Date: July 1, 2026
Subject: Definition of Existing Pool
Section No.: Chapter 2
Code Book: 2021 International Swimming Pool and Spa Code (ISPSC), as adopted in the 2022 Connecticut State Building Code (CSBC)
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This interpretation is being issued in response to a request dated June 9, 2026. Question #1: This pool received a legal permit in 1966. The pool and its equipment obviously exist. Does the fact that the pool was filled with dirt in 2016 render it nonexistent for the purposes of the code? Note that the definition says nothing about it being “in use”. Connecticut did not amend this definition in 2022. Answer #1: The ISPSC defines in Chapter 2 an existing swimming pool as a pool or spa constructed prior to the date of adoption of this code, or one for which a legal building permit has been issued. The subject pool was legally permitted and constructed in 1966 and therefore meets the definition of an existing pool. The fact that the pool was filled with earth in 2016 does not, by itself, render the pool nonexistent for code purposes. Neither the ISPSC definition of an existing pool nor the Connecticut amendments require that the pool be actively in use to maintain its status as an existing pool. While the 2022 CSBC amendment to the 2021 ISPSC includes a definition of a public pool and residential pool, it uses the phrase intended for recreational bathing, swimming, diving or therapeutic purposes. However, intended is not defined in the code and therefore we explore standard dictionary terms as indicated in section 201.4, which states: “expected to be such in the future” (https://www.merriam-webster.com/dictionary/intended) Additionally, Chapter 2 of the 2021 International Existing Building Code (IEBC) portion of the 2022 CSBC defines buildings and structures erected under a legal permit as existing buildings or structures. Structures erected prior to October 1, 1970, are also deemed existing buildings or structures regardless of the existence of a legal permit or certificate. Based on the information provided, the pool was filled with earth but was not demolished. Connecticut State Agencies Regulations §29-401-1(d) defines demolition as any wrecking activity directed to the disassembling, dismantling, dismembering and/or razing of any structure or part thereof. Since no demolition has occurred, the pool remains an existing structure. Accordingly, since the pool is considered an existing pool, pursuant to Section 302.3 of the 2021 IEBC, materials and components that were lawfully installed and complied with the requirements in effect at the time of installation are permitted to remain unless determined by the code official to be unsafe. According to Section 105.1 of the 2021 International Building Code (IBC), as adopted in the 2022 Connecticut State Building Code (CSBC), any intent to repair, alter, or reconstruct a structure— including associated infrastructure systems — requires a building permit. The proposed work must comply with current code requirements. For one- and two-family residential pools, the current provisions of the International Swimming Pool and Spa Code (ISPSC) apply. Omarys Vasquez, AIA NOMA
For public swimming pools, the applicable Connecticut Department of Public Health regulations must be followed.
State Building Inspector
