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General Contractors · Mississauga, ONLast reviewed October 2026

5 Best General Contractors in Mississauga, ON (2026)

TenBestFind ranks 5 general contractors in Mississauga, ON. Each company was checked against the criteria set out under How we chose. Lists name up to ten companies, and this one stops at 5 because only 5 met them. The list was last reviewed on October 31, 2026.

The best general contractors in Mississauga, ON include HMH Construction (4.9 stars, 76 Google reviews), M & D Buildings (4.9, 87), Ace Build Contracting (4.9, 148), 310RENO Design and Renovation (4.9, 113) and COZY CASA (5.0, 70). Each holds at least 4.5 stars from 50 or more Google reviews, has a working website and an office address inside Mississauga, and was checked on 2026-10-31.

5 companies reviewed5 rankedHow We Rank

The Ranking

Our top 5 general contractors in Mississauga

Mississauga is mostly a city of detached and semi-detached homes built from the 1970s to the 2000s, in areas such as Erin Mills, Meadowvale, Cooksville, Clarkson and Malton. Owners here tend to hire a general contractor when a project goes past finishes: a rear addition, a second storey, a legal basement apartment, a garden suite, a wall removal that needs an engineer, or a gut renovation across several floors. Those jobs need drawings, a building permit and inspections, and one firm that answers for all of it. Ontario has no provincial licence for renovation contractors. Building permits come from the City of Mississauga building division, so ask who applies for the permit and who books each inspection. Builders of new homes in Ontario must be licensed by the Home Construction Regulatory Authority (HCRA), and the Tarion warranty covers new homes, not renovations of an existing house, so a renovation is protected by your contract and the contractor's own written warranty. Ask for a WSIB clearance certificate and liability insurance proof before work begins, check whether the City of Mississauga requires a business licence for the work (verify with the city), and look up any HCRA licence number a builder quotes on the HCRA public register. This ranking covers five companies with at least 50 Google reviews and an office inside Mississauga. Four of them also appear in our Home Remodeling ranking because they handle both kinds of work. Most work from office suites or industrial units, so book an appointment rather than visiting. Each company page lists the strengths and the points to confirm, including phone numbers that differ between a website and its Google listing.

Showing 5 of 5
  1. 01

    Best for basement entrances, second units and permit-heavy jobs

    HMH CONSTRUCTION

    4.9(76 Google reviews)
    Best forBasement entrances, second units and permit-heavy renovations
    In businessNot listed
    WarrantyNot listed
    EmergencyNot listed

    Why we picked them

    4.9 stars from 76 Google reviews, with drawings, engineering, permits and inspections handled in house on every quote.

    What we like

    • Engineering and permits handled in house
    • WSIB and liability insurance, proof on request
    • 25 plus years of experience stated

    Things to consider

    • Website phone differs from the Google listing number

    Services

    • Kitchen remodeling
    • Bathroom remodeling
    • Basement remodeling
    • Whole-home renovation
    • Permitting and inspections
    Key details
    Best for
    Basement entrances, second units and permit-heavy renovations
    Service area
    Mississauga
    Address
    32 Village Centre Pl Ste 101, Mississauga, ON
    Credentials
    WSIB coverage
  2. 02

    Best for design, permits and construction in one scope

    M & D Buildings

    4.9(87 Google reviews)
    Best forHomeowners who want permits and design handled with the build
    In businessNot listed
    WarrantyNot listed
    EmergencyNot listed

    Why we picked them

    4.9 stars from 87 Google reviews, with architectural design, general contracting, new builds and additions under one roof.

    What we like

    • Permit and project management listed
    • WSIB registered and fully insured, per its site
    • Additions, kitchens, baths and basements

    Things to consider

    • Also does commercial work and names no owners

    Services

    • Kitchen remodeling
    • Bathroom remodeling
    • Basement remodeling
    • Home additions
    • Whole-home renovation
    • Permitting and inspections
    Key details
    Best for
    Homeowners who want permits and design handled with the build
    Service area
    Mississauga
    Address
    5910 Greensboro Dr, Mississauga, ON
    Credentials
    WSIB registered member
  3. 03

    Best for additions, legal basements and custom homes

    Ace Build Contracting

    4.9(148 Google reviews)
    Best forAdditions, legal basements and custom homes under one HCRA-licensed team
    In business8 years
    WarrantyOne-year workmanship warranty, per its website
    EmergencyNot listed

    Why we picked them

    4.9 stars from 148 Google reviews, the largest review base here, with a design-build process that names zoning, permits and inspections.

    What we like

    • HCRA licensed builder mark and WSIB cover stated
    • Design-build covers drawings, engineering and permits
    • Legal basements, garden suites and custom homes

    Things to consider

    • No licence numbers published and warranty is one year

    Services

    • Design-build
    • Whole-home renovation
    • Permitting and inspections
    Key details
    Best for
    Additions, legal basements and custom homes under one HCRA-licensed team
    Service area
    Mississauga
    Address
    1445 Bonhill Rd #22A
    Years in business
    8 years
    Warranty
    One-year workmanship warranty, per its website
    Financing
    Available
    Credentials
    HCRA licensed custom home builder
  4. 04

    Best for larger multi-room renovations

    310RENO Design and Renovation

    4.9(113 Google reviews)
    Best forMulti-room renovations with a lifetime workmanship warranty
    In business24 years
    WarrantyGold Seal Limited Lifetime Warranty on installations, as stated on the company website
    EmergencyNot listed

    Why we picked them

    4.9 stars from 113 Google reviews and a stated Gold Seal Limited Lifetime Warranty on installations.

    What we like

    • Lifetime warranty stated on its website
    • Large finished kitchens and basements
    • Covers additions and wall removal

    Things to consider

    • Office suite address and website branded for Toronto

    Services

    • Kitchen remodeling
    • Bathroom remodeling
    • Basement remodeling
    • Home additions
    • Whole-home renovation
    Key details
    Best for
    Multi-room renovations with a lifetime workmanship warranty
    Service area
    Mississauga
    Address
    4 Robert Speck Pkwy #1500, Mississauga, ON
    Years in business
    24 years
    Warranty
    Gold Seal Limited Lifetime Warranty on installations, as stated on the company website
    Credentials
    Gold Seal Limited Lifetime Warranty on installations
  5. 05

    Best for design-build projects under a named builder

    COZY CASA

    5.0(70 Google reviews)
    Best forDesign-build basements, bathrooms and custom homes
    In businessNot listed
    WarrantyNot listed
    EmergencyNot listed

    Why we picked them

    5.0 stars from 70 Google reviews, with design and construction run by named founder Billy Atwal under an HCRA licensed builder mark.

    What we like

    • Founder Billy Atwal named on the site
    • HCRA Licensed mark shown
    • Help with drawings and building permits

    Things to consider

    • Leans toward larger design-build jobs, no licence number shown

    Services

    • Bathroom remodeling
    • Basement remodeling
    • Home additions
    • Design-build
    • Permitting and inspections
    Key details
    Best for
    Design-build basements, bathrooms and custom homes
    Service area
    Mississauga
    Address
    4230 Sherwoodtowne Blvd Ste 200, Mississauga, ON
    Credentials
    HCRA Licensed

Side by Side

Compare the top general contractors in Mississauga

Ranking position reflects our editorial review, not customer ratings.

Editorial comparison of the 5 ranked companies. Customer ratings, where shown, come from the source named on each company profile.
RankCompanyBest forKey servicesService areaGoogle ratingEmergencyProfile
01HMH CONSTRUCTIONBasement entrances, second units and permit-heavy renovationsKitchen remodeling, Bathroom remodeling, Basement remodelingMississauga4.9(76)Not listedView
02M & D BuildingsHomeowners who want permits and design handled with the buildKitchen remodeling, Bathroom remodeling, Basement remodelingMississauga4.9(87)Not listedView
03Ace Build ContractingAdditions, legal basements and custom homes under one HCRA-licensed teamDesign-build, Whole-home renovation, Permitting and inspectionsMississauga4.9(148)Not listedView
04310RENO Design and RenovationMulti-room renovations with a lifetime workmanship warrantyKitchen remodeling, Bathroom remodeling, Basement remodelingMississauga4.9(113)Not listedView
05COZY CASADesign-build basements, bathrooms and custom homesBathroom remodeling, Basement remodeling, Home additionsMississauga5.0(70)Not listedView

Coverage

General contracting companies serving Mississauga and nearby areas

Most companies in this ranking work across Ontario and the surrounding suburbs. Coverage and travel fees vary, so confirm your address is inside the service area before scheduling.

  • Mississauga

Nearby rankings

Service coverage across Mississauga. Individual company areas are listed on each profile.

Methodology

How we chose the best general contractors in Mississauga

We started from Google Maps searches for general contractor in Mississauga, ON, general contractor company Mississauga and design build contractor Mississauga, run on 2026-10-31. Companies were kept only if they held 4.5 stars or more from at least 50 Google reviews, were operational, had a working own website and a real logo, and had a business address inside Mississauga. We set aside commercial-only builders, handyman firms, home-based or shared-suite addresses, thin or doorway sites, and companies with fewer than 50 reviews. The list follows Google Maps order among the companies that passed; COZY CASA did not appear in the general contractor searches and is placed last after appearing in our remodeling search. No company paid for a place. Ratings and review counts for the new listing were read on 2026-10-31 and for the others on 2026-10-30. Credentials come from each company's own website, and Ontario has no provincial renovation licence.

Read our full ranking methodology
Evaluated5
Ranked5

Hiring

How to choose a general contractor in Mississauga

  1. Verify insurance and credentials

    Ask for a current certificate of insurance and confirm registration or licensing with the authority that issues it, not with the company.

  2. Ask for a written estimate

    Scope, materials, removal, disposal and who pulls the permit should all be named on the page rather than agreed on the doorstep.

  3. Compare multiple quotes

    Two or three bids on the same scope. A number far below the others usually means something has been left out of it.

  4. Understand the warranty

    Separate the manufacturer's warranty on materials from the company's own warranty on the work, and get both in writing.

  5. Ask who performs the work

    Find out whether the crew are employees or subcontractors, and who supervises them on the day.

  6. Check recent local projects

    Ask for addresses or photographs of comparable jobs finished nearby in the last year or two.

  7. Avoid high-pressure sales

    A discount that expires today, or a knock on the door after a storm, is a reason to slow down rather than sign.

  8. Get everything in writing

    Change orders, timeline and payment schedule included, before the first payment changes hands.

Questions to ask before hiring

0 of 10 asked

Red flags

  • No verifiable local business address or registration
  • Pressure to sign on the first visit
  • A demand for full payment up front
  • An offer to cover or waive your insurance deductible
  • Refusal to put warranty terms in writing
  • A quote that will not itemize scope

Keep Going

Related home services in Mississauga

FAQ

General contracting companies in Mississauga FAQs

Do I need a licence to hire a general contractor in Mississauga?

Ontario has no provincial licence for renovation contractors. Builders of new homes must be licensed by the HCRA, so check any HCRA number on its public register. Confirm with the City of Mississauga whether a business licence applies, and ask for a WSIB clearance certificate and liability insurance proof.

How much does a general contractor cost in Mississauga?

None of these companies publishes fixed prices, because cost depends on scope, engineering, permits and finishes. Ask at least two for an itemized written quote with allowances, a milestone payment schedule and start and finish dates, then compare them line by line.

Do I need a building permit for an addition or legal basement in Mississauga?

Usually yes for an addition, a new separate entrance, a second unit or a structural wall removal, though it depends on the work. Check with the City of Mississauga building division, and put in the contract who applies for the permit and who books inspections.

Editorial Record

About this ranking

Originally published
October 2026
Last reviewed
October 2026
Companies evaluated
5

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