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Danar Co. GTA
- Retaining Wall
- Driveway
- Renovations
“Not only did they complete the job, they corrected deficiencies in the adjoining walkway and interlock to ensure that the final product was seamlessly perfect.”
Best General Contractors in Thornhill, ON
24 companies listed · all 24 in Thornhill · 14 open weekends · 20 rated 4.5+ · 4 show a licence
Data verified October 16, 2026
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Darvish Inc
- Pricing
- Glass
- Home
“After designing, manufacturing and finally installing my stairs, including gorgeous circular stairs, we are simply stunned at how beautiful the project turned out!”
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𝑷&𝑶 𝑮𝒆𝒏𝒆𝒓𝒂𝒍 𝑪𝒐𝒏𝒔𝒕𝒓𝒖𝒄𝒕𝒊𝒐𝒏 𝑰𝒏𝒄
- Shower
- Home Renovation
- Budget
“The quality of their work exceeded my expectations, and I would highly recommend this company to anyone looking for a reliable and skilled construction team.”
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ADH Canada Inc.
- Electrical
- Future
- Plumbing
“If you're looking for a construction company that delivers outstanding results and an exceptional customer experience, look no further than "ADH CANADA INC.”
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Arcon Landscape Construction Ltd
- Punctual
- Job
- Driveway
“I'm sharing my experience with Arcon landscaping at least for last few years and I really appreciate their service and their professionalism and specifically their workmanship with the landscaping around the pool and water features.”
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Luar Contracting
- Quote
- Accuracy
- Budget
“From the initial consultation to the completion of the project, I was impressed with the level of expertise, customer focus, and dedication demonstrated by the contractor.”
Listed for homeowners in and around Thornhill, ON, these 24 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: Thornhill, ON
All 24 companies we list here are in Thornhill itself. We have 51 companies in Thornhill on file; this page shows the highest-rated 24. 23 of the companies on this page have a rating, from 4.0 to 5.0 across 387 reviews; 3 have 50 or more reviews and 20 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (97%), quality (81%) and responsiveness (78%). The topics that come up most in reviews of the companies on this page are "communication", "price" and "estimates". 13 are open on Saturdays and 5 on Sundays. The services the companies on this page list most often on their websites are basement renovations (2), bathroom renovations (2), condo renovations (2), home renovation (2) and kitchen renovations (2). 4 show a licence on their websites. 5 have ten or more years of experience, the longest 29 years. 1 offers financing; 10 give free estimates and 1 lists coupons or special offers. We have a website on file for 22 of the companies on this page; 21 publish a contact page and 21 list a public email. 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 say they are licensed?
4 of the 24 listings on this page show a licence on their websites. Verify the claim with the issuing body. Then ask separately for a WSIB or provincial WCB clearance letter, which is the document that keeps a workplace injury on your property from becoming your bill.
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Shemiran Construction LTD
“I have had two renovation projects with this company and they did an excellent job in a short period of time for a reasonable price!”
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Artycon
- Team
- Budget
- Result
“There were several difficulties with the way the architect imagined the project, and Amir managed to make everything work, without increasing the cost or the timeframe.”
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York Building Materials Inc.
- Price
- Team
- Railing
“I will recommend your team for all the great services and options you provide because of who you guys are, how you made me feel, and of course the beautiful work you all completed.”
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Emian Construction Group
- Design
- Basement
- Condo
“In one month they managed to remove popcorn ceiling/install a drop ceiling and potlights, completely renovate the kitchen (cupboards, counters, backsplash), paint, upgrade some plumbing, and replace the bathroom vanity and mirror.”
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TJI Renovation
- Timeline
- Budget
- Work
“From the color selections of the tile, flooring and countertops, to the layout of our theatre room and custom steam shower design, Premium quality craftsmanship, attention to detail, great service, fair price are a few things that stand out from work...”
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Arco Construction Co
- Property
- Management
“They built our dream home back in 2015 and have been managing our property ever since.”
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Generational Homes
- Remodeling
“Just in 2 weeks, I got my remodeling done for my house, thanks Natan!”
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Solarium Service Ltd.
“Dean and Paul were always professional and did an amazing job (and they are great guys too!”
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Hrc Group
“They treated the customer(us) with courtesy and listened to our concerns and requests, and always attempted to find a solution to new issues which inevitably arise in an extensive renovation of an older home”
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Level Structure Inc.
- Family
“Excellent knowledge, Friendly management and a very good price for a high quality job they provide.”
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KG Building Restoration Inc.
“They attention always for quality, We have done so many projects for this company, The payments always have been on time,”
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Renowell
- Team
“Even their post-renovation service was exceptional, showcasing their genuine care for their clients.”
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Decor Plus Renovation
“Nos valeurs se basent sur la confiance, la rigueur et le dynamisme. Afin de créer à tout coup un décor se mariant parfaitement à votre domicile, notre désir est de collaborer avec vous, que ce soit pour moderniser, rehausser ou développer votre terra...”
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Al-D Home Improvement Solutions
- Kitchen
“We are delighted with our renovated kitchen and with the service we received from Al-D Company.”
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Black & McDonald
“Excellent”
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Albacon Construction
“As an experienced contractor, Albacon Construction has formed many relationships based on high levels of workmanship, trust, and fair pricing. Our staff members furnish the required labour and material resources to ensure smooth and continuous progre...”
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Lulu Construction and Demolition
“I'm thrilled with the results and couldn't recommend them enough to anyone looking for top-notch construction work.”
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Heritage Concrete Pumping Limited
“The most professional concrete pumping company we have worked with.”
Renovation, Repair & Home Improvement Services in Thornhill, ON Cost Estimates
Minimum cost
$1484
Maximum cost
$205471
National Average
$27659
Avg Per Hour Rates
$141
$3616
$57358
Fair price range is based on 364 cost profiles
Why these companies made our list
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