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2015 Department of Land Use Amendments

The Department of Land Use has announced the adoption of the following codes with amendments, effective March 1, 2015.

International Building Code, 2015 edition
International Residential Code, 2015 edition
International Existing Building Code, 2015 edition
International Swimming Pool and Spa Code, 2015 edition

Additionally, the Department will enforce of the following codes on their respective effective date listed.

International Energy Conservation Code 2012 – March 1, 2015
International Mechanical Code, 2015 edition – anticipated State adoption date of June 1, 2015
International Fuel Gas Code, 2015 edition – anticipated State adoption date of June 1, 2015
International Plumbing Code, 2015 edition – anticipated State adoption date of June 1, 2015

In an effort to proactively inform customers, and give them time to prepare for important building code changes announced by the Department of Land Use, the Code Official will allow a three (3) month transition period for implementation of these codes from the date of adoption to May 31, 2015. During this transition period, the County will accept projects designed to either the old codes or the new codes. Submittals are not allowed to mix and match code provisions, and must identify which code edition is used for the design of the project.

All projects submitted on or after June 1, 2015 will be reviewed using the new regulations. To receive additional extension between June 1, 2015 and August 31, 2015, the contractor or design professional must request the extension in writing and demonstrate the hardship for transitioning to the 2015 codes.

The NCC amendments for the building code are available for download on the County’s website. See for the administrative and adopted code amendment sections. Code books are available for purchase through various vendors, including the International Code Council’s website at New Castle County will also have code books available for purchase within the coming months.

Additional information on the code changes specific to New Castle County can be found on the Department of Land Use website at

To subscribe to automatic notices from Department of Land Use and other County services, including updates on this code adoption, see and sign up for email notifications.

About HBA of Delaware

HBA/DE has been an integral part of the growth and economic development of the State of Delaware since 1947. HBA/DE was founded as a non-profit state affiliate of the National Association of Home Builders (NAHB) representing home builders and other businesses directly related to Delaware's Home Building Industry. Consisting of Builders, Remodelers and a group of diversified associate members, the Home Builders Association of Delaware strives to protect and preserve housing as a symbol of America.


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