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General contractors in Thornhill, Ontario

Looking for a general contractor in Thornhill, Ontario? Post your project on HomeStars and get matched with Thornhill, Ontario building contractors in your area. Browse profiles, read genuine customer reviews, and discuss your project details with interested pros. All before you make your final choice.

Some of our top rated general contractors in Thornhill, Ontario

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  • General contractor in Thornhill, Ontario

    I am very professional and i always try to exceede my clients expectation for every the project i do for them.

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    • Best of Awards 2026

    Since 1994, Apex Painting has been delivering quality workmanship to homes & business's right across the GTA. We are ready to discuss all interior and exterior painting and decorating projects for both commercial and residential units. 1. We guarantee our projects for 3 years or more depending on the environment and substrate. 2. We guarantee any deficiencies caused by us will be dealt with in a timely manner. 3. We guarantee that all employees will be covered by WCB. 4. We guarantee that we are covered by 2 million dollars liability insurance. 5. We guarantee that you will not be surprised by any extra charges at the end of the project. Any extras will be discussed beforehand with the owner before any work commences. Check out our Facebook for more pictures of our work - Apex Painting Oakville.

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  • General contractor in Thornhill, Ontario

    We provide removal of all kinds of asbestos work. We remove any kind of asbestos within a day or a few days depending on the size of the job. We remove asbestos from attics as well as do full blow in, Professionals with over 20+ years of experience

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  • General contractor in Thornhill, Ontario

    At Klaxon, we strive for clean, and professional service. We'll make sure you are satisfied with our work.

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  • General contractor in Thornhill, Ontario

    We are specialized in designing and installing premium **shower enclosures** (frameless, semi-frameless, and framed), sleek **glass railings** for staircases, balconies, and decks, modern **glass doors** (swing, sliding, and partition systems), and all-season **porch enclosures that enhance both function and curb appeal. With a focus on precision, durability, and clean aesthetics, our expert team delivers tailored glasswork for residential and commercial projects—on time and with flawless results. Contact us today for free consultation!!

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  • General contractor in Thornhill, Ontario

    I enjoy fixing things and bringing customers dream projects come to reality

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  • General contractor in Thornhill, Ontario

    My name is Daniel, owner-operator of Olivett Construction. We have been in business for over five years, working as a trusted subcontractor for Esso gas stations and Circle K franchises across Ontario. We specialize in property rehabilitation, offering high-quality interior and exterior finishes for both commercial and residential properties. Our services include: Fencing, hardscaping, and landscaping Flooring installation, repairs, and demolition Interior and exterior painting and staining Drop ceiling (T-bar) repairs Asphalt repairs Power washing Selective demolition Junk removal and haul-away services While our reputation was built through commercial projects, we now proudly offer our commercial-level expertise to residential property owners across Ontario. Olivett Construction—your go-to contractor for reliable, professional property solutions.

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  • General contractor in Thornhill, Ontario

    OUR SERVICES Residential & Commercial •Interlocking •Concrete •Jewelstone •Flagstone •Waterproofing •Drainage •Excavations •Fences •Sod •Wash & Seal •Tree & Stump removal •Armour stone •Retaining walls •Artificial turf •Asphalt Sealing •Pergola •Egress window •Walkout entrance •Pools •Waterfalls & Ponds •Masonry brick & Stone •Stone Veneer •Bollards •ICF Superform ( pools & foundations) •Excavation services

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  • General contractor in Thornhill, Ontario

    Highly skilled reno guys you're looking for. Contact us.

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  • General contractor in Thornhill, Ontario

    Welcome to Canata Group Construction Canata Group Construction is a family-run general contracting firm serving Mississauga and the GTA . While founded in 2017, we are backed by over 30 years of experience in the industry. We specialize in full house remodeling, custom decks, and fencing. We are committed to providing the best pricing on labour and sourcing high-quality materials more affordably than our competitors. Our team is known for completing projects on time and exactly to our clients' specifications. Our portfolio includes large-scale professional work, such as the full renovation of the University of Toronto Graduate House and ongoing apartment/condo renovations for various property management companies. Whether it is a private home transformation or a professional rental turnover, we deliver quality you can trust.

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  • General contractor in Thornhill, Ontario

    Welcome! We are a well-established Plumbing & Drain company proudly serving our community since 2016. Built on a foundation of quality, reliability, and hard work, we’ve grown into a trusted name in the industry. While plumbing and drain services remain our core, we’ve expanded our expertise to offer a full range of contracting solutions, including: • Flooring installation • Demolition services • Landscaping • Excavation work Whether it’s a small repair or a large-scale project, we bring the same level of professionalism, attention to detail, and commitment to every job. Our team is equipped, experienced, and ready to help you build, renovate, or restore — the right way. Let us know how we can help with your next project!

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  • General contractor in Thornhill, Ontario

    Anor Plumbing & Heating Inc. is a fully licensed and insured company, which specializes Residential, Commercial, New built, custom houses and renovations, fixture replacement and much more. No job is too big or too small. We provide consultation and solutions and pride ourselves on quality and customer satisfaction. Our motto is "Where Quality Begin"

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  • General contractor in Thornhill, Ontario

    Experienced HVAC professional specializing in residential service and installations. Skilled in furnace and AC diagnostics, electrical troubleshooting, refrigeration handling, and system performance optimization. Operates a fully equipped service van and manages tools, equipment, and business operations independently. Strong understanding of: • Furnace and air conditioning systems • Electrical diagnostics and control wiring • Refrigeration tools and procedures • Job site efficiency and safety Focused on delivering reliable service, practical solutions, and professional workmanship.

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  • General contractor in Thornhill, Ontario

    I am a skilled painter with over 13 years of experience in residential and commercial painting. I take pride in delivering high-quality workmanship with strong attention to detail, clean finishes, and reliable service. Over the years, I have developed expertise in surface preparation, interior and exterior painting, priming, and applying different types of paint and coatings. I am committed to completing every job efficiently, on time, and to the highest standard. Customer satisfaction is always my priority, and I work carefully to ensure smooth, long-lasting results that meet each client’s expectations. Whether it is a small touch-up or a full painting project, I bring professionalism, experience, and dedication to every job.

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  • General contractor in Thornhill, Ontario

    👋 Hi, I'm Brandon – Owner of SnapFix GTA Thanks for checking out SnapFix GTA! I started SnapFix to fill a real gap in the market: reliable help for the small jobs that most contractors ignore. Whether you need a TV mounted, a smart thermostat installed, or just a few things fixed around the house, my goal is to make the process easy, affordable, and done right the first time. No guessing, no ghosting — just solid work at fair prices. I’m local to the GTA, fully insured, and committed to providing fast, professional service you can count on. Let’s fix that to-do list — one job at a time.

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  • General contractor in Thornhill, Ontario

    Can do everything for maintenance, can help for moving, staging etc

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4.9

Top rated general contractors

Our general contractors in Thornhill, Ontario, are rated 4.9 out of 5 based on 862 reviews from homeowners like you.

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What types of services are offered by local general contractors in Thornhill, Ontario?

Whether it's a home renovation or a commercial project, a local general contractor in Thornhill, Ontario can help streamline the process. They’ll handle everything from project planning to construction, making sure the work is done right, on time, and within budget.

Popular general contractor services include:

  • Installing or replacing a roof
  • Repairing or maintaining a roof or gutter
  • Installing or renovating bathroom
  • Paving installation

Wondering how to find a general contractor in Thornhill, Ontario? Make your search easier with HomeStars. Just post your job, provide a few details, and choose from available general contractors in Thornhill, Ontario. It’s quick, simple, and hassle-free.

What is the average cost of hiring a general contractor in Thornhill, Ontario?

On average, general contractors in Thornhill, Ontario typically charge an average hourly rate of $50 to $150. In some cases, they might charge per project, such as for smaller renovations or larger construction jobs, with costs ranging from $5,000 to $200,000 or more. Thornhill, Ontario general contractors may also charge 10% to 20% of the total project cost, depending on the scope of work.

For common general contractor jobs, expect to pay:

Find a general contractor in Thornhill, Ontario on HomeStars

Finding the right general contractor in Thornhill, Ontario is all about matching your project needs with the right experience and budget. HomeStars makes it easy to connect with Thornhill, Ontario building contractors who have a proven track record, with customers leaving reviews and ratings based on their past work.

How to hire Thornhill, Ontario general contractors on HomeStars:

  1. Start by posting your project. Add details about the work and include pictures for accurate quotes.

  2. Read through and compare profiles of general contractors based in Thornhill, Ontario.

  3. Connect with a general contractor in Thornhill, Ontario to discuss your project, request a quote and ask any questions.

  4. Hire the right pro to get the job done and leave a review based on your experience.

Whether it’s a small renovation or a major construction project, HomeStars lets you easily review and select general contractors in Thornhill, Ontario with confidence. All building contractors in Thornhill, Ontario who register on our platform are verified through ID checks, so you can hire the right pro with peace of mind.

What to ask a Thornhill, Ontario general contractor before hiring?

Before you hire, you might want to ask general contractors in Thornhill, Ontario the following questions to get a better understanding if they’ll be a good fit for your project.

What types of projects do you usually handle?

A general contractor in Thornhill, Ontario should be able to outline the types of projects they specialize in, such as home renovations, new builds, or commercial construction. Local experience as a contractor in Thornhill, Ontario is important for understanding regional building codes and construction practices.

Do you handle permits, inspections, and subcontractor coordination?

The right Thornhill, Ontario general contractor will manage permits, inspections, and coordinate subcontractors, ensuring your project meets legal and safety requirements without unnecessary delays.

Do you carry general liability insurance and WCB coverage?

All general contractors in Thornhill, Ontario should carry general liability insurance and be registered with the provincial Workers’ Compensation Board to protect both you and their team in case of accidents or property damage.

How do you handle disputes or issues during construction?

A general contractor in Thornhill, Ontario should have a clear process for managing disputes, unexpected delays, or mistakes. They should be able to explain how they communicate issues, propose solutions, and involve you in decision-making when adjustments are needed.

Who will manage the project on-site, and how will communication work?

Clarify who oversees daily operations and how you’ll stay updated throughout the project. The Thornhill, Ontario building contractor should assign a dedicated foreperson or project manager to coordinate all aspects of the work, including supervising subcontractors and scheduling inspections.

FAQ: Common questions about general contractors in Thornhill, Ontario

How long does a typical renovation or construction project in Thornhill, Ontario take?

Project timelines depend on size and complexity. A Thornhill, Ontario general contractor will provide a realistic schedule with start and completion dates and will update you on milestones throughout the project.

When should I hire a general contractor?

Hiring a Thornhill, Ontario general contractor early in the planning phase is ideal, especially for large renovations or construction projects. They can help with budgeting, timelines, permits, and coordination from the start.

Do general contractors in Thornhill, Ontario handle cleanup after the project?

Most building contractors in Thornhill, Ontario include cleanup as part of their services, ensuring debris is removed, the site is safe, and your property is left in good condition once work is complete.

Do general contractors offer design advice or planning support?

Some general contractors in Thornhill, Ontario provide design input, helping you optimize space, layout, and materials. While they may not replace an architect, their practical experience can improve efficiency and cost-effectiveness.

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