Administration Building Public Works Window Services M-F 8:30 a.m. – 4:30 p.m. 220 Delaware Street New Castle, DE 19720: Phone: (302) 322-9801 Tax Line: (302) 322-9804 Fax: (302) 322-9814	Trolley Barn  Building Official/ Public Services* M-F 8:30 a.m. – 4:30 p.m. 900 Wilmington Road New Castle, DE 19720  Phone: (302) 322-9813 Fax: (302) 323-2144	Police Station 1 Municipal Boulevard New Castle, DE 19720: Phone: (302) 322-9800 Fax: (302) 322-9825  If you need police assistance, or an officer to respond call 911 (emergency) or 573-2800 (non-emergency)

*Call (302) 322-9801 for Building Permits, Business Licenses, No Parking Signs & Special Trash Pick up. 

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