Swim spas average $22,500, depending on size, quality, and features, whereas traditional in-ground pools average $66,000. Swim spas require less space than traditional pools and offer year-round usability with lower maintenance requirements. The compact design means lower water and chemical usage, resulting in reduced ongoing expenses. Additionally, the installation process is less invasive and time-consuming than constructing a conventional pool, particularly for aboveground models that don't require extensive excavation or permanent structural changes.
Most manufacturers recommend installing swim spas on a solid, level foundation, with concrete pads being the most common solution. These pads cost $2 to $6 per square foot, depending on thickness and reinforcement. The foundation must accommodate the substantial weight of the filled unit, which can exceed several thousand pounds. The concrete should extend beyond the spa's dimensions to provide adequate support and stability. While some alternative foundation options exist, always follow your specific manufacturer's recommendations to maintain your warranty and ensure that the swim spa is safe to use.