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Willemsen & Son Constructions Pty Ltd

Name as registered with the Building and Plumbing Commission
ABN
66 359 375 084
ACN
158 939 701
BPC registration
CDB-U 58443
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
WILLEMSEN & SON CONSTRUCTIONS PTY LTD
Registered as
Company
Domestic Builder - Unlimited
VIC · CDB-U 58443 · Current · expires 11 Oct 2029ok
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
The Trustee for Willemsen Family Trust
ABN
66 359 375 084
ABN status
Active — GST registeredok
ABN status from
13 Jun 2012
Entity type
Discretionary Trading Trust
Registered location
VIC 3198
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 Willemsen & Son Constructions a registered builder in Victoria?

As at 24 Aug 2026, the Building and Plumbing Commission register lists Willemsen & Son Constructions as holding a Domestic Builder - Unlimited registration (CDB-U 58443) — status: Registered. Confirm the current status on the official BPC register.

Does Willemsen & Son Constructions have any disciplinary or prosecution records?

As at 24 Aug 2026, Baserock found no disciplinary or prosecution actions for Willemsen & Son Constructions 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 Willemsen & Son Constructions legally perform?

As at 24 Aug 2026, the BPC register lists Willemsen & Son Constructions 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 Willemsen & Son Constructions'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 Willemsen & Son Constructions's ABN, and is it active?

Willemsen & Son Constructions's ABN is 66 359 375 084. 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.

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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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