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General contractors in Alton

Looking for a general contractor in Alton? Post your project on HomeStars and get matched with Alton 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 Alton

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  • General contractor in Alton

    We are a family operated company. We take great pride in our work and will promise 100% customer satisfaction!

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  • At Marso Mechanical, we provide fast, reliable plumbing services you can trust. From fixing low water pressure to full home renovations, we handle every job with care and attention to detail. We’re fully licensed, Red Seal–certified, and committed to getting the job done right the first time — so you can enjoy worry-free plumbing.

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  • General contractor in Alton

    Ashley’s Construction & Home Improvements is a trusted, full-service construction and renovation company dedicated to delivering quality craftsmanship, dependable service, and honest pricing. We specialize in residential and light commercial projects, offering everything from renovations and repairs to complete home improvements. Owned and operated by Ashley Augustin, our business is built on integrity, attention to detail, and a strong commitment to customer satisfaction. We take pride in working closely with our clients to understand their vision and bring it to life—on time and on budget. Whether you’re upgrading your home, repairing existing spaces, or planning a new project, Ashley’s Construction & Home Improvements is your reliable partner from start to finish.

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  • General contractor in Alton

    Handyman

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  • General contractor in Alton

    We build decks that are made to last and designed to impress. Over 300 successfully completed projects recently — and we’re just getting started. We work with natural wood, composite, and other modern materials to provide the best solution for every project. If you are looking for high-quality: • decks • pergolas • fences • custom outdoor woodwork — now is the time to contact us. Professional craftsmanship, attention to detail, and results you’ll be proud of. Message us today and let’s bring your project to life.

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  • General contractor in Alton

    Milla Carpentry is a Toronto based (gta) company,I’m also a member of LIUNA local 183,I specialize in rough carpentry, Drywall,Deck,Fence,Drywall,Door and window installation and framing basements at a competitive price👍🏾 Free quote is also available

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  • General contractor in Alton

    Reliable demolition and cleanup services for residential and commercial projects. We specialize in safe, efficient interior demolition, debris removal, and site preparation with attention to detail and on-time completion. Contact us for fast response and quality work.

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  • General contractor in Alton

    Greetings, my name is Miguel and I'm passionate about providing top-notch services in plumbing (4yr experience), landscaping (3yr experience)and cleanup services. I take pride in delivering quality work that meets my customers' needs. Whether you need a quick plumbing fix, a beautiful landscape design, or thorough cleanup services, I'm here to help. I believe in building strong relationships with my clients and ensuring their satisfaction with every job. Let's work together to create the perfect solution for your home or business!

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  • General contractor in Alton

    Hello. We specialize in home renovations or basement renovations. We have been in business for over 7 years. We guarantee quality and reputation and have a warranty.

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  • General contractor in Alton

    General Contracting Painting Landscaping Fine carpentry Electrical

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  • General contractor in Alton

    We are a trusted and detail-oriented renovation company specializing in high-quality residential and commercial projects. Our team is committed to delivering exceptional craftsmanship, innovative design solutions, and reliable service from start to finish. Whether it’s a full home remodel, kitchen or bathroom renovation, or custom upgrades, we focus on precision, durability, and client satisfaction. With a strong emphasis on transparency and professionalism, we work closely with our clients to bring their vision to life on time and within budget. Our goal is to create functional, beautiful spaces that add lasting value and comfort to every property

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  • General contractor in Alton

    very clean work,always deliver the best job.

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  • General contractor in Alton

    Hey there. We are a framing company. And I also do a basement renovation and hole house as well. So dial this number if you are looking to update your beautiful house. 647 704 7406. Ask for mr. Tenzin

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  • General contractor in Alton

    Artisian Corp – Your Turnkey Backyard Transformation Experts With over 10 years of experience, Artisian specializes in complete backyard transformations across most regions in Ontario. We offer turnkey solutions, handling everything from design and permits to full construction and finishing—so you can enjoy a stress-free experience. Our expert team delivers a wide range of high-quality services, including: ✅Fiberglass pools, Hot tubs, Water features ✅Landscaping & interlocking ✅Concrete work & coping ✅Outdoor kitchens & BBQs ✅Gazebos, pergolas, cabanas & Patios ✅Fireplaces & Fire pits ✅Outdoor lighting & turf ✅Sport courts, Monkey bars & More! We are committed to craftsmanship, professionalism, and transparency in every project we take on. Whether you're creating a relaxing retreat or a luxury entertainment space, we’re here to bring your vision to life. At Artisian, customer satisfaction is our top priority. We take pride in building outdoor spaces that are beautiful, functional, and built to last. Let us help you turn your backyard into your favorite place to be.

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  • General contractor in Alton

    With over 25 years of hands-on experience in residential construction, Chorus Construction delivers high-quality renovations built on expertise and attention to detail. Our background in site operations and project oversight ensures every job is well-managed, on schedule, and executed with precision. In addition to full-scale renovations, we also offer a dedicated handyman division for smaller projects, repairs, and home maintenance—providing the same level of professionalism and care, no matter the size of the job. We take pride in clear communication, reliable service, and workmanship that stands the test of time. Our focus is simple: do it right the first time and deliver results homeowners can trust.

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  • KC & Shield Aluminum specializes in custom windows, entrance doors, sliding doors, garage doors, and siding insulation, along with professional installation services. We are dedicated to enhancing the luxury and energy efficiency of homes across the GTA.

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4.9

Top rated general contractors

Our general contractors in Alton, are rated 4.9 out of 5 based on 257 reviews from homeowners like you.

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What types of services are offered by local general contractors in Alton?

Whether it's a home renovation or a commercial project, a local general contractor in Alton 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 Alton? Make your search easier with HomeStars. Just post your job, provide a few details, and choose from available general contractors in Alton. It’s quick, simple, and hassle-free.

What is the average cost of hiring a general contractor in Alton?

On average, general contractors in Alton 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. Alton 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 Alton on HomeStars

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

How to hire Alton 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 Alton.

  3. Connect with a general contractor in Alton 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 Alton with confidence. All building contractors in Alton 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 Alton general contractor before hiring?

Before you hire, you might want to ask general contractors in Alton 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 Alton 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 Alton is important for understanding regional building codes and construction practices.

Do you handle permits, inspections, and subcontractor coordination?

The right Alton 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 Alton 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 Alton 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 Alton 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 Alton

How long does a typical renovation or construction project in Alton take?

Project timelines depend on size and complexity. A Alton 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 Alton 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 Alton handle cleanup after the project?

Most building contractors in Alton 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 Alton 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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