General Contractor Professional

Keystone Contracting INC

Mississauga, ON

+1 548-388-5555

Serving Mississauga & area

83out of 100

Elite

ProScore

This score reflects 21 Google reviews.

How is this calculated?

Score updated: Oct 2026

About Keystone Contracting INC

AI-generated summary from ProScore data sources

Keystone Contracting INC is a general contractor based in Mississauga operating six days a week and working on site. The business offers services in English, Hindi, and American Sign Language, with wheelchair-accessible parking and washroom facilities.

Keystone Contracting INC: ProScore 83, tied 17th of 192 scored general contractors in Mississauga.
21 Google reviews (5.0 stars; median 9) for Keystone Contracting INC, ahead of 157 of 208 general contractors.

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What Customers Say

AI analysis of 3 Google reviews

Top Strengths

Exceptional attention to detail and high-quality workmanship consistently mentioned across reviews

Strong professionalism and skilled staff with deep knowledgeability

Reliable project completion on time as promised

professionalon timequality workmanshipknowledgeablereliable

Ratings Across Platforms

Aggregated from independent sources. Only ProScore shows all.

1 source · 21 reviews

GoogleListing found

Google Business Profile reviews

5.0/5

21 reviews

Not found on 3 other platforms ProScore checks (Review platform B, BBB, Review platform C).

ProScore aggregates Google, the BBB and other major review platforms. Some sources are not named publicly.

How sources are weighted: ProScore methodology.

Things to Know

Elite Status

Scores in ProScore’s Elite tier — the highest level a General Contractor contractor can reach, earned from strong, consistent signals across the sources ProScore checks.

Highly Rated

Consistently rated 5.0 stars across 21 Google reviews.

What Reviews Highlight

Reviews mention: professional, on time, quality workmanship.

Google Review Breakdown

21 total

Featured Review

From Google

“

Keystone Contracting Construction Company delivered outstanding results from start to finish. Their team was professional, reliable and very knowledgeable.The project was completed on time with great attention to detail and high-quality workmanship.Communication was clear throughout and they made sure everything was done exactly as promised. I am extremely satisfied with their work and would highly recommend Keystone Contracting to anyone looking for dependable and top-quality construction servi

Khan

Google Review

Photos & Work

1 photo

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Frequently Asked Questions

Is Keystone Contracting INC licensed?

Licensing status has not been verified for Keystone Contracting INC. Contact them directly to confirm current credentials before hiring.

Does Keystone Contracting INC have insurance?

WSIB insurance status is not verified for Keystone Contracting INC. Request proof of workplace insurance and liability coverage before hiring.

What is Keystone Contracting INC’s rating?

Keystone Contracting INC has a ProScore Trust Score of 83/100 (Elite), calculated from 1 data source including 21 Google reviews.

Where is Keystone Contracting INC located?

Keystone Contracting INC is a general contractor serving Mississauga, Ontario. You can reach them at +1 548-388-5555. View their full profile on ProScore for reviews and credentials.

Business Details

1867 Bloor St, Mississauga, ON L4X 1T4

General Contractor

View on Google Maps

Hours

Monday8a.m.-11p.m.

Tuesday8a.m.-11p.m.

Wednesday8a.m.-11p.m.

Thursday8a.m.-11p.m.

Friday8a.m.-11p.m.

Saturday8a.m.-11p.m.

SundayClosed

Services Offered

Home renovationsAdditionsNew constructionProject managementPermit acquisitionDesign-build

Services & Info

Onsite services

Crowd

LGBTQ+ friendly

Other

LGBTQ+ friendly

Accessibility

Wheelchair accessible seatingWheelchair-accessible washroomWheelchair-accessible parking lot

Service options

Language assistance

Credentials

Insurance

Not Confirmed

Credentials are as reported by contractors and public sources — verify each with the contractor and the issuing authority before hiring.Check it yourself: WSIB clearance

Homeowner Guides

How much does this service cost in Ontario?Red flags when hiring General Contractor FAQs in Mississauga View all guides →

Data Transparency

Sources: Google
Score computed: October 13, 2026

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Checked by ProScore

What is the ProScore?

One score from 0 to 100 across every review platform and public registry ProScore checks. How the ProScore works

≥81

Elite

≥70

Trusted

≥54

Good

≥30

Basic

<30

Caution

—

Not yet rated

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A ProScore is informational only — not a guarantee, endorsement, or recommendation — and the data behind it may be incomplete or out of date. Before hiring, independently verify all credentials, including licences, insurance (including WSIB) and references, directly with the contractor and the issuing authority. Full data notice. Something wrong? Let us know.