Colonial Pools & Recreation
“Very knowledgeable and honest to come in the next day and fix my poo heater...”
Best Swimming Pool Builders in Ajax, ON
15 companies listed · 4 in Ajax · 9 open weekends · 12 rated 4.5+ · 1 shows a licence
Data verified October 18, 2026
Pristine Pools
“A special thanks to Jackson and crew for such a great job from beginning to completion.”
Baun Landscapes
“From the pool and deck to the carefully chosen plants, and well-crafted hardscape elements, they have created a stunning and functional outdoor space for our family to enjoy.”
Inline Landscaping Inc.
Bremner Pool and Spa
“They implemented all of the additional features we requested including new steps into the pool, a pool light and a new safety cover.”
Ace Pools
“ACE did my pool closing today, I have never got such a service from any other company.”
The 15 companies listed for Ajax, ON build new pools. The construction window is short in this climate, so ask early where you would sit in the schedule and which stages would run into fall if the start date slips by a few weeks.
Area overview: Ajax, ON
4 of the 15 companies we list are based in Ajax; the other 11 serve Ajax from towns including Whitby (8 km), Pickering (5 km) and Whitchurch-Stouffville (13 km). The companies on this page are rated from 3.7 to 5.0 across 608 reviews; 4 have 50 or more reviews and 12 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (88%), quality (86%) and responsiveness (75%). 9 are open on Saturdays and 3 on Sundays. The services the companies on this page list most often on their websites are pool maintenance (3), pool inspections (2), pool liners (2), pool safety covers (2) and safety covers (2). 1 shows a licence on its website. Domain records put 7 websites of the companies on this page at ten or more years old; the oldest dates from 2000. 2 offer financing or payment plans; 7 give free estimates and 2 list coupons or special offers. We have a website on file for all 15 of the companies on this page; 14 publish a contact page; 10 list a public email and 2 take bookings online. We count these figures across the companies on this page; distances are straight-line, and hours and prices change, so confirm the details with the company before you book.
Does a pool builder need to be nearby?
4 of the 15 listings are based in Ajax; the others are within 20 km. Builders cover wide territory in this trade. What matters is how far they will drive for warranty work years after the deposit cleared, so ask that plainly.
Poolstepspecialists.com
“He explained the process as he went along which really helped to understand the importance of all the steps involved.”
Tecum Pools and Spa Ltd.
“I have had Tecum Pools change my pool lining last year and install a pool cover this year.”
Diplomat Leisurescapes Pools Spas Hot Tubs
“I had a broken part and they had a spare so just gave it to me.”
Avoca Pools Ltd.
“They put a pool in for me earlier this year, they were very professional and got the job done on time!”
Landscape Designer Toronto: Land Effects
“They are very creative, responsive to our wishes, honest, provide timely service, and are easy to work with.”
Guardian Pool Services Ltd
“I will definitely be using Guardian Pool Services in the future for all my pool needs.”
Aquaview Pools
“Robert and his team have been cordial, courteous and timely with all of their visits.”
Nottingham Pools Ltd.
“I've also used their services to replace equipment, change a worn out pool liner and installing a safety fitted cover.”
Elite Pool Design
“Unbelievable experience with Chris and his entire team.”
Why these companies made our list
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