DBU Licence — Victoria, AU
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About the Licence
What is a Domestic Builder Unlimited (DBU)?
A Domestic Builder Unlimited (DBU) is the highest class of domestic building registration in Victoria, issued by the Building and Plumbing Commission (BPC). It authorises you to carry out, manage, and arrange all types of domestic building work — including new homes, extensions, renovations, and multi-dwelling developments — without restriction on scope or project value.
The DBU registration is essential to run your own building business in Victoria, take out building permits, and legally contract directly with homeowners for residential projects. Without it, you cannot legally carry out domestic building work valued over $10,000.
Registered by the BPC
The Building and Plumbing Commission (BPC) registers building practitioners in Victoria. Domestic Builder (Unlimited) is a class of building practitioner registration.
Domestic Builder — Unlimited
A DB-U practitioner can carry out, manage or arrange all components of domestic building work, including work associated with Class 1, 2, 4 and 10 buildings.
DB-U Examination
DB-U applicants may be required to complete the BPC examination. The new single DB-U exam replaces the former face-to-face interview and plan-based exam.
Skills & Experience Required
Applicants must demonstrate the skills, knowledge and recent relevant experience required for DB-U registration. A Technical Referee Report is used to verify relevant domestic building experience.
Home Warranty
From 1 July 2026, Home Warranty applies to eligible domestic building work valued at more than $20,000. Builders must arrange and pay the applicable premium before starting eligible work.
Minimum Financial Requirements
From 1 July 2026, domestic builders must meet Minimum Financial Requirements (MFR). These requirements assess financial capacity and determine a builder's Maximum Construction Capacity (MCC).
Why Our Exam Prep Plan is Best?
Our DBU Licence Exam Prep Plan is designed to help you prepare with a clear study path, realistic practice and the resources you need to approach your exam with confidence.
Exam-Focused Content
Study the key topics and knowledge areas relevant to the DBU Licence exam, all organised in one place.
Real Exam-Style Practice
Practise with exam-style questions designed to help you become familiar with the format and question types.
Detailed Explanations
Understand why an answer is correct, not just whether you got it right. Build stronger knowledge with clear explanations.
Study at Your Own Pace
Learn whenever it suits you. Access your preparation materials and practise from any device, on your own schedule.
The Exam
What Does the DBU Exam Cover?
The DBU knowledge exam spans six subject areas. The exam tests specific numbers, standards references, and legislation — not general concepts. This is exactly why targeted MCQ practice matters.
How to Get Registered
DBU Registration Requirements
Approved Qualification — Hold a Certificate IV in Building and Construction or higher (or equivalent trade qualification with relevant industry experience recognised by the BPC).
Industry Experience — Demonstrate sufficient hands-on experience carrying out, supervising, or managing domestic building work at the appropriate level.
Pass the Written Exam — Sit and pass the BPC's registration knowledge exam, testing your understanding of the Building Act 1993, NCC 2022, domestic building contracts, site management, and construction standards.
Fit and Proper Person — Pass identity and background checks confirming you are a fit and proper person to hold registration.
Application & Fee — Submit a completed BPC application with all supporting documents and the applicable registration fee.
FAQ's
What is a builder licence in Victoria?
A builder licence in Victoria is a formal registration issued by the Building and Plumbing Commission (BPC) that authorises a person to legally carry out, manage, or contract domestic building work. The type of licence — such as Domestic Builder Unlimited (DBU) — determines the scope and value of work you’re permitted to undertake.
What is BPC registration?
BPC registration is the process of becoming a licensed building practitioner in Victoria, administered by the Building and Plumbing Commission. It involves meeting qualification and experience requirements, passing the relevant knowledge exam, and completing a fit-and-proper-person check before registration is granted.
What is a Domestic Builder Unlimited (DBU) licence?
A Domestic Builder Unlimited (DBU) licence is the highest class of domestic building registration in Victoria. It authorises a builder to carry out, manage, or arrange all types of domestic building work — including new homes, extensions, and multi-dwelling developments — without restriction on project value.
How do I become a registered builder in Victoria?
To become a registered builder in Victoria, you need an approved qualification (such as a Certificate IV in Building and Construction), sufficient hands-on industry experience, a pass in the BPC’s registration knowledge exam, and to clear a fit-and-proper-person check before submitting your application with the required fee.
What is the BPC exam?
The BPC exam is the knowledge-based written test builders must pass as part of registration with the Building and Plumbing Commission. For DBU applicants, it replaces the former face-to-face interview and plan-based assessment with a single structured exam.
What is a DBU licence?
A DBU licence — short for Domestic Builder Unlimited — is a Victorian building registration that allows unrestricted domestic building work. It’s issued after meeting the BPC’s qualification, experience, and exam requirements, and is required to legally take out permits and contract directly with homeowners.
What is the Domestic Building Contracts Act 1995?
The Domestic Building Contracts Act 1995 is Victorian legislation governing residential building contracts, including rules on progress payments, variations, prime cost and provisional sums, and cooling-off periods. It’s a core knowledge area tested in the DBU exam, and DBUPrep’s practice questions cover it as part of the Building Acts, Regulations & Contracts chapter.
What is building practitioner registration in Victoria?
Building practitioner registration is the formal licensing system administered by the BPC that classifies and authorises individuals to perform specific types of building work in Victoria, ranging from limited domestic work through to unlimited registration classes like DBU.
What's the difference between Domestic Builder Limited and Unlimited?
A Domestic Builder Limited (DB-L) licence restricts the scope or value of building work you can undertake, while a Domestic Builder Unlimited (DBU) licence removes those restrictions entirely, allowing work on projects of any size or value, including multi-dwelling developments.
How do I get Domestic Builder Unlimited registration?
Domestic Builder Unlimited registration requires an approved building qualification, demonstrated industry experience (often verified through a Technical Referee Report), a pass in the BPC’s DBU knowledge exam, and a fit-and-proper-person check, followed by a completed application and fee to the BPC.
How does builder registration work in Victoria?
Builder registration in Victoria is managed by the Building and Plumbing Commission and involves meeting qualification and experience thresholds, passing a knowledge exam relevant to your registration class, and satisfying financial and character requirements before a licence is issued.
What kind of questions are on the BPC exam?
The BPC exam tests specific technical knowledge rather than general concepts — including site management and permits, the Building Act 1993 and Domestic Building Contracts Act 1995, AS1684 bracing and AS4440 roof truss standards, masonry and waterproofing codes, and National Construction Code (NCC 2022) requirements. DBUPrep’s practice tests are structured around these same six chapters.
What are the requirements for Domestic Builder Unlimited registration?
Domestic Builder Unlimited requirements include holding an approved qualification (or equivalent recognised experience), demonstrating sufficient hands-on domestic building experience, passing the BPC’s DBU exam, meeting Minimum Financial Requirements (from 1 July 2026), and passing a fit-and-proper-person check.
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