Yes, John Maas Builder Ltd has verified WSIB (Workplace Safety and Insurance Board) coverage, which protects homeowners from liability if a worker is injured on the job.

What is John Maas Builder Ltd’s rating?

John Maas Builder Ltd has a ProScore Trust Score of 49/100 (Basic), calculated from 1 data source including 1 Google review.

Where is John Maas Builder Ltd located?

John Maas Builder Ltd is a bathroom remodeling serving Kingston, Ontario. You can reach them at +1 613-541-9134. View their full profile on ProScore for reviews and credentials.

Business Details

384 Chelsea Rd, Kingston, ON K7M 3Z9

Bathroom Remodeling

View on Google Maps

Services Offered

Bathroom designTile installationVanity installationShower installationBathtub installationBathroom renovation

Credentials

HCRA Licensed Builder

HCRA Licensed Builder (B3046)

✓ Confirmed

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 · HCRA Ontario Builder Directory

Homeowner Guides

How much does this service cost in Ontario?Red flags when hiring Bathroom Remodeling FAQs in Kingston View all guides →

Data Transparency

Sources: Google and Ontario regulatory records
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is informational only — not a guarantee, endorsement, or recommendation — and the data behind it may be incomplete or out of date.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.