General Contractors in Cornwall
8 general contractors in Cornwall with multi-platform trust scores.
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Who is the best general contractor in Cornwall, Ontario?
The highest-scoring general contractors in Cornwall on ProScore are Millennial Contracting Inc. (84/100), JSM Elite Contracting (80/100) and Menard Robertson Custom Homes and Renovations Inc. (80/100). ProScore has scored 8 general contractors in Cornwall across 10+ data sources and 20+ trust signals. 5 of the 8 are Trusted-tier (70+) or higher.
Star ratings alone do not separate them: 8 of the 8 average 4.5 stars or higher on Google, but only 5 reach Trusted (70+). ProScore also weighs government licensing where it applies, WSIB coverage, ratings on other platforms and what customers say in their reviews.
Trust scores last computed October 13, 2026.
Which general contractors in Cornwall score highest?
All 8 scored general contractors in Cornwall, ranked by ProScore.
ProScore scores 8 general contractors in Cornwall, and their average score is 73 out of 100. 5 of them reach the Trusted threshold of 70 or higher. 3 are registered with WSIB and 3 are registered with HCRA. 8 have Google reviews on file — 101 reviews in total.
Millennial Contracting Inc. is a general contractor based in Cornwall, Ontario, offering services in English, French, and American Sign Language. The business operates on site and maintains free, wheelchair-accessible parking.
Millennial Contracting Inc. ranks 1st of the 8 general contractors ProScore scores in Cornwall, holding a ProScore of 84 out of 100 (Elite tier). Its score draws on 43 Google reviews averaging 4.8 out of 5. Public records show it is registered with WSIB.
JSM Elite Contracting is a general contractor in Cornwall, Ontario, handling kitchen remodeling, bathroom expansion, flooring, and fencing work, open weekdays.
JSM Elite Contracting ranks 2nd of the 8 general contractors ProScore scores in Cornwall, holding a ProScore of 80 out of 100 (Trusted tier). Its score draws on 20 Google reviews averaging 5.0 out of 5.
General contractor based in Cornwall, Ontario, specializing in custom homes and renovations. Offers online estimates and works on-site, with wheelchair-accessible parking available.
Menard Robertson Custom Homes and Renovations Inc. ranks 3rd of the 8 general contractors ProScore scores in Cornwall, holding a ProScore of 80 out of 100 (Trusted tier). Its score draws on 12 Google reviews averaging 4.8 out of 5. Public records show it is registered with WSIB and registered with HCRA.
Based in Cornwall, Robert Boileau Construction LTD is a general contractor operating 24 hours, seven days a week, with wheelchair-accessible parking.
The ProScore for Robert Boileau Construction LTD draws on 2 Google reviews averaging 5.0 out of 5. Public records show Robert Boileau Construction LTD is registered with HCRA.
TrueCon General Contractors Ltd. operates from Cornwall, Ontario and offers general contracting services, with wheelchair-accessible parking on site.
The ProScore for TrueCon General Contractors Ltd. draws on 1 Google review averaging 5.0 out of 5.
The ProScore for Bourgon Construction draws on 3 Google reviews averaging 5.0 out of 5.
The ProScore for Grant Marion Construction draws on 19 Google reviews averaging 4.5 out of 5. Public records show Grant Marion Construction is registered with WSIB and registered with HCRA.
Based in Cornwall, John Gordon Construction handles general contracting work and maintains wheelchair-accessible parking at its location.
The ProScore for John Gordon Construction draws on 1 Google review averaging 5.0 out of 5.
How is a general contractor's ProScore calculated?
Every general contractor in Cornwall is evaluated across four pillars: Reputation (ratings across multiple platforms), Verification (government licensing where it applies and WSIB), Transparency (online presence and profile completeness), and Sentiment (AI analysis of customer reviews). The result is a ProScore from 0 to 100.
Read the full methodology →Who are the top 3 general contractors in Cornwall?
What else should I check before hiring general contractors in Cornwall?
Frequently Asked Questions
Who is the best general contractor in Cornwall?
Millennial Contracting Inc. has the highest ProScore (84/100) among 8 general contractors in Cornwall, Ontario. Rankings are based on ProScore, which evaluates ratings, government licensing, including HCRA new-home builder registration where it applies, WSIB coverage, and AI-analyzed customer sentiment.
How do I find a trustworthy general contractor in Cornwall?
Look for general contractors with verified active WSIB coverage, and consistent ratings across multiple platforms. ProScore aggregates these signals into a single score from 0-100. In Cornwall, 1 general contractor holds Elite-tier ProScores (81+), 4 are Trusted-tier (70+), and 3 are Good-tier (54+).
Are general contractors in Cornwall licensed?
Ontario has no provincial licence for renovation contractors. The HCRA licenses builders of new homes, and a renovation of an existing home typically does not call for an HCRA licence. If you are building a new home, the builder does need one; check it in the HCRA’s Ontario Builder Directory. Some cities license renovation businesses, so check with yours. The regulated work inside the job needs its own licences: an ESA-licensed electrical contractor for wiring, a TSSA-registered contractor for gas, and a certified plumber for plumbing. Ask who does each part and check their numbers. Of the top 8 general contractors in Cornwall by ProScore, 3 are registered with WSIB according to ProScore’s records.
How many general contractors has ProScore scored in Cornwall?
ProScore has scored 8 general contractors in Cornwall, Ontario. Each provider is evaluated using 10+ data sources, 20+ trust signals, and AI-analyzed customer reviews. Trust scores last computed October 13, 2026.
What's the ProScore distribution among general contractors in Cornwall?
Among 8 general contractors in Cornwall, Ontario: 1 is Elite-tier (81+), 4 are Trusted-tier (70+), and 3 are Good-tier (54+). Together they average a ProScore of 73/100, with Millennial Contracting Inc. leading at 84/100.
General Contractors near Cornwall
The nearest Ontario cities with a ProScore page for this trade — a pro based nearby may cover your area.
Other trades in Cornwall
Other trades with a ProScore page in Cornwall, with the number of scored pros in each.