The 10 Best General Contractors in London, ON

Updated Oct 2026131 firms checked10 ranked

This list ranks 10 general contractors in London, ON. It starts from Google Maps searches for general contractors and related building work in London: 131 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

Why it ranks here

Arne Madsen started the company in 1989 as Creative Carpentry Renovations, and it is still a family-owned business.
Is RenoMark verified, which commits it to following a nationally recognized code of conduct.
Offers net zero builds, and a 100% net zero build is among its featured projects.
Splits renovation work by floor, covering main, upper and lower levels, with additions and specialty projects as separate services.

Why it ranks here

Cuts into foundations to fit larger basement windows, either for egress or simply for more daylight.
Each installation is the personal responsibility of owner Sam Dieleman.
Gives a 5-year warranty covering installation-related problems and the labour on manufacturer claims.
North Star windows, made in St. Thomas, Ontario, are its main line, with Gentek, Vinylbuilt and VWD also available.
Buys windows and doors direct from the manufacturer and aims to supply Canadian-made products to Energy Star specifications.
Beyond windows and doors, it takes on siding, kitchens, bathrooms and full basement renovations.

Why it ranks here

Has been renovating bathrooms, kitchens, basements and homes for over 20 years.

Why it ranks here

Has completed renovation projects across London and nearby communities since 2019.
Puts its count of completed renovation projects at 110+.
Backs its renovations with a 2-year workmanship guarantee.
Builds home additions and legal secondary units as well as finishing basements.
Each job starts from a written scope of work and a documented timeline.
Also carries out restoration and reconstruction work after fire and water damage.

Family-owned firm that has been renovating homes in London for more than 10 years.
The crew is made up of six craftsmen working across tile, bathroom and flooring jobs.
Its flooring work includes hardwood installation, alongside its tile and backsplash jobs.

Has over 30 years of experience in home renovation and new home building.
Builds new homes in the London, Burlington and Oakville areas.
Its own team takes each job from design and blueprints through construction and clean-up.
Builds custom wall units and bars, and also offers painting and deck construction.
Hill Developments draws up a detailed proposal for each of its projects.

Ranks 07 to 10

Number 7: Evergreen Design + Build

London, Ontario design-build firm doing full-home renovations, home additions, kitchens, bathrooms and basements, as well as custom homes.

5.0 519-495-0157Call Website

Number 8: Riverside Construction

London, Ontario design-build firm renovating homes and commercial spaces, from kitchens, bathrooms and extensions to medical and dental offices.

4.9 519-614-9044Call Website

Number 9: Vantage Built Construction

London, Ontario renovation contractor doing home and garage additions, basement and kitchen renovations, and general contracting.

5.0 519-860-8426Call Website

Number 10: MSM Renovations

London, Ontario renovation contractor doing bathroom remodels, plus drywall and ceiling T-bar installation.

5.0 519-694-4999Call Website

Compare the firms

Rank	Firm	Best for	Services	Google rating	Area
01	CCR Build + Remodel	Net zero builds and full-home renovations	Custom homes · Basement renovations · Full-home renovations · Home additions · Net zero builds	Rated 5.0 out of 5 from 55 Google reviews	Middlesex Centre, serves London
02	Wayfarer Renovations	Egress and replacement windows	Basement renovations · Egress windows · Windows and doors · Kitchens and bathrooms · Siding	Rated 5.0 out of 5 from 50 Google reviews	London
03	Kirk's Renovations	Kitchen and bathroom renovations	Kitchen renovations · Bathroom renovations · Basement renovations · Home renovations · Decks and fences	Rated 4.9 out of 5 from 73 Google reviews	London
04	Coronation Construction	Additions and secondary units	Full home renovations · Kitchen renovations · Basement finishing · Additions and ADUs · Commercial renovations	Rated 5.0 out of 5 from 40 Google reviews	London
05	Silver Rock Contractor	Bathroom remodels and tile work	Bathroom renovations · Tile installation · Backsplash installation · Flooring installation	Rated 5.0 out of 5 from 44 Google reviews	London
06	Hill Developments	Family-owned renovations with custom wall units	Kitchen renovations · Basement finishing · Bathroom renovations · Custom wall units · Decks	Rated 4.9 out of 5 from 67 Google reviews	London
07	Evergreen Design + Build	Additions designed and built by one firm	Home additions · Full-home renovations · Kitchen renovations · Basement renovations · Custom homes	Rated 5.0 out of 5 from 35 Google reviews	London
08	Riverside Construction	Design-build home renovations in London	Design-build · Home renovations · Bathroom renovations · Kitchen renovations · Commercial renovations	Rated 4.9 out of 5 from 54 Google reviews	London
09	Vantage Built Construction	Additions and layout changes to existing homes	General contracting · Home additions · Garage additions · Basement renovations · Kitchen renovations	Rated 5.0 out of 5 from 32 Google reviews	London
10	MSM Renovations	Bathroom remodels, drywall and T-bar ceilings	Bathroom remodels · Drywall · T-bar ceilings	Rated 5.0 out of 5 from 29 Google reviews	London

What to check before hiring a general contractor in London

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

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.
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.
The building permit from London
Building permits for homes in London come from the City of London, 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.
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.
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 London

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.

Renovation companies5

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

Number 2: Wayfarer Renovations
Number 3: Kirk's Renovations
Number 4: Coronation Construction
Number 6: Hill Developments
Number 10: MSM Renovations

General contractors2

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

Number 1: CCR Build + Remodel
Number 5: Silver Rock Contractor

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.

Number 7: Evergreen Design + Build
Number 8: Riverside Construction

Home builders1

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

Number 9: Vantage Built Construction

General contractors in London: 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 London 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 London?

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

Corrections

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The 10 Best General Contractors in London, ON

Number 1: CCR Build + Remodel

Number 2: Wayfarer Renovations

Number 3: Kirk's Renovations

Number 4: Coronation Construction

Number 5: Silver Rock Contractor

Number 6: Hill Developments

Ranks 07 to 10

Number 7: Evergreen Design + Build

Number 8: Riverside Construction

Number 9: Vantage Built Construction

Number 10: MSM Renovations

Compare the firms

What to check before hiring a general contractor in London

Registration with the WSIB

Liability insurance

The building permit from London

A written contract

The warranty

Types of general contractor in London

Renovation companies5

General contractors2

Design-build firms2

Home builders1

General contractors in London: common questions

Before you get quotes

Contractor Deposit: How Much Is Normal in Each Province?

Do I Need a Building Permit to Renovate? Rules by Province

Construction Holdback: The 10% Rule Homeowners Must Follow

Has something on this list changed?