Miami-Dade County will owe $12.7 million more than originally projected in the first year for a new civil courthouse, partly due to a change in location, county records shows.

The county is to pay $38.7 million for the first year it occupies the courthouse, more than the $26 million previously announced due to rising interest rates, rising construction costs and switching from the Children’s Courthouse parking lot to a Flagler Street site.