Ultimate Pool Builders in Ontario At G3 Pool and Spa, we take pride in our work. Whether you need a new concrete pool built in the backyard of your Toronto home, or you need to develop a larger commercial water oasis, we are the right fit for you. As one of the few luxury pool builders in Southern Ontario, we specialize in projects both big and small, with a focus on the detail. We provide a range of concrete pool and water features installation services to both homeowners and commercial clients. As Toronto’s most experienced luxury concrete pool builder, we can offer you a wide range of services including design consultation, construction, and total project management. We are one of the best Toronto Custom Swimming Pool Builders