Swimming pool permit rules in Boulder County, CO — also covering above-ground pools, in-ground pools, and spa installations — set fencing, barrier, alarm, and inspection requirements.
A building permit is required to build a swimming pool, spa, or hot tub in unincorporated Boulder County. Any structure holding water over 24 inches deep is a regulated pool and must meet the county-adopted International Swimming Pool and Spa Code (ISPSC).
Boulder County's Community Planning & Permitting reviews and permits residential pools, spas, and hot tubs on one- and two-family lots. Publication B26 defines a swimming pool as "Any structure intended for swimming, recreational bathing or wading that contains water over 24 inches (610 mm) deep," which includes in-ground, above-ground, on-ground pools, hot tubs, and spas. Applications must be submitted online in PDF format through the county permit portal, and installations must comply with the county-adopted 2021 ISPSC plus Boulder County building code amendments. Inside the cities (Boulder, Longmont, Louisville, Lafayette), the city's own building department issues pool permits, not the county.
Building without a permit can trigger stop-work orders, double permit fees, and correction requirements; unbarriered pools are a life-safety violation subject to abatement.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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