BLOOMINGTON, INJunior building inspector Thomas Spengler, 8, ordered the closure of a tree house owned by Jimmy Herman Monday. 'The tree house will remain closed until improvements are made to its structure,' Spengler said. 'The rope ladder leading up to the house needs to be brought into compliance with local building codes. Also, the structural integrity of the clubhouse, wedged as it is into Old Man Kessler's oak tree, is compromised by the hastily added lookout post.' Spengler threatened to close the tree house permanently should Herman fail to bring its tire swing up to code. 