Union Gaps mold problem will soon be solved with a new union gap city hall. The city council voted Monday to demolish the current city hall and replace it with a new 120 thousand dollar modular unit that will be up by the end of the year. The old building is expected to be demolished early next year. The unit will bring together all the employees and offices again. City officials say it's a short term solution but one that people have been hoping for.the citizens are well aware that city hall is broke out into many buildings right now and bringing it back together solves a lot of community interest issues and that's what we're looking for," said city administrator, Chris Jensen. the modular unit will be up and running by year's end. It will serve as city hall for at least 5 years.