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General Contractor Professional

Core Builders logoCore Builders

London, ON
Compare with similar general contractor providers in London →
WSIBHCRA Licensed
+1 519-433-0293 Website(opens in new tab)
2 Credentials Verified
ProScore
5★ Google|2/4 Sources

This score reflects 7 verified reviews, across 2 platforms, licensed and verified.

How is this calculated?
Data verified: Jun 2026

About Core Builders

AI-generated summary from verified data sources

Core Builders provides construction and renovation services to London and nearby regions. Rated 5.0★ on Google with 7 reviews.

G
Google
5★ (7)
C
Review Site C
Excellent
Rated on 2 independent platforms
Government-licensed
WSIB coverage confirmed

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What Customers Say

AI analysis of 1-2 verified Google reviews

Top Strengths

Exceptional project management with ability to handle scope changes gracefully and maintain budget estimates throughout
Outstanding cleanliness and respect for clients' homes, with clean job sites maintained daily
Excellent communication and transparency - clients never left guessing about project status and next steps
project managementbudget controlcommunicationclean job siteadditions

Ratings Across Platforms

Aggregated from independent sources. Only ProScore shows all.

2 of 4 verified
G
Google
5/5
B
Review Site B
Not found
B
BBB
Not found
C
Review Site C
Excellent
The ProScore Trust Score aggregates ratings from all verified sources, weighted by review volume, recency, and platform credibility.

Things to Know

WSIB Verified

Workplace Safety and Insurance Board coverage confirmed — you're protected.

HCRA Licensed

Licensed by the Home Construction Regulatory Authority.

Google Review Breakdown

7 total
5
7
4
0
3
0
2
0
1
0

Featured Review

Verified review from Google

“

Gulian was so great to work with that we miss having him around now that our project is complete. Core Builders respected our home and left a clean job site at the end of each day. Gulian is so even keeled. We were never made to feel that any of our new ideas, added scope or change in direction were ever a problem. Gulian offered suggestions on where to spend and where to save for best value. He was excellent at communicating where we were at and what was next. We were never left guessing. I ha

J
Jodi Austin
Google Review

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Homeowner Guides

How much does this service cost in Ontario?Red flags when hiringGeneral Contractor FAQs in LondonView all guides →

Frequently Asked Questions

Is Core Builders licensed?
Yes, Core Builders is registered with HCRA (Home Construction Regulatory Authority), verified by ProScore.
Does Core Builders have insurance?
Yes, Core Builders has verified WSIB (Workplace Safety and Insurance Board) coverage, which protects homeowners from liability if a worker is injured on the job.
What is Core Builders’s rating?
Core Builders has a ProScore Trust Score of 62/100 (Good), calculated from 2 verified data sources including 7 Google reviews.
Where is Core Builders located?
Core Builders is a general contractor serving London, Ontario. You can reach them at +1 519-433-0293. View their full profile on ProScore for verified reviews and credentials.

Business Details

10 Rosel Crescent, London, ON N6C 2L2
General Contractor
View on Google Maps

Services Offered

Home renovationsAdditionsNew constructionProject managementPermit acquisitionDesign-build

Services & Info

Accessibility

Wheelchair-accessible parking lot

Credentials

HCRA Licensed Builder
HCRA Licensed Builder (B33230)
✓ Confirmed
Insurance
Not Confirmed
WSIB Coverage
✓ Confirmed

ProScore displays credential information as reported by contractors and third-party sources. Homeowners are encouraged to independently verify all credentials, licenses, and insurance prior to engaging any contractor.

Data Transparency

SourcesGoogle, major review platforms, and Ontario regulatory records
Last updatedJune 2026

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Checked by ProScore

What is the ProScore?

The ProScore aggregates ratings from multiple review platforms into a single score from 0 to 100. Unlike platforms that show only their own reviews, the ProScore gives you the complete picture. Scores are capped for providers with limited source verification.

≥80
Elite
≥65
Trusted
≥50
Good
≥30
Basic
<30
Caution

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