 The contract for Blackford County 's first courthouse was let on December 7 , 1841 , and construction was supervised by Charles and William F. Jones . The proposed cost for the courthouse was $ 5 @,@ 600 . Until the courthouse was ready , rooms were rented from various members of the community for conducting county government . By May 1845 , an arrangement was made for the upper floor to be used for court proceedings until the entire building was completed . Finally , in a special session held October 31 , 1845 , the board of commissioners found that the courthouse had been completed according to contract . The total cost for the courthouse building was $ 5 @,@ 750 . 
