addition will match the existing building. Columns will be added to the new portion to create a covered porch, he said, a feature on the existing building.

Portions of the addition will also include walls similar to stone walls seen along Riverside Drive in Dublin and Upper Arlington, he said.

Council members had the opportunity to see the building last year when they held their retreat, said Councilwoman Cathy De Rosa.

The building will be on a civic campus, De Rosa said, and it will serve as a community meeting place.

Ron Geese, who served on Dublin's village council in 1977, said he would love to see a timeline of Dublin's city-hall progression in the new building.

Buying the building was a great decision, he said.

His wife, Anne Geese, said the building will be a great addition to the community. She said she liked the design of the council chambers, particularly the ambient light.

Like others, she said the building will be a good fit for public meetings and special events.

"I think it's exciting," she said.