ExamRoo

Domestic Builder (Unlimited) practice test

Victorian builder registration (DB-U)

AUSDomestic Builder Unlimited
PracticeTimed examFlashcards
Questions per test
40
Question pool
145 source-checked
Practice timer
60 minutes
Practice pass mark
80%

Timer and pass mark are our practice settings, not the official rules. Authority: Building and Plumbing Commission (BPC), Victoria. Review your mistakes bank →

Practice questions for Victorian Domestic Builder (Unlimited) registration: NCC 2025 Housing Provisions, Building Act 1993, Building Regulations 2018, Domestic Building Contracts Act 1995, security of payment and OHS. The Building and Plumbing Commission sets an online, open-book exam and does not publish its question count or pass mark; the 40 questions, 80% and 60 minutes here are practice settings only.

5 Most Common Domestic Builder (Unlimited) Sample Questions & Answers

Preview 5 practice questions with answers and explanations that name their source.

Sample Question 1 of 5NCC classification

Under the National Construction Code (NCC) Volume Two, how are a detached house and its private garage classified?

AClass 1a for the house and the attached garage together
BClass 1b (house) and Class 10a (garage)
CClass 1a (house) and Class 10a (garage)
DClass 2 (house) and Class 10b (garage)
Answer & Source:

Class 1a is a single dwelling such as a detached house. Class 10a is a non-habitable building such as a private garage, carport or shed; Class 10b is for structures such as fences, retaining walls and pools.

Sample Question 2 of 5NCC compliance pathways

Under NCC Part A2, how can the Performance Requirements be satisfied?

AOnly by a Deemed-to-Satisfy Solution, because a Performance Solution needs ministerial approval
BBy a Performance Solution only, after a fire engineer certifies the whole design
CBy a Performance Solution, a Deemed-to-Satisfy Solution, or a combination of both
DBy a Deemed-to-Satisfy Solution or by a written declaration from the builder
Answer & Source:

NCC A2G1 says Performance Requirements are satisfied by a Performance Solution, a Deemed-to-Satisfy Solution, or a combination. Many people wrongly think Deemed-to-Satisfy is the only lawful route.

Sample Question 3 of 5NCC wet areas

Under NCC Housing Provisions 10.2.2, how high must shower area walls be waterproof, measured above the floor substrate?

ANot less than 1200 mm
BNot less than 1500 mm
CNot less than 150 mm above the shower rose
DNot less than 1800 mm
Answer & Source:

Clause 10.2.2(1) requires the walls of a shower area to be waterproof not less than 1800 mm above the floor substrate. The older "150 mm above the rose" idea is not in the NCC provision.

Sample Question 4 of 5NCC wet areas

For an enclosed shower with a level threshold (no hob), where must the vertical leg of the waterstop finish if a shower screen is installed (NCC Housing Provisions 10.2.17)?

AFlush with the finished floor level
BNot less than 25 mm above the finished floor level
CNot less than 5 mm above the finished floor level
DNot less than 50 mm above the finished floor level
Answer & Source:

Clause 10.2.17 says the waterstop must finish not less than 5 mm above the finished floor level where a shower screen is installed. Flush is the rule for unenclosed showers (10.2.18).

Sample Question 5 of 5NCC room heights

Under NCC Housing Provisions 10.3.1, what is the minimum ceiling height in a habitable room (excluding a kitchen)?

A2.4 m
B2.7 m
C2.2 m
D2.1 m in every room
Answer & Source:

Clause 10.3.1(1) sets 2.4 m for a habitable room excluding a kitchen. 2.1 m applies to kitchens, corridors, bathrooms and laundries.

Ready to practice all 145 questions?

Take unlimited practice tests with instant feedback or test yourself in the timed exam simulator.

Start Practice ModeTimed Simulator

More Trades tests

AUS40 questionsElectrical Safety LawElectrician licensing rules: VIC, QLD, NSWStart →AUS40 questionsPlumbing & Gasfitting RulesPlumbing Code, licensing and gas safety lawStart →AUS40 questionsRefrigerant Handling LicenceAustralian Refrigeration Council (ARC)Start →

All national tests →All Trades tests →

Sources & Independence

ExamRoo is an independent study aid and is not affiliated with any regulator or training provider. Each question is written from official public sources (legislation, handbooks, regulator guidance and training units) and checked against its source. Relevant authority: Building and Plumbing Commission (BPC), Victoria. Rules change, so always confirm the current requirements with them.

Spotted a mistake, or missing a test?

Every question names its source, and we fix wrong answers within days. Tell us which test and question, or which exam you need next.

Report a mistakeRequest a test