The Davison County Commission's projection that it could renovate the Central Electric Cooperative building on Main Street for $100,000 appears overly optimistic.
A new estimate presented by Puetz Corp. officials during this week's meeting is pushing the number over the $200,000 mark.
The building will be used by the community health nursing staff and the county commissioners.
Auditor Susan Kiepke says the commission could decide to do a contingency transfer or hold a public supplemental budget hearing to cover the additional costs.
The county originally budgeted $675,000 for the building's purchase and renovation - $575,000 for its purchase and $100,000 for remodeling.
Work would be done once Central Electric moves to its new headquarters just south of Interstate 90 in a few weeks.