General contractors

The 10 Best General Contractors in Toronto, ON

Updated 132 firms checked10 ranked

This list ranks 10 general contractors in Toronto, ON. It starts from Google Maps searches for general contractors and related building work in Toronto: 132 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

Sosna Home Renovations

Best overall

Toronto design and renovation company handling kitchens, bathrooms, basements, additions and full-home renovations across the GTA.

Updated

Why it ranks here

  • Has been renovating homes in Toronto and the GTA for more than 20 years.
  • The firm is a member of the Canadian Home Builders' Association.
  • Follows a 10-step process whose consultation stage includes laser measurements of the home.
  • Each client works with an assigned designer and project manager as one point of contact.
  • Books new projects at least 3 to 4 months ahead rather than starting right away.
  • Takes on the full job or none of it, and does not work with tradespeople the homeowner picks.
Full-home renovations · Kitchen renovations · Bathroom renovations · Basement renovations · Home additions Vaughan, serves Toronto
Visit website Call 416-888-7366
5.0 from 103 Google reviews

Astaneh Construction

Best for second-storey additions

Toronto general contractor building custom homes and handling full-home renovations, rear extensions and second-storey additions across the GTA.

Updated

Why it ranks here

  • Established in 2013 and run with founder-led guidance on its projects.
  • Recognized by the Quality Business Awards as Toronto's Best General Contractor in 2024.
  • Named in Best of Houzz for service in both 2023 and 2024.
  • Is affiliated with RenoMark, BILD and the NKBA.
  • Its renovations come with a one-year workmanship warranty from handover.
  • Clients get a single point of contact rather than separate contractors, designers and consultants.
Custom homes · Full-home renovations · Home additions · Architectural drawings · Project management Toronto
Visit website Call 416-312-8015
5.0 from 119 Google reviews

The Foundation Kings

Best for basement renovations

Toronto construction company taking on basement renovations and general contracting work.

Updated

Why it ranks here

  • Rated 5.0 from 90 Google reviews, level with the top rating on this list
  • Its services include basement renovations and general contracting
Basement renovations · General contracting Toronto
Visit website Call 416-565-5464
5.0 from 90 Google reviews

Eastern Western Construction

Best for insulated concrete form builds

Toronto design-build company doing custom homes, additions and full-scale kitchen, bathroom, basement and full-house renovations.

Updated

Why it ranks here

  • Founded by Yiannis Goniadis, who comes from a family of builders and started in construction at seventeen.
  • Accepts only new builds, home additions and full-scale renovations in Toronto and the GTA at present.
  • The company reports completing hundreds of projects for its clients.
  • Lists insulated concrete form construction among its services, next to custom homes and additions.
  • The team includes an architectural designer and a tile installer working with the general contractor.
  • Service area takes in Ajax, Pickering and Scarborough through to Vaughan, Brampton, Mississauga and Oakville.
Custom homes · Home additions · Full-house renovations · Insulated concrete forms · Design-build Toronto
Visit website Call 437-580-3557
5.0 from 67 Google reviews

KingsGate Luxury Homes

Custom home builder working across Toronto and the GTA on new custom homes, major renovations and additions.

Updated
  • Won the Consumer Choice Award for Toronto Central in 2021, 2022, 2023 and 2025.
  • Holds the Top Choice Award Mark of Excellence for 2022, 2023, 2025 and 2026.
  • Received the Best of Houzz award for service in 2020, 2021, 2022, 2023 and 2024.
  • Has 20+ years of experience behind its custom home and renovation work.
  • Tracks each build by milestones, documents decisions early and sets out the schedule impact of change orders.
  • Has built custom homes in North York, Thornhill and Whitchurch-Stouffville.
Custom homes · Major renovations · Home additions · Construction management · Interior design North York
Visit website Call 416-888-2288
5.0 from 94 Google reviews

SMS Contractors

Scarborough-based contractor doing full-home, kitchen, bathroom and basement renovations plus restoration work for GTA homes and businesses.

Updated
  • Reports 100+ completed projects and 12 years of industry experience.
  • Each project is run by the firm's own crew, with the same people on site every day.
  • Also restores homes and commercial properties after water, fire, storm and structural damage.
  • Based in Scarborough, the company works across the Greater Toronto Area.
Basement conversions · Full-home renovations · Kitchen and bathroom renovations · Restoration · Commercial construction Scarborough
Visit website Call 647-760-2911
5.0 from 65 Google reviews

Ranks 07 to 10

Violet Build

Toronto custom home builder and renovator handling full-home, condo, kitchen, bathroom and basement projects plus additions across the GTA.

5.0 905-401-5222CallWebsite

Kristal Renovations

Toronto general contractor doing kitchen, bathroom, basement and full-home renovations for houses and commercial spaces across the GTA.

5.0 437-849-7576CallWebsite

The Reno Pros

Toronto general contractor doing basement, bathroom and large-scale home renovations, custom new builds and ADUs, plus commercial work.

5.0 416-561-6144CallWebsite

Addison Design & Build

Toronto design-build firm handling home additions, custom homes, major renovations and basement underpinning across the city's neighbourhoods.

5.0 416-732-7850CallWebsite

Compare the firms

FirmBest forServicesGoogle ratingArea
01Sosna Home RenovationsComplex renovations planned months aheadFull-home renovations · Kitchen renovations · Bathroom renovations · Basement renovations · Home additions5.0Vaughan, serves Toronto
02Astaneh ConstructionSecond-storey additionsCustom homes · Full-home renovations · Home additions · Architectural drawings · Project management5.0Toronto
03The Foundation KingsBasement renovationsBasement renovations · General contracting5.0Toronto
04Eastern Western ConstructionInsulated concrete form buildsCustom homes · Home additions · Full-house renovations · Insulated concrete forms · Design-build5.0Toronto
05KingsGate Luxury HomesCustom homes with interior designCustom homes · Major renovations · Home additions · Construction management · Interior design5.0North York
06SMS ContractorsScarborough homes needing renovation or restorationBasement conversions · Full-home renovations · Kitchen and bathroom renovations · Restoration · Commercial construction5.0Scarborough
07Violet BuildCondo and full-home renovationsBasement renovations · Full-home renovations · Custom homes · Home additions · Condo renovations5.0Toronto
08Kristal RenovationsRoom updates to full-home renovationsFull-home renovations · Kitchen renovations · Bathroom renovations · Basement renovations · General contracting5.0North York
09The Reno ProsLarge renovations and ADU builds in TorontoBasement renovations · Home renovations · Custom new builds · Accessory dwelling units · Commercial renovations5.0Toronto
10Addison Design & BuildAdditions and basement lowering in Toronto housesHome additions · Custom homes · Home renovations · Basement underpinning · Basement lowering5.0Toronto

What to check before hiring a general contractor in Toronto

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

    Building permits for homes in Toronto come from the City of Toronto, 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 Toronto

The 10 firms on this list fall into 4 groups, read from what each firm's own site says it does and how it is listed on Google.

General contractors4

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

Renovation companies2

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.

Home builders2

Home builders build new houses as their main work, and some take on additions and major renovations too.

General contractors in Toronto: 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 Toronto 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 Toronto?

Building permits for homes in Toronto come from the City of Toronto. 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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