Baton Rouge’s Knock Knock Children’s Museum, which is finally becoming a reality after about a decade in the making, has run into more unexpected expenses during its construction.

The museum’s supporters have spent about 10 years trying to raise millions of dollars for the project and have received help from Metro Council fee waivers and a donation from Mayor-President Kip Holden along the way. But unanticipated costs have kept bubbling up.

The BREC Board of Commissioners voted at the end of August to approve an increase in expenses that the museum is allowed to incur during construction. BREC increased the expense cap from $5,000 to $6,000.

Among the new fees that prompted the increase were a drainage impact study for $2,300, a flood zone determination fee $456 and Department of Public Works plan review for $1,163.

BREC leaders said they do not expect to spend up to the $6,000 cap.

The Metro Council voted months ago to waive around $10,000 in fees for the museum, which included permit fees, traffic impact fees, landscape fees and more. Mayor-President Kip Holden also gave the children’s museum a donation of around $10,000 to cover the costs of the fees before the Metro Council waived them.

Construction on the Knock Knock Children’s Museum began in April, after organizers had raised around $9.4 million for the museum. They were still looking for about $3 million more to help furnish the inside of the museum’s learning zones.

The Knock Knock Children’s Museum is on Dalrymple Drive across from the City-Park and LSU lakes. Construction is expected to take 14 to 18 months, and the foundation is in the process of being built.