Work is under way on a 3,500-square-foot addition to the jubilee, at the northeast corner of Fourth and Main streets, according to Terry Dunavin, who owns the jubilee with his wife and the jubilee’s namesake, Annie Dunavin. The couple have owned Annie’s since 2003, purchasing it from Glen Smith.

Annie Dunavin is a singer, and her husband is her business manager.

Construction started in June, but was delayed when high temperatures affected the timetable to pour concrete.

Once work is complete, which Terry Dunavin hopes will be in October, the country music performance hall will feature 150 additional seats, bringing the total seating capacity to 450. The construction project also includes new concessions and restrooms, as well as a lobby.

“The way we’ve got it worked out, we’ll never have to shut down or miss a show,” Dunavin said.

Dunavin said the couple plan a grand opening when work is done, and he’s hoping they can attract a Nashville act to perform at the grand opening.

“Our whole object is to add seating and start bringing in name acts,” he said, adding that Annie’s is targeting Branson and Nashville acts.

The jubilee recently has attracted a number of tour groups to its Saturday night performances.

“It’s been working really well,” Dunavin said.

A main feature of the construction project will be a 32-foot tower at the jubilee’s entrance on Fourth Street. It will be lit inside and include a foyer with an archway, giving the jubilee more of a feeling of a theater.

“It will really stand out in the downtown area,” Dunavin said.