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Qantum Pty Ltd

Name as registered with the Building and Plumbing Commission
ABN
50 142 861 747
ACN
142 861 747
BPC registration
CDB-U 71133
Registered as
Company
Overview
Depending on the business, some information may not be publicly available. We'll include links to places you can confirm missing details if needed.

Verified

Registration is current on the Victorian building practitioner register
ABN is active and GST-registered
No disciplinary or prosecution actions on the BPC register

Check at the source

Domestic Building Insurance eligibility — check on BuildVic
Court cases, insolvency, ACCC, ASIC & WorkSafe — check the linked registers
Compiled from public records · as at 24 Aug 2026Facts only — not a rating or recommendation
Registered name
QANTUM PTY LTD
Registered as
Company
Domestic Builder - Unlimited
VIC · CDB-U 71133 · Current · expires 9 Sep 2031ok
What this means: An Unlimited class means no contract-value cap on that type of domestic work. Always confirm current registration for your project on the official BPC register.
Source: Building Practitioner Register, Building and Plumbing Commission (via DataVic) · as at 24 Aug 2026
Entity name
Qantum Pty Ltd
ABN
50 142 861 747
ABN status
Active — GST registeredok
ABN status from
1 Oct 2010
ACN
142 861 747
Entity type
Australian Private Company
Registered location
VIC 3171
Registered business names
Chain Building Group
What this means: These are the ABN-registered details for this entity. Check the name here matches the builder named on your quote, contract and insurance certificate.
Source: Data provided by the Australian Business Register. · as at 24 Aug 2026

Frequently Asked Questions

Is Qantum a registered builder in Victoria?

As at 24 Aug 2026, the Building and Plumbing Commission register lists Qantum as holding a Domestic Builder - Unlimited registration (CDB-U 71133) — status: Registered. Confirm the current status on the official BPC register.

Does Qantum have any disciplinary or prosecution records?

As at 24 Aug 2026, Baserock found no disciplinary or prosecution actions for Qantum in its snapshot of the BPC's published register. This is a summary of public records, not a clearance — confirm on the official register.

What type of building work can Qantum legally perform?

As at 24 Aug 2026, the BPC register lists Qantum in the following class: Domestic Builder - Unlimited. An Unlimited class has no contract-value cap on that type of domestic building work. Always confirm the current class on the official BPC register.

How can I verify Qantum's building registration?

Search the official Building and Plumbing Commission register at vba.vic.gov.au/tools/find-practitioner by name or registration number. Baserock's report summarises public records and is not a substitute for the official register.

What is Qantum's ABN, and is it active?

Qantum's ABN is 50 142 861 747. As at 24 Aug 2026, the Australian Business Register records this ABN as Active, and GST registered.

Are you this builder? If anything here is out of date or incorrect, email hello@baserock.com.au and we'll review it against the source record.

Request a correction
How to read this report.Baserock compiles publicly available and licensed records into a plain-English summary of what's on file. It reports facts as at the dates shown — it is not a rating, recommendation, or guarantee, and it doesn't replace confirming details directly with the Building and Plumbing Commission, reading the full records, or getting your own contract and legal advice before you sign. A listing on any register is a record, not a finding.
Australian Business RegisterBPC Building Practitioner RegisterASIC · Published Notices & Banned/DisqualifiedAFSA · Bankruptcy Register (paid)AustLII · VCAT decisionsDBI · VMIA / BPCReviews data from Google.

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