HH Renovation & General Contracting Inc
“We will definitely hire them again and we highly recommend HH renovation to anyone looking to get work done!”
Best General Contractors in Ajax, ON
22 companies listed · all 22 in Ajax · 1 open 24/7 · 12 open weekends · 16 rated 4.5+
Data verified October 21, 2026
JK Design Group Inc
“Joe provided complete service of the installation of our quartz kitchen countertops from selection, measurement, installation, electrical modifications, and aftercare.”
Akma Design & Build
“Owners can develop a good rapport with Tanweer & his subs, to finish on time, on budget, with quality.”
Floor and Bath Design
“The entire process from initial consultation, design, material selection, to the final renovation was quite seemless.”
Datis Design Build Inc
“Ali and his team remodelled my bathroom and renovated our kitchen, there were professional and finished on time.”
Cancraft Inc
“Cancraft Renovations does fantastic work - quality, pricing, flexibility to deal with upsets, friendliness, they can't be beat.”
Listed for homeowners in and around Ajax, ON, these 22 companies take on multi-trade work, from a basement build-out to a full renovation. What each one says about licensing, hours and the work it takes on comes from its own website; ratings and quotes come from public reviews.
Area overview: Ajax, ON
All 22 companies we list here are in Ajax itself. We have 23 companies in Ajax on file; this page shows the highest-rated 22. 20 of the companies on this page have a rating, from 4.0 to 5.0 across 365 reviews; 2 have 50 or more reviews and 16 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (92%), quality (86%) and responsiveness (78%). The topics that come up most in reviews of the companies on this page are "communication" and "price". 1 is open around the clock; 12 are open on Saturdays and 2 on Sundays. The services the companies on this page list most often on their websites are basement renovation (2), bathroom renovation (2), bathrooms (2) and kitchen renovation (2). 2 show a licence on their websites. Domain records put 7 websites of the companies on this page at ten or more years old; the oldest dates from 1999. 2 offer emergency call-outs; 10 give free estimates and 1 lists coupons or special offers. We count these figures across the companies on this page; hours and prices change, so confirm the details with the company before you book.
Do any of these companies quote without charging?
The free estimate promises less on a multi-trade job, and it is advertised by 10 of the 22 companies here. Free normally buys a walk-through and a ballpark figure. A real price takes measuring, trade pricing and desk time, so design-build firms often charge for that stage and credit it against the work if you sign.
Mr General Contractors & Renovations Durham
“Amazing people to work with no complains and genuinely great for Reno and more!”
Jarvis Contracting Inc.
“On time, professional, a lot of patience for our questions, and they really care about quality and the customer.”
Manalco Contracting Ltd.
“I can highly recommend Manalco and wey are already using them again in the near future for a couple more project.”
Clayson Construction
“I will definitely recommend you to my family and friends if there is ever a need for your service”
Smid Construction Limited
“I have always been impressed with their professionalism, workmanship, quality and responsiveness.”
Makenady Construction Services Inc. General Contractor Ajax
“We have had Scott Guillot come in several times to do renovations on our home from putting down wood flooring to fixing our ceiling in the kitchen.”
Prgc
“We can't say enough about how great the service was from Ryan & his team at Priceless Roofing & General Contracting!”
Jajio Renovation Inc.
“Victor and his team worked well on time as he quoted,on budget follows all safety protocol and my home is not ESA approved.”
Laptiva
“He was always available to talk and guide us through options, even took us to a tile shop to help us choose our tile design in affordable price.”
Flame Control Coatings Ltd
Cooper-Gordon Ltd
“Extremely professional and their attention to quality work is truly above and beyond expectations.”
My Basement Leaks
“Quick response, good price, great warranty.”
Eco Living Cleaners
“They keep the promises and never bail out on you like other construction company.”
Eastdale Group Inc.
Cleancana Building Services Inc.
Fadak Construction
Why these companies made our list
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