Del. Code Ann. tit. 16, § 7601
Promulgation of building, plumbing, electrical and other codes; building permits; fees
16 Del. C. 1953, § 7521; 56 Del. Laws, c. 408; 75 Del. Laws, c. 85, § 1;
The Levy Court of Kent County and the County Councils of New Castle County and Sussex County may adopt and enforce building codes, plumbing codes, electrical codes or other similar codes. The said Levy Court and County Councils may charge reasonable fees for the enforcement of said codes.
16 Del. C. 1953, § 7521; 56 Del. Laws, c. 408; 75 Del. Laws, c. 85, § 1