The Forsyth County courthouse and jail project is proceeding on schedule as commissioners on Tuesday chose a company to demolish some existing downtown structures to clear the way.

Gainesville-based Industrial Facilities Solutions will handle the demolition of the former county parking deck and a building across the street from the current courthouse.

Commissioners voted 5-0 to award the $385,000 bid, which is about $100,000 under budget, said project manager Joe Lee.

The commission also received an update on the project, which voters approved in November 2011 as part of the next round of the special purpose local option sales tax.

The projects are estimated to cost about $100 million, or nearly half of the anticipated revenue from the six-year tax collection that begins in July.

Construction is scheduled to begin in July and last about 18 months, with completion set for the end of 2014, Lee said.

The renovation of the existing courthouse will follow, he said.

Commissioners also agreed with the recommendations of the project team to demolish the existing jail and build two new parking decks.