The Building Division is responsible for the review of building plans, issuance of permits and the inspection of all commercial and residential construction activity. The City of Darien Building Division takes customer service very seriously. We pride ourselves on great customer service and strive to achieve good relations with our residents and businesses. We value your opinions and request you to please take a moment to fill out our customer service survey. We would greatly appreciate any comments or concerns you would like to share about our department and/or your experience with us!