Kitchen Remodeling Professional

Cornerstone Construction

Name: Cornerstone Construction
Address: Oshawa, ON, L1H 5L4, CA
Telephone: 1-888-404-7383
Rating: 4.6

Oshawa, ON

BBB Accredited

1-888-404-7383 Website Email

1 Credential VerifiedServing Oshawa & area

75out of 100

Trusted

ProScore

This score reflects 22 Google reviews, ratings from 2 platforms in all, actively managed by the business.

How is this calculated?

Score updated: Oct 2026

About Cornerstone Construction

AI-generated summary from ProScore data sources

We are a kitchen remodeling contractor. Our business is based in Oshawa, Ontario.

Cornerstone Construction: ProScore 75, 3rd of 46 scored kitchen remodelers in Oshawa.
22 Google reviews (4.6 stars; median 19) for Cornerstone Construction, ahead of 29 of 45 kitchen remodelers.

Ratings Across Platforms

Aggregated from independent sources. Only ProScore shows all.

3 sources · 67 reviews

GoogleListing found

Google Business Profile reviews

4.6/5

22 reviews

Review platform BListing found

Independent review platform · name withheld by policy

5.0/5

45 reviews

BBBListing found

Better Business Bureau · accredited · as of March 2026

A+Rating · accredited

Not found on 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

Trusted Level

Scores in ProScore’s Trusted tier — strong, consistent signals across the sources ProScore checks.

Well Reviewed

4.6 star average on Google with 22 reviews.

Rated on Multiple Platforms

Independently rated on 2 review platforms — ratings that agree across sources are harder to game.

BBB Accredited · A+

Better Business Bureau accredited with an A+ rating.

Profile Claimed

The business has claimed this profile and can keep its details current.

Google Review Breakdown

22 total

Photos & Work

1 photo

Other top rated kitchen remodeling in Oshawa

Classic Kitchens Designs & Renovations Ltd.

Oshawa

4.9(48)

Paradisaic Building Group

Oshawa

5(53)

Clarity Kitchens & Countertops

More kitchen remodelers in Oshawa

Frequently Asked Questions

Is Cornerstone Construction licensed?

Licensing status has not been verified for Cornerstone Construction. Contact them directly to confirm current credentials before hiring.

Does Cornerstone Construction have insurance?

WSIB insurance status is not verified for Cornerstone Construction. Request proof of workplace insurance and liability coverage before hiring.

What is Cornerstone Construction’s rating?

Cornerstone Construction has a ProScore Trust Score of 75/100 (Trusted), calculated from 3 data sources including 22 Google reviews.

Where is Cornerstone Construction located?

Cornerstone Construction is a kitchen remodeling serving Oshawa, Ontario. You can reach them at 1-888-404-7383. View their full profile on ProScore for reviews and credentials.

Business Details

804 Ritson Rd S rear unit, Oshawa, ON L1H 5L4

Kitchen Remodeling

View on Google Maps

Services Offered

Kitchen designCabinet installationCountertop installationBacksplash installationAppliance installationKitchen renovation

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 Kitchen Remodeling FAQs in Oshawa View all guides →

Data Transparency

Sources: Google, BBB, and major review platforms
Score computed: October 13, 2026

More kitchen remodeling in Oshawa →|All kitchen remodeling in Ontario →|All contractors in Oshawa →

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

Are you the owner of this business? Dispute this score

Still researching?

Read the hiring guide →Check cost estimates →

Before you hire, read: 5 questions to ask every kitchen remodeling →

Compare Kitchen Remodeling Contractors in Oshawa

See how Cornerstone Construction ranks against other kitchen remodeling in Oshawa on ProScore.

View ranked list of kitchen remodeling in Oshawa →

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.