General contractors

The 10 Best General Contractors in Mississauga, ON

Updated 85 firms checked10 ranked

This list ranks 10 general contractors in Mississauga, ON. It starts from Google Maps searches for general contractors and related building work in Mississauga: 85 firms were checked, and building and renovation firms with their own website and an open Google listing went forward. Firms are weighed on their Google rating, the number of reviews behind it, how closely their services match general contracting, and their portfolio. The strongest firm overall sits at place 1, places 2 to 4 carry a badge for what each suits best, and places 5 to 10 run in order. Ratings and review counts are Google's, checked October 14, 2026. How we rank

3M Renovations

Best overall

Mississauga renovation company handling kitchens, bathrooms, legal basements and decks for homes and commercial spaces across Toronto and the GTA.

Updated

Why it ranks here

  • Handles renovation and repair work on houses and commercial properties across Mississauga, Toronto and the rest of the GTA.
  • Offers legal basement renovations alongside steel and wood framing for structural work.
  • Trade services run from framing, drywall and painting to flooring, baseboards, demolition and assembly.
  • Builds complete custom decks for outdoor living space as well as interior renovations.
Basement renovations · Kitchen renovations · Bathroom renovations · Framing and drywall · Custom decks Mississauga
Visit website Call 647-963-2584
5.0 from 76 Google reviews

Cozy Casa

Best for custom homes

Greater Toronto Area design-build studio doing custom homes, full home renovations, basements and secondary suites, plus commercial fit-outs.

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Why it ranks here

  • Works as a design-build studio, treating design and construction as one process from the first day of a project.
  • Residential work spans custom homes, full renovations and additions, lifestyle basements and legal secondary rental suites.
  • Leads the design itself and brings in architects, engineers and interior designers when a project needs them.
  • Portfolio includes a custom home and a lifestyle basement in Mississauga, a legal basement in Oakville and a Toronto condo remodel.
  • Commercial jobs cover offices, retail units, tenant fit-outs, restaurants and wellness facilities.
Custom homes · Lifestyle basements · Design-build · Legal secondary suites · Home additions Mississauga
Visit website Call 905-789-5665
5.0 from 70 Google reviews

Sky Home Renovation

Best for legal basement finishing

Mississauga renovation company doing legal basement finishes, kitchens, bathrooms and custom home renovations, from complete houses to single rooms.

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Why it ranks here

  • Has 15 years of experience in renovation work, from complete house renovations to single-room remodels.
  • Offers a one-year warranty on materials such as faucets and showers, and six months on plumbing and electrical labour.
Legal basement finishing · Custom home renovations · Kitchen renovations · Bathroom renovations Brampton, serves Mississauga
Visit website Call 647-782-9154
4.9 from 172 Google reviews

Osoba Renos & Design

Best for condo renovations

Mississauga and Toronto-area renovation company doing full-home, bathroom, condo and basement renovations with an in-house crew.

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Why it ranks here

  • Each project is run start to finish by one in-house crew of full-time carpenters, tilers and finishers rather than rotating subcontractors.
  • Workmanship is covered for up to 5 years after a project is handed over, in writing.
  • A project manager acts as the single point of contact and runs each job.
  • Its portfolio lists 50 projects, including 22 full-home renovations, 15 bathrooms, 8 condos and 5 basements.
  • Condo jobs include arranging board approvals, elevator bookings and IIC-rated flooring.
  • Projects span Toronto, North York, Etobicoke, Mississauga and Oakville, plus an 18th-century mansion restoration in Picton.
Bathroom renovations · Full home renovations · Basement renovations · Condo renovations Mississauga
Visit website Call 647-562-4275
5.0 from 60 Google reviews

HandyBros

Mississauga general contractor doing home renovations, decks, landscaping and shade structures such as awnings and pergolas across the Greater Toronto Area.

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  • Backs its installs with a 2-year workmanship warranty, returning to fix install problems for up to 2 years after completion.
  • Outdoor work covers decks and landscaping, plus shade products from automatic pergolas to retractable awnings and motorized solar screens.
  • Interior trades cover painting, tiling, plumbing, electrical, HVAC and flooring, from small bathroom refreshes to multi-floor makeovers.
  • Also renovates and maintains commercial premises such as restaurants and retail stores.
  • Head office sits on Rathburn Road East in Mississauga, with work across the Greater Toronto Area.
General contracting · Home renovations · Decks and landscaping · Awnings and pergolas · Commercial renovations Mississauga
Visit website Call 647-994-7216
4.9 from 153 Google reviews

Ace Build Contracting

Mississauga design-build general contractor handling custom homes, second-storey additions, legal basements and major renovations across the Greater Toronto Area.

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  • Founded in 2018, the company reports 1800+ projects completed.
  • Addition work covers second-storey additions and rear extensions planned around the house that is already there.
  • Legal basement projects come with coordinated drawings, inspections, entrances, kitchens and bathrooms.
  • Design-build jobs bring architectural design, engineering, project management and construction together under one team.
  • Its service list also includes garden suites, commercial renovations and project management.
Custom homes · General contracting · Home additions · Legal basements · Garden suites Mississauga
Visit website Call 905-904-3511
4.9 from 147 Google reviews

Ranks 07 to 10

Reno Quarter

Mississauga renovation contractor doing full-home renovations, kitchens, bathrooms and basements, from layout redesigns to new cabinetry and tile.

5.0 647-923-6422CallWebsite

310Reno Design and Renovation

Mississauga design and renovation company doing basements and second suites, kitchens, bathrooms, additions and full rebuilds across Toronto and the GTA.

4.9 905-273-6682CallWebsite

M & D Buildings

Mississauga residential and commercial contractor offering architectural and structural design, new builds, additions, and kitchen and bathroom remodels.

4.9 905-593-0909CallWebsite

Artifex Reno

Mississauga-based renovation firm doing gut-to-finish bathrooms, custom millwork, saunas and full-scale remodels across Toronto and the GTA.

5.0 647-223-4051CallWebsite

Compare the firms

FirmBest forServicesGoogle ratingArea
013M RenovationsBasement renovations plus framing and drywallBasement renovations · Kitchen renovations · Bathroom renovations · Framing and drywall · Custom decks5.0Mississauga
02Cozy CasaCustom homesCustom homes · Lifestyle basements · Design-build · Legal secondary suites · Home additions5.0Mississauga
03Sky Home RenovationLegal basement finishingLegal basement finishing · Custom home renovations · Kitchen renovations · Bathroom renovations4.9Brampton, serves Mississauga
04Osoba Renos & DesignCondo renovationsBathroom renovations · Full home renovations · Basement renovations · Condo renovations5.0Mississauga
05HandyBrosRenovations paired with decks and shade structuresGeneral contracting · Home renovations · Decks and landscaping · Awnings and pergolas · Commercial renovations4.9Mississauga
06Ace Build ContractingCustom homes and second-storey additionsCustom homes · General contracting · Home additions · Legal basements · Garden suites4.9Mississauga
07Reno QuarterKitchen and bathroom layout changesFull home renovations · Kitchen renovations · Bathroom renovations · Basement renovations5.0Mississauga
08310Reno Design and RenovationBasement suites and structural wall removalsBasements and second suites · Kitchen renovations · Bathroom renovations · Home additions · Wall removal4.9Mississauga
09M & D BuildingsProjects needing design and construction togetherNew builds and additions · General contracting · Architectural design · Kitchen renovations · Bathroom renovations4.9Mississauga
10Artifex RenoGut-to-finish bathrooms with custom millworkBathroom renovations · Custom millwork · Custom saunas · Structural interiors · Full-scale remodelling5.0Mississauga

What to check before hiring a general contractor in Mississauga

Five things to confirm with any firm, on this list or not, before you sign. The rules below are Ontario's and Mississauga's.

  1. Registration with the WSIB

    Ask the firm for a clearance certificate from the WSIB, which confirms it is registered for workers' compensation and its account is in good standing. The certificate confirms the firm is registered with the WSIB and up to date on its premiums, so check its dates cover your job.

  2. Liability insurance

    Ask for a certificate of insurance that names the firm and shows commercial general liability coverage in force for the dates of your job, and check that the subcontractors it brings in are covered too.

  3. The building permit from Mississauga

    Building permits for homes in Mississauga come from the City of Mississauga, and structural work, additions, new plumbing and electrical work and basement finishing usually need one. Agree in writing who applies for the permit and books the inspections.

  4. A written contract

    Get the scope of work, the payment schedule tied to stages of the work, start and finish dates, how changes are agreed and priced, and who handles permits and cleanup, all in one signed contract before any work starts.

  5. The warranty

    For a new house: a new house in Ontario must be built by a builder licensed by the Home Construction Regulatory Authority (HCRA) and comes with Tarion's warranty: one year on workmanship and materials, two years on items such as water penetration and the electrical, plumbing and heating systems, and seven years on major structural defects. For renovation work, get the firm's own workmanship warranty in writing.

Types of general contractor in Mississauga

The 10 firms on this list fall into 3 groups, read from what each firm's own site says it does and how it is listed on Google.

Renovation companies7

Renovation companies renovate existing homes, one room at a time or all of it at once.

Design-build firms2

Design-build firms design the project and build it under one contract, so one firm answers for the drawings and the work.

General contractors1

General contractors run building projects of many kinds and bring in the trades each job needs.

General contractors in Mississauga: common questions

What does a general contractor do on a home project?

A general contractor runs the job from start to finish: pricing it, booking and supervising the trades, ordering materials, arranging inspections and keeping the schedule. You deal with one firm instead of hiring the framer, plumber, electrician and drywaller yourself.

Do I need a building permit for a renovation?

Usually, for anything structural, for new plumbing or electrical work, and for most basement finishing, additions and decks. Your municipality sets the rules and issues the permit. Many general contractors apply for it as part of the job, so agree who is responsible before you sign.

What should a renovation contract include?

A written scope of work, the price and how changes will be priced, a payment schedule tied to stages of the work, start and finish dates, who pulls the permits, and the warranty on workmanship. Pay as stages are completed rather than most of the price up front.

Should I hire a general contractor or manage the trades myself?

Managing the trades yourself means booking, ordering and supervising each one, arranging the inspections and absorbing the delay when one trade holds up the next. A general contractor does that work and answers for the result. Running it yourself suits small jobs that need one or two trades.

How do I check that a contractor in Mississauga is registered with WSIB?

Ask the firm for a clearance certificate from the WSIB. The certificate confirms the firm is registered with the WSIB and up to date on its premiums, so check its dates cover your job.

Who issues building permits in Mississauga?

Building permits for homes in Mississauga come from the City of Mississauga. For general contracting, structural work, additions, new plumbing and electrical work and basement finishing usually need one. Many firms apply for the permit as part of the job, so agree who does it before you sign.

Before you get quotes

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