Plainfield Building Department 24401 W Lockport St Plainfield, IL 60544 Phone : (815) 439-2937 Plainfield Building Department Business Category Government Offices-City Village & Twp Legislative Bodies Plainfield Village Of--administration, Building 23145 W Lincoln Hwy Plainfield, IL 60586 Phone : (815) 439-2937 Business Category Government Offices-City Village & Twp Government Offices State & Local Government Offices & Public Schools